./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 2329fc70 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-?-2329fc7 [2023-02-14 03:07:04,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 03:07:04,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 03:07:04,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 03:07:04,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 03:07:04,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 03:07:04,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 03:07:04,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 03:07:04,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 03:07:04,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 03:07:04,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 03:07:04,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 03:07:04,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 03:07:04,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 03:07:04,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 03:07:04,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 03:07:04,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 03:07:04,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 03:07:04,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 03:07:04,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 03:07:04,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 03:07:04,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 03:07:04,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 03:07:04,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 03:07:04,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 03:07:04,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 03:07:04,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 03:07:04,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 03:07:04,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 03:07:04,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 03:07:04,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 03:07:04,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 03:07:04,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 03:07:04,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 03:07:04,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 03:07:04,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 03:07:04,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 03:07:04,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 03:07:04,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 03:07:04,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 03:07:04,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 03:07:04,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-14 03:07:04,486 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 03:07:04,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 03:07:04,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 03:07:04,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 03:07:04,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 03:07:04,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 03:07:04,496 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 03:07:04,497 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-14 03:07:04,497 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-14 03:07:04,497 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-14 03:07:04,498 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-14 03:07:04,498 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-14 03:07:04,498 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-14 03:07:04,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 03:07:04,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 03:07:04,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 03:07:04,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 03:07:04,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-14 03:07:04,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-14 03:07:04,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-14 03:07:04,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 03:07:04,500 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-14 03:07:04,500 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 03:07:04,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-14 03:07:04,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 03:07:04,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 03:07:04,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 03:07:04,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 03:07:04,502 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-14 03:07:04,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2023-02-14 03:07:04,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 03:07:04,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 03:07:04,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 03:07:04,728 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 03:07:04,729 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 03:07:04,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-14 03:07:05,915 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 03:07:06,073 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 03:07:06,074 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-14 03:07:06,078 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605a72432/c5955b10850e45fe8a885ee3fc56615b/FLAG851d9d2b4 [2023-02-14 03:07:06,088 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/605a72432/c5955b10850e45fe8a885ee3fc56615b [2023-02-14 03:07:06,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 03:07:06,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 03:07:06,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 03:07:06,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 03:07:06,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 03:07:06,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb69432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06, skipping insertion in model container [2023-02-14 03:07:06,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 03:07:06,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 03:07:06,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 03:07:06,215 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 03:07:06,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 03:07:06,236 INFO L208 MainTranslator]: Completed translation [2023-02-14 03:07:06,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06 WrapperNode [2023-02-14 03:07:06,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 03:07:06,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 03:07:06,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 03:07:06,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 03:07:06,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,261 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-02-14 03:07:06,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 03:07:06,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 03:07:06,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 03:07:06,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 03:07:06,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 03:07:06,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 03:07:06,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 03:07:06,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 03:07:06,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (1/1) ... [2023-02-14 03:07:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:06,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:06,325 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) [2023-02-14 03:07:06,335 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 [2023-02-14 03:07:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 03:07:06,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 03:07:06,423 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 03:07:06,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 03:07:06,528 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 03:07:06,534 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 03:07:06,534 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 03:07:06,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:07:06 BoogieIcfgContainer [2023-02-14 03:07:06,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 03:07:06,538 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-14 03:07:06,538 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-14 03:07:06,541 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-14 03:07:06,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 03:07:06,542 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.02 03:07:06" (1/3) ... [2023-02-14 03:07:06,543 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10ef657d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 03:07:06, skipping insertion in model container [2023-02-14 03:07:06,543 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 03:07:06,543 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:07:06" (2/3) ... [2023-02-14 03:07:06,544 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10ef657d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 03:07:06, skipping insertion in model container [2023-02-14 03:07:06,544 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 03:07:06,544 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:07:06" (3/3) ... [2023-02-14 03:07:06,545 INFO L332 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-14 03:07:06,636 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-14 03:07:06,649 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-14 03:07:06,649 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-14 03:07:06,649 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-14 03:07:06,649 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-14 03:07:06,650 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-14 03:07:06,650 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-14 03:07:06,650 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-14 03:07:06,653 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) [2023-02-14 03:07:06,670 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:06,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:07:06,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:07:06,686 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-14 03:07:06,700 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:07:06,700 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-14 03:07:06,701 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) [2023-02-14 03:07:06,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:06,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:07:06,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:07:06,703 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-14 03:07:06,703 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:07:06,709 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 5#L21true assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 8#L22-2true [2023-02-14 03:07:06,710 INFO L750 eck$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 [2023-02-14 03:07:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-14 03:07:06,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:06,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683388073] [2023-02-14 03:07:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:06,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:06,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:06,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 43923, now seen corresponding path program 1 times [2023-02-14 03:07:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:06,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133817792] [2023-02-14 03:07:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:06,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:06,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash 889513810, now seen corresponding path program 1 times [2023-02-14 03:07:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:06,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902451675] [2023-02-14 03:07:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:06,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:06,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:06,976 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:06,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:06,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:06,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:06,978 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:07:06,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:06,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:06,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:06,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2023-02-14 03:07:06,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:06,979 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:06,992 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:07,005 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:07,008 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:07,075 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:07,076 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:07:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,085 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) [2023-02-14 03:07:07,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:07,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:07,101 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 [2023-02-14 03:07:07,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:07,118 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: [] [2023-02-14 03:07:07,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:07,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,127 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) [2023-02-14 03:07:07,128 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 [2023-02-14 03:07:07,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:07,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:07,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:07,144 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: [] [2023-02-14 03:07:07,147 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 [2023-02-14 03:07:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,148 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) [2023-02-14 03:07:07,160 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 [2023-02-14 03:07:07,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:07,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:07,193 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 [2023-02-14 03:07:07,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,195 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) [2023-02-14 03:07:07,196 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 [2023-02-14 03:07:07,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:07:07,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:07,347 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:07:07,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:07,362 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:07,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:07,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:07,362 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:07,362 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:07:07,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:07,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:07,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2023-02-14 03:07:07,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:07,363 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:07,365 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:07,368 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:07,371 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:07,422 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:07,426 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:07:07,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,428 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) [2023-02-14 03:07:07,450 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 [2023-02-14 03:07:07,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:07,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:07,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:07,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:07,462 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:07,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:07,467 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 [2023-02-14 03:07:07,477 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:07,499 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 [2023-02-14 03:07:07,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,512 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) [2023-02-14 03:07:07,547 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 [2023-02-14 03:07:07,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:07,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:07,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:07,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:07,559 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:07,559 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:07,564 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 [2023-02-14 03:07:07,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:07,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:07,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,577 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) [2023-02-14 03:07:07,580 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 [2023-02-14 03:07:07,581 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 [2023-02-14 03:07:07,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:07,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:07,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:07,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:07,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:07,593 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:07,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:07,608 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:07,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:07,615 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-14 03:07:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,617 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) [2023-02-14 03:07:07,619 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 [2023-02-14 03:07:07,621 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 [2023-02-14 03:07:07,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:07,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:07,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:07,628 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-14 03:07:07,633 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-14 03:07:07,633 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-14 03:07:07,650 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:07,656 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 [2023-02-14 03:07:07,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,658 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) [2023-02-14 03:07:07,661 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 [2023-02-14 03:07:07,662 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 [2023-02-14 03:07:07,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:07,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:07,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:07,670 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-14 03:07:07,673 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-14 03:07:07,673 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-14 03:07:07,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:07,698 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 [2023-02-14 03:07:07,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,700 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) [2023-02-14 03:07:07,710 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 [2023-02-14 03:07:07,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:07,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:07,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:07,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:07,719 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-14 03:07:07,721 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-14 03:07:07,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:07,725 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 [2023-02-14 03:07:07,745 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:07:07,753 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2023-02-14 03:07:07,753 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-02-14 03:07:07,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:07,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:07,759 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) [2023-02-14 03:07:07,759 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 [2023-02-14 03:07:07,761 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:07:07,761 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:07:07,761 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:07:07,761 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 [] [2023-02-14 03:07:07,767 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 [2023-02-14 03:07:07,770 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:07:07,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:07,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:07,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:07,845 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 03:07:07,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:07,959 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 [2023-02-14 03:07:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:08,123 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 [2023-02-14 03:07:08,125 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) [2023-02-14 03:07:08,178 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. [2023-02-14 03:07:08,180 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 [2023-02-14 03:07:08,184 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) [2023-02-14 03:07:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2023-02-14 03:07:08,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 3 letters. [2023-02-14 03:07:08,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:08,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 3 letters. [2023-02-14 03:07:08,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:08,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2023-02-14 03:07:08,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:08,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2023-02-14 03:07:08,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:08,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 15 transitions. [2023-02-14 03:07:08,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-14 03:07:08,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-14 03:07:08,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2023-02-14 03:07:08,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:07:08,195 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-14 03:07:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2023-02-14 03:07:08,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-14 03:07:08,211 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) [2023-02-14 03:07:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2023-02-14 03:07:08,212 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-14 03:07:08,213 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-14 03:07:08,213 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-14 03:07:08,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2023-02-14 03:07:08,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:08,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:07:08,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:07:08,214 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-14 03:07:08,215 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-14 03:07:08,215 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 [2023-02-14 03:07:08,215 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 [2023-02-14 03:07:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash 28693995, now seen corresponding path program 1 times [2023-02-14 03:07:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:08,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056486052] [2023-02-14 03:07:08,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:08,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:08,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:08,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2023-02-14 03:07:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:08,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001069573] [2023-02-14 03:07:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:08,247 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:08,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash 889513868, now seen corresponding path program 2 times [2023-02-14 03:07:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:08,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124254534] [2023-02-14 03:07:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:08,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:08,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:08,290 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:08,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:08,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:08,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:08,291 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:07:08,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:08,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:08,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2023-02-14 03:07:08,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:08,292 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:08,293 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,296 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,299 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,302 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,345 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:08,345 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:07:08,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,349 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) [2023-02-14 03:07:08,359 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 [2023-02-14 03:07:08,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:08,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:08,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:08,382 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: [] [2023-02-14 03:07:08,389 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 [2023-02-14 03:07:08,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,390 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) [2023-02-14 03:07:08,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:08,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:08,409 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 [2023-02-14 03:07:08,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-02-14 03:07:08,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,418 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) [2023-02-14 03:07:08,420 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 [2023-02-14 03:07:08,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:07:08,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:08,457 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:08,457 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] [2023-02-14 03:07:08,464 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 [2023-02-14 03:07:08,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,466 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) [2023-02-14 03:07:08,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:08,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:08,488 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 [2023-02-14 03:07:08,497 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:08,497 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: [] [2023-02-14 03:07:08,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:08,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,505 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) [2023-02-14 03:07:08,508 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 [2023-02-14 03:07:08,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:08,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:08,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:08,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,548 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) [2023-02-14 03:07:08,550 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 [2023-02-14 03:07:08,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:07:08,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:08,724 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:07:08,727 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 [2023-02-14 03:07:08,727 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:08,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:08,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:08,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:08,728 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:07:08,728 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,728 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:08,728 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:08,728 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2023-02-14 03:07:08,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:08,729 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:08,730 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,738 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,741 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:08,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:08,785 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:07:08,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,787 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) [2023-02-14 03:07:08,797 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 [2023-02-14 03:07:08,799 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 [2023-02-14 03:07:08,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:08,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:08,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:08,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:08,811 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:08,811 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:08,832 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:08,839 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 [2023-02-14 03:07:08,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,841 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) [2023-02-14 03:07:08,851 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 [2023-02-14 03:07:08,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:08,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:08,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:08,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:08,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:08,861 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:08,861 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:08,863 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 [2023-02-14 03:07:08,881 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:08,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-02-14 03:07:08,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,888 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) [2023-02-14 03:07:08,898 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 [2023-02-14 03:07:08,898 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 [2023-02-14 03:07:08,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:08,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:08,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:08,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:08,910 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:08,910 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:08,925 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:08,935 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 [2023-02-14 03:07:08,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,938 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) [2023-02-14 03:07:08,942 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 [2023-02-14 03:07:08,943 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 [2023-02-14 03:07:08,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:08,952 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:08,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:08,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:08,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:08,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:08,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:08,968 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:07:08,973 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-14 03:07:08,973 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-14 03:07:08,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:08,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:08,977 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) [2023-02-14 03:07:08,980 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 [2023-02-14 03:07:08,981 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:07:08,981 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:07:08,981 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:07:08,981 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 [] [2023-02-14 03:07:08,987 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 [2023-02-14 03:07:08,988 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:07:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:09,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:09,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:09,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:07:09,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:09,015 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 [2023-02-14 03:07:09,015 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) [2023-02-14 03:07:09,024 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. [2023-02-14 03:07:09,024 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 [2023-02-14 03:07:09,025 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) [2023-02-14 03:07:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-02-14 03:07:09,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 1 letters. [2023-02-14 03:07:09,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:09,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 1 letters. [2023-02-14 03:07:09,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:09,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-14 03:07:09,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:09,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 29 transitions. [2023-02-14 03:07:09,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:09,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 20 transitions. [2023-02-14 03:07:09,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-14 03:07:09,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-14 03:07:09,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-02-14 03:07:09,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:07:09,028 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-02-14 03:07:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-02-14 03:07:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-14 03:07:09,030 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) [2023-02-14 03:07:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2023-02-14 03:07:09,030 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-14 03:07:09,030 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-14 03:07:09,030 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-14 03:07:09,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2023-02-14 03:07:09,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:09,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:07:09,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:07:09,032 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-02-14 03:07:09,033 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:07:09,033 INFO L748 eck$LassoCheckResult]: Stem: 165#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 166#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 163#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 164#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 169#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 172#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 161#L24-3 [2023-02-14 03:07:09,033 INFO L750 eck$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 [2023-02-14 03:07:09,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash 889513866, now seen corresponding path program 1 times [2023-02-14 03:07:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:09,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274346157] [2023-02-14 03:07:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:09,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:09,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 2 times [2023-02-14 03:07:09,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:09,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485175692] [2023-02-14 03:07:09,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:09,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash -440607912, now seen corresponding path program 1 times [2023-02-14 03:07:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:09,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556563908] [2023-02-14 03:07:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:09,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:09,100 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:09,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:09,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:09,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:09,101 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:07:09,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:09,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:09,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2023-02-14 03:07:09,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:09,101 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:09,102 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:09,110 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:09,117 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:09,153 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:09,153 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:07:09,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,154 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) [2023-02-14 03:07:09,161 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 [2023-02-14 03:07:09,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:09,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:09,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:09,193 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: [] [2023-02-14 03:07:09,200 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 [2023-02-14 03:07:09,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,202 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) [2023-02-14 03:07:09,204 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 [2023-02-14 03:07:09,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:09,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:09,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:09,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,245 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) [2023-02-14 03:07:09,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:07:09,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:09,267 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 [2023-02-14 03:07:09,382 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:07:09,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-02-14 03:07:09,386 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:09,386 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:09,386 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:09,386 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:09,386 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:07:09,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,387 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:09,387 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:09,387 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2023-02-14 03:07:09,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:09,387 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:09,388 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:09,394 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:09,402 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:09,438 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:09,438 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:07:09,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,440 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) [2023-02-14 03:07:09,454 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 [2023-02-14 03:07:09,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:09,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:09,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:09,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:09,465 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:09,465 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:09,468 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 [2023-02-14 03:07:09,473 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:09,477 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 [2023-02-14 03:07:09,483 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 [2023-02-14 03:07:09,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,489 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) [2023-02-14 03:07:09,492 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 [2023-02-14 03:07:09,493 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 [2023-02-14 03:07:09,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:09,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:09,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:09,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:09,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:09,503 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:09,503 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:09,516 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:09,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-02-14 03:07:09,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,521 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) [2023-02-14 03:07:09,521 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 [2023-02-14 03:07:09,562 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 [2023-02-14 03:07:09,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:09,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:09,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:09,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:09,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:09,578 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:09,589 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:09,595 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 [2023-02-14 03:07:09,595 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-14 03:07:09,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,597 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) [2023-02-14 03:07:09,600 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 [2023-02-14 03:07:09,602 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 [2023-02-14 03:07:09,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:09,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:09,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:09,610 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-14 03:07:09,617 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-14 03:07:09,617 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-14 03:07:09,641 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:09,648 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 [2023-02-14 03:07:09,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,650 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) [2023-02-14 03:07:09,653 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 [2023-02-14 03:07:09,654 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 [2023-02-14 03:07:09,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:09,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:09,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:09,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:09,663 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-14 03:07:09,665 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-14 03:07:09,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:09,681 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:07:09,696 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-14 03:07:09,696 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-02-14 03:07:09,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:09,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:09,701 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) [2023-02-14 03:07:09,704 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 [2023-02-14 03:07:09,705 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:07:09,705 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:07:09,705 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:07:09,705 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 [] [2023-02-14 03:07:09,712 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 [2023-02-14 03:07:09,713 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:07:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:09,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:09,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:09,753 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 03:07:09,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:09,882 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 [2023-02-14 03:07:09,882 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) [2023-02-14 03:07:09,911 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. [2023-02-14 03:07:09,911 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 [2023-02-14 03:07:09,913 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) [2023-02-14 03:07:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2023-02-14 03:07:09,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2023-02-14 03:07:09,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:09,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-14 03:07:09,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:09,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 6 letters. [2023-02-14 03:07:09,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:09,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 46 transitions. [2023-02-14 03:07:09,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:09,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 23 states and 34 transitions. [2023-02-14 03:07:09,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-14 03:07:09,925 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-14 03:07:09,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 34 transitions. [2023-02-14 03:07:09,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:07:09,925 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2023-02-14 03:07:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 34 transitions. [2023-02-14 03:07:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-02-14 03:07:09,928 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) [2023-02-14 03:07:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2023-02-14 03:07:09,929 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-02-14 03:07:09,929 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-02-14 03:07:09,929 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-14 03:07:09,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2023-02-14 03:07:09,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:07:09,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:07:09,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:07:09,931 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-14 03:07:09,931 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:07:09,931 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 [2023-02-14 03:07:09,932 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 [2023-02-14 03:07:09,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash -442288422, now seen corresponding path program 2 times [2023-02-14 03:07:09,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:09,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267903587] [2023-02-14 03:07:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:09,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,950 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:09,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,964 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 3 times [2023-02-14 03:07:09,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:09,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752754248] [2023-02-14 03:07:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:09,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:09,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:09,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash 745310728, now seen corresponding path program 3 times [2023-02-14 03:07:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:09,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784191531] [2023-02-14 03:07:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:10,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 03:07:10,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784191531] [2023-02-14 03:07:10,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784191531] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 03:07:10,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284754295] [2023-02-14 03:07:10,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 03:07:10,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 03:07:10,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,115 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) [2023-02-14 03:07:10,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-02-14 03:07:10,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-14 03:07:10,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 03:07:10,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 03:07:10,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:10,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 03:07:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:10,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284754295] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 03:07:10,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 03:07:10,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-02-14 03:07:10,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550217164] [2023-02-14 03:07:10,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 03:07:10,279 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:10,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:10,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:10,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:10,279 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:07:10,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:10,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:10,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2023-02-14 03:07:10,280 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:10,280 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:10,281 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:10,284 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:10,297 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:10,333 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:10,334 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:07:10,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,337 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) [2023-02-14 03:07:10,338 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 [2023-02-14 03:07:10,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:10,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:10,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:10,365 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: [] [2023-02-14 03:07:10,372 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 [2023-02-14 03:07:10,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,374 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) [2023-02-14 03:07:10,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:10,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:10,391 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 [2023-02-14 03:07:10,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2023-02-14 03:07:10,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,404 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) [2023-02-14 03:07:10,406 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 [2023-02-14 03:07:10,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:07:10,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:10,548 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:07:10,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-02-14 03:07:10,553 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:10,553 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:10,553 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:10,553 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:10,553 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:07:10,553 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,553 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:10,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:10,553 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2023-02-14 03:07:10,553 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:10,553 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:10,554 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:10,560 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:10,562 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:10,610 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:10,613 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:07:10,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,615 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) [2023-02-14 03:07:10,624 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 [2023-02-14 03:07:10,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:10,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:10,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:10,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:10,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:10,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:10,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:10,636 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 [2023-02-14 03:07:10,645 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:10,651 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 [2023-02-14 03:07:10,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,653 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) [2023-02-14 03:07:10,661 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 [2023-02-14 03:07:10,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:10,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:10,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:10,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:10,670 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:10,670 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:10,673 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 [2023-02-14 03:07:10,697 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:10,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:10,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,705 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) [2023-02-14 03:07:10,710 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 [2023-02-14 03:07:10,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:10,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:10,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:10,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:10,720 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 [2023-02-14 03:07:10,721 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:10,721 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:10,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:10,749 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:10,755 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 [2023-02-14 03:07:10,756 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-14 03:07:10,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,757 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) [2023-02-14 03:07:10,763 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 [2023-02-14 03:07:10,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:10,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:10,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:10,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:10,772 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-14 03:07:10,773 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 [2023-02-14 03:07:10,775 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-14 03:07:10,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:10,797 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:07:10,802 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-14 03:07:10,803 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-02-14 03:07:10,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:10,804 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) [2023-02-14 03:07:10,807 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 [2023-02-14 03:07:10,808 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:07:10,808 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:07:10,808 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:07:10,808 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 [] [2023-02-14 03:07:10,815 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 [2023-02-14 03:07:10,816 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:07:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:10,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:10,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:10,853 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 03:07:10,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:10,942 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 [2023-02-14 03:07:10,942 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) [2023-02-14 03:07:10,963 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. [2023-02-14 03:07:10,963 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 [2023-02-14 03:07:10,964 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) [2023-02-14 03:07:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-02-14 03:07:10,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-14 03:07:10,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:10,965 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 03:07:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:10,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:10,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:10,996 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 03:07:10,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:11,081 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 [2023-02-14 03:07:11,081 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) [2023-02-14 03:07:11,102 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. [2023-02-14 03:07:11,103 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 [2023-02-14 03:07:11,105 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) [2023-02-14 03:07:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-14 03:07:11,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-14 03:07:11,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:11,106 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 03:07:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:11,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:11,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:11,141 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 03:07:11,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:11,238 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 [2023-02-14 03:07:11,238 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) [2023-02-14 03:07:11,260 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. [2023-02-14 03:07:11,260 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 [2023-02-14 03:07:11,261 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) [2023-02-14 03:07:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2023-02-14 03:07:11,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-14 03:07:11,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:11,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 12 letters. Loop has 3 letters. [2023-02-14 03:07:11,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:11,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 6 letters. [2023-02-14 03:07:11,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:11,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 53 transitions. [2023-02-14 03:07:11,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-14 03:07:11,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 25 states and 35 transitions. [2023-02-14 03:07:11,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-14 03:07:11,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-02-14 03:07:11,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 35 transitions. [2023-02-14 03:07:11,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:07:11,265 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 35 transitions. [2023-02-14 03:07:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 35 transitions. [2023-02-14 03:07:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2023-02-14 03:07:11,266 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) [2023-02-14 03:07:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2023-02-14 03:07:11,267 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2023-02-14 03:07:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 03:07:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 03:07:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-14 03:07:11,270 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) [2023-02-14 03:07:11,291 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 [2023-02-14 03:07:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 03:07:11,375 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2023-02-14 03:07:11,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2023-02-14 03:07:11,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-14 03:07:11,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 29 transitions. [2023-02-14 03:07:11,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-14 03:07:11,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-14 03:07:11,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2023-02-14 03:07:11,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:07:11,378 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-02-14 03:07:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2023-02-14 03:07:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-02-14 03:07:11,381 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) [2023-02-14 03:07:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2023-02-14 03:07:11,382 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-02-14 03:07:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 03:07:11,385 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-02-14 03:07:11,385 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-14 03:07:11,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2023-02-14 03:07:11,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-14 03:07:11,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:07:11,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:07:11,387 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-14 03:07:11,387 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-14 03:07:11,388 INFO L748 eck$LassoCheckResult]: Stem: 649#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 650#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 647#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 648#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 643#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 644#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 657#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 656#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 662#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 659#L24-2 [2023-02-14 03:07:11,388 INFO L750 eck$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 [2023-02-14 03:07:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 4 times [2023-02-14 03:07:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:11,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331459159] [2023-02-14 03:07:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:11,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:11,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 2 times [2023-02-14 03:07:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:11,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277097514] [2023-02-14 03:07:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:11,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:11,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:11,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash -773943299, now seen corresponding path program 5 times [2023-02-14 03:07:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:11,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101749861] [2023-02-14 03:07:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:11,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:11,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:11,436 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:11,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:11,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:11,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:11,436 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:07:11,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:11,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:11,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2023-02-14 03:07:11,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:11,437 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:11,438 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,440 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,443 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,451 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,486 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:11,486 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:07:11,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,488 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) [2023-02-14 03:07:11,490 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 [2023-02-14 03:07:11,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:11,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:11,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:11,504 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: [] [2023-02-14 03:07:11,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-02-14 03:07:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,509 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) [2023-02-14 03:07:11,511 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 [2023-02-14 03:07:11,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:11,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:11,528 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:11,528 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: [] [2023-02-14 03:07:11,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:11,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,537 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) [2023-02-14 03:07:11,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:11,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:11,557 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 [2023-02-14 03:07:11,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-02-14 03:07:11,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,567 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) [2023-02-14 03:07:11,576 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 [2023-02-14 03:07:11,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:07:11,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:11,731 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:07:11,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-02-14 03:07:11,735 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:11,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:11,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:11,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:11,735 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:07:11,736 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,736 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:11,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:11,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2023-02-14 03:07:11,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:11,736 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:11,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,742 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,749 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:11,784 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:11,785 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:07:11,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,786 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) [2023-02-14 03:07:11,789 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 [2023-02-14 03:07:11,791 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 [2023-02-14 03:07:11,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:11,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:11,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:11,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:11,801 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:11,801 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:11,816 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:11,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:11,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,821 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) [2023-02-14 03:07:11,829 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 [2023-02-14 03:07:11,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:11,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:11,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:11,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:11,838 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:11,838 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:11,841 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 [2023-02-14 03:07:11,857 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:11,860 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 [2023-02-14 03:07:11,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,861 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) [2023-02-14 03:07:11,869 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 [2023-02-14 03:07:11,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:11,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:11,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:11,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:11,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:11,878 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:11,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:11,880 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 [2023-02-14 03:07:11,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:07:11,904 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-14 03:07:11,904 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-14 03:07:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:11,905 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) [2023-02-14 03:07:11,908 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 [2023-02-14 03:07:11,909 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:07:11,909 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:07:11,909 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:07:11,909 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 [] [2023-02-14 03:07:11,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:11,913 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:07:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:11,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:11,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:11,944 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:07:11,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:11,945 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 [2023-02-14 03:07:11,945 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) [2023-02-14 03:07:11,953 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. [2023-02-14 03:07:11,953 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 [2023-02-14 03:07:11,954 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) [2023-02-14 03:07:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-14 03:07:11,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-14 03:07:11,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:11,955 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 03:07:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:11,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:11,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:11,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:07:11,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:11,984 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 [2023-02-14 03:07:11,984 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) [2023-02-14 03:07:11,990 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. [2023-02-14 03:07:11,991 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 [2023-02-14 03:07:11,991 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) [2023-02-14 03:07:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-14 03:07:11,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-14 03:07:11,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:11,992 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 03:07:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:12,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:12,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:12,022 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:07:12,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:12,023 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 [2023-02-14 03:07:12,023 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) [2023-02-14 03:07:12,029 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. [2023-02-14 03:07:12,030 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 [2023-02-14 03:07:12,031 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) [2023-02-14 03:07:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-14 03:07:12,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-14 03:07:12,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:12,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2023-02-14 03:07:12,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:12,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2023-02-14 03:07:12,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:12,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2023-02-14 03:07:12,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-14 03:07:12,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 30 transitions. [2023-02-14 03:07:12,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-14 03:07:12,033 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-14 03:07:12,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 30 transitions. [2023-02-14 03:07:12,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:07:12,034 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-14 03:07:12,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 30 transitions. [2023-02-14 03:07:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2023-02-14 03:07:12,035 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) [2023-02-14 03:07:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2023-02-14 03:07:12,035 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-02-14 03:07:12,035 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-02-14 03:07:12,036 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-14 03:07:12,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2023-02-14 03:07:12,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-14 03:07:12,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:07:12,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:07:12,037 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-14 03:07:12,037 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-14 03:07:12,037 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 [2023-02-14 03:07:12,037 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 [2023-02-14 03:07:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:12,038 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 6 times [2023-02-14 03:07:12,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:12,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764795654] [2023-02-14 03:07:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:12,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:12,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1575536, now seen corresponding path program 1 times [2023-02-14 03:07:12,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166885347] [2023-02-14 03:07:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:12,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:12,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:12,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1160408759, now seen corresponding path program 7 times [2023-02-14 03:07:12,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:07:12,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081478956] [2023-02-14 03:07:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:07:12,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:07:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:12,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:07:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:07:12,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:07:12,106 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:12,106 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:12,106 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:12,107 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:12,107 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:07:12,107 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,107 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:12,107 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:12,107 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2023-02-14 03:07:12,107 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:12,107 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:12,108 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:12,110 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:12,113 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:12,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:12,164 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:07:12,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:12,167 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) [2023-02-14 03:07:12,167 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 [2023-02-14 03:07:12,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:12,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:12,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:12,179 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: [] [2023-02-14 03:07:12,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:12,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:12,184 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) [2023-02-14 03:07:12,185 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 [2023-02-14 03:07:12,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:12,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:12,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:07:12,211 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: [] [2023-02-14 03:07:12,215 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 [2023-02-14 03:07:12,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:12,216 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) [2023-02-14 03:07:12,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:07:12,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:12,229 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 [2023-02-14 03:07:12,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:12,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:12,252 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) [2023-02-14 03:07:12,256 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 [2023-02-14 03:07:12,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:07:12,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:07:12,385 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:07:12,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2023-02-14 03:07:12,390 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:07:12,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:07:12,390 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:07:12,390 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:07:12,390 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:07:12,390 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:07:12,390 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:07:12,390 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2023-02-14 03:07:12,390 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:07:12,390 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:07:12,391 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:12,398 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:12,408 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:07:12,444 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:07:12,444 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:07:12,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:12,446 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) [2023-02-14 03:07:12,447 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 [2023-02-14 03:07:12,460 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 [2023-02-14 03:07:12,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:12,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:12,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:12,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:12,468 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:07:12,468 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:07:12,471 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:12,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2023-02-14 03:07:12,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:12,475 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) [2023-02-14 03:07:12,476 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 [2023-02-14 03:07:12,478 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 [2023-02-14 03:07:12,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:12,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:12,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:12,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:12,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:12,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:12,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:12,524 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:07:12,528 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 03:07:12,528 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-14 03:07:12,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:12,533 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) [2023-02-14 03:07:12,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:07:12,537 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:07:12,537 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:07:12,537 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 [] [2023-02-14 03:07:12,540 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 [2023-02-14 03:07:12,541 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 [2023-02-14 03:07:12,542 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:07:12,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:12,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:12,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 03:07:12,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:12,587 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 [2023-02-14 03:07:12,587 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) [2023-02-14 03:07:12,607 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. [2023-02-14 03:07:12,608 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 [2023-02-14 03:07:12,608 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) [2023-02-14 03:07:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-14 03:07:12,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-02-14 03:07:12,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:12,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2023-02-14 03:07:12,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:12,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2023-02-14 03:07:12,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:12,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2023-02-14 03:07:12,610 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 03:07:12,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2023-02-14 03:07:12,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-14 03:07:12,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-14 03:07:12,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-14 03:07:12,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-14 03:07:12,611 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 03:07:12,611 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 03:07:12,611 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 03:07:12,612 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-02-14 03:07:12,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-14 03:07:12,613 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 03:07:12,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-14 03:07:12,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.02 03:07:12 BoogieIcfgContainer [2023-02-14 03:07:12,620 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-14 03:07:12,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 03:07:12,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 03:07:12,621 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 03:07:12,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:07:06" (3/4) ... [2023-02-14 03:07:12,623 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-14 03:07:12,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 03:07:12,624 INFO L158 Benchmark]: Toolchain (without parser) took 6532.60ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 76.0MB in the beginning and 78.7MB in the end (delta: -2.8MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2023-02-14 03:07:12,624 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 03:07:12,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.59ms. Allocated memory is still 119.5MB. Free memory was 76.0MB in the beginning and 66.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 03:07:12,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.20ms. Allocated memory is still 119.5MB. Free memory was 66.7MB in the beginning and 65.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 03:07:12,625 INFO L158 Benchmark]: Boogie Preprocessor took 21.70ms. Allocated memory is still 119.5MB. Free memory was 65.1MB in the beginning and 64.0MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-14 03:07:12,627 INFO L158 Benchmark]: RCFGBuilder took 250.38ms. Allocated memory is still 119.5MB. Free memory was 64.0MB in the beginning and 55.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 03:07:12,628 INFO L158 Benchmark]: BuchiAutomizer took 6082.40ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 55.3MB in the beginning and 79.8MB in the end (delta: -24.5MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2023-02-14 03:07:12,628 INFO L158 Benchmark]: Witness Printer took 2.74ms. Allocated memory is still 184.5MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 03:07:12,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.59ms. Allocated memory is still 119.5MB. Free memory was 76.0MB in the beginning and 66.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.20ms. Allocated memory is still 119.5MB. Free memory was 66.7MB in the beginning and 65.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.70ms. Allocated memory is still 119.5MB. Free memory was 65.1MB in the beginning and 64.0MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 250.38ms. Allocated memory is still 119.5MB. Free memory was 64.0MB in the beginning and 55.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6082.40ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 55.3MB in the beginning and 79.8MB in the end (delta: -24.5MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Witness Printer took 2.74ms. Allocated memory is still 184.5MB. Free memory is still 78.7MB. 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 5.9s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.4s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. 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 hnf93 smp100 dnf100 smp100 tf108 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms 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! [2023-02-14 03:07:12,637 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 [2023-02-14 03:07:12,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2023-02-14 03:07:13,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-02-14 03:07:13,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE