./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Piecewise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c 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/Piecewise.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 ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:05:44,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:05:44,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:05:44,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:05:44,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:05:44,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:05:44,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:05:44,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:05:44,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:05:44,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:05:44,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:05:44,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:05:44,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:05:44,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:05:44,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:05:44,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:05:44,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:05:44,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:05:44,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:05:44,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:05:44,540 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:05:44,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:05:44,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:05:44,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:05:44,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:05:44,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:05:44,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:05:44,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:05:44,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:05:44,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:05:44,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:05:44,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:05:44,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:05:44,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:05:44,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:05:44,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:05:44,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:05:44,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:05:44,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:05:44,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:05:44,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:05:44,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:05:44,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:05:44,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:05:44,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:05:44,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:05:44,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:05:44,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:05:44,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:05:44,615 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:05:44,615 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:05:44,615 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:05:44,616 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:05:44,616 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:05:44,616 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:05:44,616 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:05:44,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:05:44,617 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:05:44,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:05:44,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:05:44,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:05:44,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:05:44,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:05:44,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:05:44,618 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:05:44,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:05:44,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:05:44,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:05:44,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:05:44,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:05:44,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:05:44,620 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:05:44,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 [2022-07-13 03:05:44,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:05:44,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:05:44,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:05:44,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:05:44,894 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:05:44,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Piecewise.c [2022-07-13 03:05:44,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68dab94e/4ea84a5358d9424d9dc048433405fc62/FLAG8cf64e304 [2022-07-13 03:05:45,311 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:05:45,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Piecewise.c [2022-07-13 03:05:45,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68dab94e/4ea84a5358d9424d9dc048433405fc62/FLAG8cf64e304 [2022-07-13 03:05:45,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68dab94e/4ea84a5358d9424d9dc048433405fc62 [2022-07-13 03:05:45,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:05:45,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:05:45,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:05:45,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:05:45,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:05:45,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d42b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45, skipping insertion in model container [2022-07-13 03:05:45,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:05:45,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:05:45,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:05:45,479 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:05:45,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:05:45,501 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:05:45,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45 WrapperNode [2022-07-13 03:05:45,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:05:45,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:05:45,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:05:45,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:05:45,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,529 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-07-13 03:05:45,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:05:45,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:05:45,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:05:45,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:05:45,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:05:45,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:05:45,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:05:45,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:05:45,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (1/1) ... [2022-07-13 03:05:45,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:45,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:45,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-13 03:05:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:05:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:05:45,662 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:05:45,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:05:45,740 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:05:45,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:05:45,747 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 03:05:45,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:05:45 BoogieIcfgContainer [2022-07-13 03:05:45,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:05:45,751 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:05:45,751 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:05:45,753 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:05:45,753 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:05:45,753 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:05:45" (1/3) ... [2022-07-13 03:05:45,754 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10a9c106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:05:45, skipping insertion in model container [2022-07-13 03:05:45,755 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:05:45,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:05:45" (2/3) ... [2022-07-13 03:05:45,755 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10a9c106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:05:45, skipping insertion in model container [2022-07-13 03:05:45,755 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:05:45,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:05:45" (3/3) ... [2022-07-13 03:05:45,756 INFO L354 chiAutomizerObserver]: Analyzing ICFG Piecewise.c [2022-07-13 03:05:45,800 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:05:45,800 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:05:45,800 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:05:45,800 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:05:45,800 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:05:45,800 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:05:45,800 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:05:45,801 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:05:45,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:45,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:45,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:45,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:45,818 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:05:45,818 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:05:45,818 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:05:45,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:45,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:45,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:45,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:45,819 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:05:45,819 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:05:45,823 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L26-2true [2022-07-13 03:05:45,823 INFO L754 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 5#L23true assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L26-2true [2022-07-13 03:05:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:05:45,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:45,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242448933] [2022-07-13 03:05:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:45,882 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:45,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-07-13 03:05:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195591625] [2022-07-13 03:05:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:45,904 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:45,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:45,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:45,910 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-13 03:05:45,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:45,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728335085] [2022-07-13 03:05:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:45,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:45,915 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:45,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:45,979 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:45,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:45,980 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:45,980 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:45,980 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:05:45,980 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:45,980 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:45,980 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:45,980 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2022-07-13 03:05:45,980 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:45,980 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:46,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,111 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:46,111 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:05:46,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-13 03:05:46,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:46,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:46,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:46,138 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: [] [2022-07-13 03:05:46,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-13 03:05:46,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-13 03:05:46,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:46,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:46,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:46,173 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: [] [2022-07-13 03:05:46,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-07-13 03:05:46,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-13 03:05:46,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:46,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:46,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:46,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,251 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:05:46,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:46,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-13 03:05:46,290 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:05:46,296 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 [2022-07-13 03:05:46,297 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:46,297 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:46,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:46,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:46,297 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:05:46,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:46,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:46,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2022-07-13 03:05:46,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:46,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:46,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,373 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:46,377 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:05:46,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-13 03:05:46,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:46,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:46,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:46,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:46,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:46,395 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:46,395 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:46,407 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:46,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:46,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,427 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-13 03:05:46,433 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:46,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:46,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:46,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:46,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:46,442 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:46,442 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:46,451 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:46,468 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 [2022-07-13 03:05:46,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-13 03:05:46,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:46,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:46,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:05:46,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:46,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:46,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:46,493 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:05:46,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:05:46,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:05:46,519 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:05:46,519 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:05:46,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:46,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-13 03:05:46,524 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:05:46,524 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:05:46,524 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:05:46,525 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-07-13 03:05:46,542 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 [2022-07-13 03:05:46,544 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:05:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:46,587 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:46,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:46,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:46,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:46,634 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:05:46,634 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:46,676 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 38 states and 49 transitions. Complement of second has 8 states. [2022-07-13 03:05:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-13 03:05:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-07-13 03:05:46,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-13 03:05:46,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:46,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-13 03:05:46,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:46,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-13 03:05:46,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:46,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 49 transitions. [2022-07-13 03:05:46,691 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:05:46,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2022-07-13 03:05:46,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-13 03:05:46,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-13 03:05:46,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-07-13 03:05:46,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:05:46,696 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-07-13 03:05:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-07-13 03:05:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-07-13 03:05:46,711 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) [2022-07-13 03:05:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-07-13 03:05:46,712 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-13 03:05:46,712 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-13 03:05:46,712 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:05:46,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-07-13 03:05:46,713 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:05:46,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:46,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:46,714 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 03:05:46,714 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:05:46,714 INFO L752 eck$LassoCheckResult]: Stem: 87#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 88#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_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 98#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 90#L23 [2022-07-13 03:05:46,714 INFO L754 eck$LassoCheckResult]: Loop: 90#L23 assume !(main_~q~0#1 < main_~p~0#1); 93#L26 assume !(main_~p~0#1 < main_~q~0#1); 89#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 90#L23 [2022-07-13 03:05:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-13 03:05:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:46,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472504188] [2022-07-13 03:05:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,725 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2022-07-13 03:05:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:46,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991565072] [2022-07-13 03:05:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:46,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:46,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:46,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:05:46,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991565072] [2022-07-13 03:05:46,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991565072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:05:46,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:05:46,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 03:05:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843637129] [2022-07-13 03:05:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:05:46,814 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 03:05:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:05:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 03:05:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 03:05:46,816 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:05:46,827 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-07-13 03:05:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 03:05:46,828 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2022-07-13 03:05:46,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:46,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2022-07-13 03:05:46,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-13 03:05:46,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-13 03:05:46,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-07-13 03:05:46,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:05:46,829 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:05:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-07-13 03:05:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-07-13 03:05:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2022-07-13 03:05:46,829 INFO L392 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-07-13 03:05:46,829 INFO L374 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-07-13 03:05:46,830 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:05:46,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2022-07-13 03:05:46,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:46,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:46,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:46,830 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:05:46,830 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:05:46,830 INFO L752 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 129#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 126#L23 assume !(main_~q~0#1 < main_~p~0#1); 128#L26 [2022-07-13 03:05:46,830 INFO L754 eck$LassoCheckResult]: Loop: 128#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 123#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 124#L23 assume !(main_~q~0#1 < main_~p~0#1); 128#L26 [2022-07-13 03:05:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:46,831 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-13 03:05:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:46,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616542931] [2022-07-13 03:05:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,834 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2022-07-13 03:05:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:46,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445096410] [2022-07-13 03:05:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,840 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:46,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2022-07-13 03:05:46,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:46,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930700385] [2022-07-13 03:05:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:46,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,847 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:46,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:46,892 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:46,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:46,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:46,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:46,892 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:05:46,892 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,892 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:46,892 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:46,892 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2022-07-13 03:05:46,892 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:46,892 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:46,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:46,963 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:46,963 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:05:46,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:46,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:46,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:47,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:47,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:47,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-13 03:05:47,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:47,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:05:47,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:47,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,076 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:47,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-13 03:05:47,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:47,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:47,105 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:47,105 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:05:47,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-07-13 03:05:47,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:47,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-13 03:05:47,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:47,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:47,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-13 03:05:47,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,153 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:47,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-13 03:05:47,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:05:47,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:47,257 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:05:47,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:47,263 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:47,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:47,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:47,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:47,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:05:47,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:47,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:47,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2022-07-13 03:05:47,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:47,263 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:47,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,330 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:47,331 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:05:47,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,332 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) [2022-07-13 03:05:47,349 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 [2022-07-13 03:05:47,350 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:47,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:47,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:47,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:47,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:47,359 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:47,359 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:47,385 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:47,400 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 [2022-07-13 03:05:47,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,402 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) [2022-07-13 03:05:47,404 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 [2022-07-13 03:05:47,405 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:47,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:47,411 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:05:47,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:47,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:47,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:47,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:05:47,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:05:47,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:05:47,426 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:05:47,426 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:05:47,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,427 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) [2022-07-13 03:05:47,428 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 [2022-07-13 03:05:47,429 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:05:47,429 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:05:47,429 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:05:47,429 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-07-13 03:05:47,445 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 [2022-07-13 03:05:47,446 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:05:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:47,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:47,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:47,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:47,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:47,516 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-13 03:05:47,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:47,535 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 17 states and 21 transitions. Complement of second has 7 states. [2022-07-13 03:05:47,536 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 [2022-07-13 03:05:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-13 03:05:47,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-13 03:05:47,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:47,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:05:47,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:47,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-13 03:05:47,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:47,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2022-07-13 03:05:47,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:47,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 18 transitions. [2022-07-13 03:05:47,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-13 03:05:47,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-07-13 03:05:47,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2022-07-13 03:05:47,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:05:47,541 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2022-07-13 03:05:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2022-07-13 03:05:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-07-13 03:05:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-07-13 03:05:47,544 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-13 03:05:47,544 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-13 03:05:47,544 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:05:47,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2022-07-13 03:05:47,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:47,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:47,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:47,546 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-07-13 03:05:47,546 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:05:47,546 INFO L752 eck$LassoCheckResult]: Stem: 193#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 194#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 203#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 198#L23 assume !(main_~q~0#1 < main_~p~0#1); 205#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 202#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 204#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 195#L26-2 [2022-07-13 03:05:47,547 INFO L754 eck$LassoCheckResult]: Loop: 195#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 196#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 195#L26-2 [2022-07-13 03:05:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2022-07-13 03:05:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:47,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711364505] [2022-07-13 03:05:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:47,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,552 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2022-07-13 03:05:47,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:47,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402104119] [2022-07-13 03:05:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:47,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,559 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 642700593, now seen corresponding path program 2 times [2022-07-13 03:05:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:47,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579413802] [2022-07-13 03:05:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:47,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,572 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:47,597 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:47,597 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:47,598 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:47,598 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:47,598 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:05:47,598 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,598 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:47,598 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:47,598 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2022-07-13 03:05:47,598 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:47,598 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:47,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,634 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:47,634 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:05:47,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,635 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) [2022-07-13 03:05:47,636 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 [2022-07-13 03:05:47,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:47,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:47,659 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:47,659 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: [] [2022-07-13 03:05:47,678 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 [2022-07-13 03:05:47,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,679 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) [2022-07-13 03:05:47,680 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 [2022-07-13 03:05:47,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:47,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:47,706 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 [2022-07-13 03:05:47,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,707 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) [2022-07-13 03:05:47,708 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 [2022-07-13 03:05:47,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:05:47,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:47,736 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:05:47,739 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 [2022-07-13 03:05:47,740 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:47,740 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:47,740 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:47,740 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:47,740 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:05:47,740 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,740 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:47,740 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:47,740 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2022-07-13 03:05:47,740 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:47,740 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:47,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,780 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:47,781 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:05:47,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,782 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) [2022-07-13 03:05:47,798 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 [2022-07-13 03:05:47,799 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 [2022-07-13 03:05:47,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:47,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:05:47,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:47,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:47,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:47,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:05:47,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:05:47,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:05:47,834 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:05:47,834 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:05:47,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:47,868 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) [2022-07-13 03:05:47,870 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 [2022-07-13 03:05:47,870 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:05:47,870 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:05:47,870 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:05:47,870 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-07-13 03:05:47,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:47,887 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:05:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:47,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:47,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:47,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:47,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:47,920 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:05:47,920 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:47,929 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 35 transitions. Complement of second has 5 states. [2022-07-13 03:05:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:05:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-13 03:05:47,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-13 03:05:47,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:47,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-13 03:05:47,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:47,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2022-07-13 03:05:47,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:47,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2022-07-13 03:05:47,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:47,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 24 states and 31 transitions. [2022-07-13 03:05:47,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-07-13 03:05:47,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-07-13 03:05:47,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2022-07-13 03:05:47,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:05:47,933 INFO L369 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-07-13 03:05:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2022-07-13 03:05:47,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-07-13 03:05:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-07-13 03:05:47,935 INFO L392 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-07-13 03:05:47,935 INFO L374 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-07-13 03:05:47,935 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 03:05:47,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2022-07-13 03:05:47,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:05:47,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:47,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:47,936 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1] [2022-07-13 03:05:47,936 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:05:47,936 INFO L752 eck$LassoCheckResult]: Stem: 282#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 283#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 292#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 301#L23 assume !(main_~q~0#1 < main_~p~0#1); 299#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 298#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 293#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 284#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 286#L23 assume !(main_~q~0#1 < main_~p~0#1); 288#L26 [2022-07-13 03:05:47,936 INFO L754 eck$LassoCheckResult]: Loop: 288#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 296#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 297#L23 assume !(main_~q~0#1 < main_~p~0#1); 288#L26 [2022-07-13 03:05:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash 642700595, now seen corresponding path program 3 times [2022-07-13 03:05:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:47,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567943376] [2022-07-13 03:05:47,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:47,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,942 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:47,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 2 times [2022-07-13 03:05:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:47,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956867637] [2022-07-13 03:05:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,950 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:47,953 INFO L85 PathProgramCache]: Analyzing trace with hash -270761307, now seen corresponding path program 4 times [2022-07-13 03:05:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:47,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299463810] [2022-07-13 03:05:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:47,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,959 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:47,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:47,991 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:47,992 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:47,992 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:47,992 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:47,992 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:05:47,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:47,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:47,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:47,992 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2022-07-13 03:05:47,992 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:47,992 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:47,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:47,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:48,059 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 [2022-07-13 03:05:48,095 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 [2022-07-13 03:05:48,099 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:48,099 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:05:48,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,104 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) [2022-07-13 03:05:48,106 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 [2022-07-13 03:05:48,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:48,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:48,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:48,119 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: [] [2022-07-13 03:05:48,136 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 [2022-07-13 03:05:48,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,138 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) [2022-07-13 03:05:48,139 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 [2022-07-13 03:05:48,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:48,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:48,151 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:48,151 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:05:48,167 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 [2022-07-13 03:05:48,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,169 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) [2022-07-13 03:05:48,170 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 [2022-07-13 03:05:48,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:48,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:48,210 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 [2022-07-13 03:05:48,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,216 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) [2022-07-13 03:05:48,220 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 [2022-07-13 03:05:48,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:05:48,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:48,319 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:05:48,325 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 [2022-07-13 03:05:48,325 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:48,325 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:48,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:48,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:48,325 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:05:48,326 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,326 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:48,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:48,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2022-07-13 03:05:48,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:48,326 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:48,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:48,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:48,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:48,394 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:48,394 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:05:48,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,395 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) [2022-07-13 03:05:48,396 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 [2022-07-13 03:05:48,398 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:48,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:48,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:48,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:48,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:48,405 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:48,405 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:48,416 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:48,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:48,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,435 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) [2022-07-13 03:05:48,436 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 [2022-07-13 03:05:48,438 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:48,443 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:48,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:48,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:48,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:48,460 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:48,460 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:48,466 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:48,509 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 [2022-07-13 03:05:48,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,511 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) [2022-07-13 03:05:48,511 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 [2022-07-13 03:05:48,513 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:48,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:48,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:05:48,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:48,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:48,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:48,520 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:05:48,520 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:05:48,525 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:05:48,528 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:05:48,528 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:05:48,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,529 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) [2022-07-13 03:05:48,531 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 [2022-07-13 03:05:48,532 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:05:48,532 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:05:48,532 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:05:48,532 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-07-13 03:05:48,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:48,547 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:05:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:48,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:48,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:48,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:48,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:48,618 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-13 03:05:48,618 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:48,632 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 36 transitions. Complement of second has 7 states. [2022-07-13 03:05:48,632 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 [2022-07-13 03:05:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-13 03:05:48,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2022-07-13 03:05:48,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:48,633 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:05:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:48,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:48,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:48,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:48,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:48,690 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-13 03:05:48,690 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:48,705 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 35 transitions. Complement of second has 7 states. [2022-07-13 03:05:48,705 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 [2022-07-13 03:05:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-07-13 03:05:48,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 3 letters. [2022-07-13 03:05:48,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:48,706 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:05:48,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:48,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:48,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:48,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:48,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:48,745 INFO L152 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 [2022-07-13 03:05:48,745 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:48,757 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 6 states. [2022-07-13 03:05:48,758 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 [2022-07-13 03:05:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-07-13 03:05:48,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2022-07-13 03:05:48,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:48,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2022-07-13 03:05:48,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:48,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2022-07-13 03:05:48,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:48,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2022-07-13 03:05:48,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-07-13 03:05:48,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 26 states and 34 transitions. [2022-07-13 03:05:48,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-13 03:05:48,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-07-13 03:05:48,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2022-07-13 03:05:48,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:05:48,760 INFO L369 hiAutomatonCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-07-13 03:05:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2022-07-13 03:05:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2022-07-13 03:05:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 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) [2022-07-13 03:05:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-07-13 03:05:48,761 INFO L392 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-07-13 03:05:48,761 INFO L374 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-07-13 03:05:48,762 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-13 03:05:48,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2022-07-13 03:05:48,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-13 03:05:48,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:48,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:48,762 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-07-13 03:05:48,762 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2022-07-13 03:05:48,762 INFO L752 eck$LassoCheckResult]: Stem: 546#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 547#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 548#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 550#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 555#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 553#L23 assume !(main_~q~0#1 < main_~p~0#1); 554#L26 [2022-07-13 03:05:48,762 INFO L754 eck$LassoCheckResult]: Loop: 554#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 551#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 552#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 559#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 560#L23 assume !(main_~q~0#1 < main_~p~0#1); 554#L26 [2022-07-13 03:05:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-07-13 03:05:48,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:48,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196373092] [2022-07-13 03:05:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:48,766 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:48,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash 46517562, now seen corresponding path program 1 times [2022-07-13 03:05:48,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:48,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897187624] [2022-07-13 03:05:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:48,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:48,772 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:48,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994736, now seen corresponding path program 5 times [2022-07-13 03:05:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:48,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456507414] [2022-07-13 03:05:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:48,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:48,780 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:48,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:48,824 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:48,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:48,824 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:48,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:48,824 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:05:48,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:48,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:48,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2022-07-13 03:05:48,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:48,824 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:48,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:48,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:48,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:48,884 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:48,884 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:05:48,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,886 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) [2022-07-13 03:05:48,887 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 [2022-07-13 03:05:48,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:48,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:48,899 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:48,899 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: [] [2022-07-13 03:05:48,916 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 [2022-07-13 03:05:48,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,917 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) [2022-07-13 03:05:48,919 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 [2022-07-13 03:05:48,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:48,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:48,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:48,941 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: [] [2022-07-13 03:05:48,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-13 03:05:48,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,957 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) [2022-07-13 03:05:48,959 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 [2022-07-13 03:05:48,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:48,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:48,989 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 [2022-07-13 03:05:48,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:48,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:48,990 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:05:48,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-13 03:05:48,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:05:48,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:49,140 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:05:49,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:49,143 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:49,143 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:49,143 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:49,143 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:49,143 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:05:49,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:49,143 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:49,144 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2022-07-13 03:05:49,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:49,144 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:49,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,215 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:49,215 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:05:49,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,217 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) [2022-07-13 03:05:49,218 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 [2022-07-13 03:05:49,219 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:49,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:49,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:49,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:49,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:49,225 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:49,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:49,241 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:49,259 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 [2022-07-13 03:05:49,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,261 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) [2022-07-13 03:05:49,262 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 [2022-07-13 03:05:49,263 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:49,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:49,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:49,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:49,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:49,269 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:49,269 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:49,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:49,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:49,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,290 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) [2022-07-13 03:05:49,291 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 [2022-07-13 03:05:49,292 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:49,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:49,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:05:49,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:49,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:49,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:49,300 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:05:49,300 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:05:49,308 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:05:49,311 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:05:49,311 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:05:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,312 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) [2022-07-13 03:05:49,313 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 [2022-07-13 03:05:49,314 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:05:49,314 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:05:49,314 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:05:49,314 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-07-13 03:05:49,330 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 [2022-07-13 03:05:49,331 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:05:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:49,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:49,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:49,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 03:05:49,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:49,406 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-07-13 03:05:49,406 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:49,439 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 62 transitions. Complement of second has 8 states. [2022-07-13 03:05:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-13 03:05:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2022-07-13 03:05:49,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 5 letters. [2022-07-13 03:05:49,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:49,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 11 letters. Loop has 5 letters. [2022-07-13 03:05:49,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:49,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 10 letters. [2022-07-13 03:05:49,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:49,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 62 transitions. [2022-07-13 03:05:49,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:05:49,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 38 transitions. [2022-07-13 03:05:49,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-13 03:05:49,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-13 03:05:49,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 38 transitions. [2022-07-13 03:05:49,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:05:49,442 INFO L369 hiAutomatonCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-07-13 03:05:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 38 transitions. [2022-07-13 03:05:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-07-13 03:05:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:05:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-07-13 03:05:49,443 INFO L392 hiAutomatonCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-07-13 03:05:49,443 INFO L374 stractBuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-07-13 03:05:49,443 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-13 03:05:49,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2022-07-13 03:05:49,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:05:49,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:05:49,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:05:49,444 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 1, 1, 1, 1] [2022-07-13 03:05:49,444 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:05:49,444 INFO L752 eck$LassoCheckResult]: Stem: 669#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 670#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 671#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 673#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 684#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 682#L23 assume !(main_~q~0#1 < main_~p~0#1); 683#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 690#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 689#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 688#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 685#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 678#L26-2 [2022-07-13 03:05:49,444 INFO L754 eck$LassoCheckResult]: Loop: 678#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 677#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 678#L26-2 [2022-07-13 03:05:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994734, now seen corresponding path program 6 times [2022-07-13 03:05:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:49,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514800313] [2022-07-13 03:05:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:49,465 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:49,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 3 times [2022-07-13 03:05:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:49,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700436530] [2022-07-13 03:05:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:49,505 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:49,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1866286831, now seen corresponding path program 7 times [2022-07-13 03:05:49,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:05:49,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456105130] [2022-07-13 03:05:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:05:49,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:05:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:49,520 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:05:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:05:49,524 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 [2022-07-13 03:05:49,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:05:49,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-07-13 03:05:49,561 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:49,561 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:49,561 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:49,561 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:49,561 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:05:49,561 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,561 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:49,562 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:49,562 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2022-07-13 03:05:49,562 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:49,562 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:49,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,590 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:49,590 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:05:49,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,592 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) [2022-07-13 03:05:49,593 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 [2022-07-13 03:05:49,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:49,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:49,615 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:49,615 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: [] [2022-07-13 03:05:49,630 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 [2022-07-13 03:05:49,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,632 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) [2022-07-13 03:05:49,634 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 [2022-07-13 03:05:49,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:49,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:49,645 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:05:49,645 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: [] [2022-07-13 03:05:49,659 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 [2022-07-13 03:05:49,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,661 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) [2022-07-13 03:05:49,664 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 [2022-07-13 03:05:49,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:05:49,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:49,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-07-13 03:05:49,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,708 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) [2022-07-13 03:05:49,709 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 [2022-07-13 03:05:49,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:05:49,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:05:49,744 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:05:49,747 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 [2022-07-13 03:05:49,747 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:05:49,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:05:49,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:05:49,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:05:49,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:05:49,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:05:49,747 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:05:49,747 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2022-07-13 03:05:49,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:05:49,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:05:49,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:05:49,800 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:05:49,800 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:05:49,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,801 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) [2022-07-13 03:05:49,802 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 [2022-07-13 03:05:49,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:49,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:49,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:49,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:49,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:49,810 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:49,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:49,819 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:49,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:49,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,870 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) [2022-07-13 03:05:49,871 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 [2022-07-13 03:05:49,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:49,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:49,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:49,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:49,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:49,880 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:05:49,880 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:05:49,891 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:05:49,906 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 [2022-07-13 03:05:49,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,908 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) [2022-07-13 03:05:49,909 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 [2022-07-13 03:05:49,910 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:05:49,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:05:49,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:05:49,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:05:49,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:05:49,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:05:49,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:05:49,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:05:49,927 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:05:49,928 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-13 03:05:49,928 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:05:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:05:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:05:49,932 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) [2022-07-13 03:05:49,933 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 [2022-07-13 03:05:49,934 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:05:49,934 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:05:49,934 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:05:49,934 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-07-13 03:05:49,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:49,960 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:05:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:49,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:49,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:49,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:49,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:49,996 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:05:49,996 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 03:05:50,006 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 32 states and 40 transitions. Complement of second has 5 states. [2022-07-13 03:05:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:05:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 03:05:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-13 03:05:50,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-07-13 03:05:50,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:50,007 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:05:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:50,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:50,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:50,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:50,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:50,039 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:05:50,040 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 03:05:50,048 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 32 states and 40 transitions. Complement of second has 5 states. [2022-07-13 03:05:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:05:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 03:05:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-13 03:05:50,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-07-13 03:05:50,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:50,050 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:05:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:05:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:50,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:05:50,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:05:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:05:50,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:05:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:05:50,084 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:05:50,084 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 03:05:50,096 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 36 states and 47 transitions. Complement of second has 4 states. [2022-07-13 03:05:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:05:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 03:05:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-07-13 03:05:50,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2022-07-13 03:05:50,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:50,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 2 letters. [2022-07-13 03:05:50,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:50,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 4 letters. [2022-07-13 03:05:50,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:05:50,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 47 transitions. [2022-07-13 03:05:50,099 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:05:50,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2022-07-13 03:05:50,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:05:50,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:05:50,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:05:50,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:05:50,099 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:05:50,099 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:05:50,099 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:05:50,100 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-13 03:05:50,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 03:05:50,100 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:05:50,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 03:05:50,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:05:50 BoogieIcfgContainer [2022-07-13 03:05:50,121 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:05:50,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:05:50,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:05:50,122 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:05:50,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:05:45" (3/4) ... [2022-07-13 03:05:50,125 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 03:05:50,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:05:50,125 INFO L158 Benchmark]: Toolchain (without parser) took 4797.16ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 100.0MB in the beginning and 93.7MB in the end (delta: 6.3MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-07-13 03:05:50,126 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 83.9MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:05:50,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.95ms. Allocated memory is still 132.1MB. Free memory was 100.0MB in the beginning and 107.2MB in the end (delta: -7.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-07-13 03:05:50,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.35ms. Allocated memory is still 132.1MB. Free memory was 107.2MB in the beginning and 105.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:05:50,126 INFO L158 Benchmark]: Boogie Preprocessor took 13.36ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 105.2MB in the end (delta: 511.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:05:50,126 INFO L158 Benchmark]: RCFGBuilder took 203.92ms. Allocated memory is still 132.1MB. Free memory was 105.2MB in the beginning and 96.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:05:50,127 INFO L158 Benchmark]: BuchiAutomizer took 4370.87ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 96.2MB in the beginning and 93.7MB in the end (delta: 2.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-07-13 03:05:50,127 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 159.4MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:05:50,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 83.9MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.95ms. Allocated memory is still 132.1MB. Free memory was 100.0MB in the beginning and 107.2MB in the end (delta: -7.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.35ms. Allocated memory is still 132.1MB. Free memory was 107.2MB in the beginning and 105.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.36ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 105.2MB in the end (delta: 511.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.92ms. Allocated memory is still 132.1MB. Free memory was 105.2MB in the beginning and 96.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4370.87ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 96.2MB in the beginning and 93.7MB in the end (delta: 2.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 159.4MB. Free memory is still 93.7MB. 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 affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 8 iterations. TraceHistogramMax:4. Analysis of lassos took 3.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 6 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: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 63 mSDtfsCounter, 131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf107 neg98 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-13 03:05:50,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-07-13 03:05:50,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE