./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.12.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-restricted-15/b.12.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 640b8fd5c71f51509139c5a180a4d7fcd9c913685cbc00020531a66381fc7b29 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:12:18,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:12:18,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:12:18,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:12:18,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:12:18,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:12:18,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:12:18,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:12:18,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:12:18,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:12:18,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:12:18,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:12:18,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:12:18,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:12:18,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:12:18,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:12:18,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:12:18,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:12:18,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:12:18,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:12:18,697 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:12:18,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:12:18,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:12:18,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:12:18,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:12:18,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:12:18,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:12:18,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:12:18,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:12:18,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:12:18,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:12:18,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:12:18,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:12:18,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:12:18,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:12:18,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:12:18,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:12:18,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:12:18,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:12:18,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:12:18,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:12:18,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:12:18,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:12:18,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:12:18,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:12:18,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:12:18,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:12:18,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:12:18,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:12:18,742 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:12:18,742 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:12:18,742 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:12:18,743 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:12:18,743 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:12:18,743 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:12:18,744 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:12:18,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:12:18,744 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:12:18,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:12:18,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:12:18,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:12:18,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:12:18,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:12:18,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:12:18,745 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:12:18,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:12:18,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:12:18,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:12:18,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:12:18,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:12:18,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:12:18,747 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:12:18,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 640b8fd5c71f51509139c5a180a4d7fcd9c913685cbc00020531a66381fc7b29 [2022-07-13 03:12:18,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:12:18,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:12:18,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:12:18,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:12:18,991 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:12:18,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.12.c [2022-07-13 03:12:19,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dff23f4/1a2aa7aefb384eb0b9a40e730feee243/FLAG94be92a5a [2022-07-13 03:12:19,419 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:12:19,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.12.c [2022-07-13 03:12:19,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dff23f4/1a2aa7aefb384eb0b9a40e730feee243/FLAG94be92a5a [2022-07-13 03:12:19,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94dff23f4/1a2aa7aefb384eb0b9a40e730feee243 [2022-07-13 03:12:19,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:12:19,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:12:19,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:12:19,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:12:19,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:12:19,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c8b069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19, skipping insertion in model container [2022-07-13 03:12:19,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:12:19,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:12:19,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:12:19,605 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:12:19,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:12:19,621 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:12:19,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19 WrapperNode [2022-07-13 03:12:19,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:12:19,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:12:19,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:12:19,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:12:19,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,642 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-13 03:12:19,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:12:19,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:12:19,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:12:19,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:12:19,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:12:19,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:12:19,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:12:19,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:12:19,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (1/1) ... [2022-07-13 03:12:19,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:19,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:19,681 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 03:12:19,686 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 03:12:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:12:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:12:19,758 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:12:19,759 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:12:19,809 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:12:19,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:12:19,815 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 03:12:19,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:12:19 BoogieIcfgContainer [2022-07-13 03:12:19,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:12:19,817 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:12:19,817 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:12:19,820 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:12:19,821 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:12:19,821 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:12:19" (1/3) ... [2022-07-13 03:12:19,822 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6be0bdc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:12:19, skipping insertion in model container [2022-07-13 03:12:19,822 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:12:19,822 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:19" (2/3) ... [2022-07-13 03:12:19,822 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6be0bdc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:12:19, skipping insertion in model container [2022-07-13 03:12:19,822 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:12:19,822 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:12:19" (3/3) ... [2022-07-13 03:12:19,823 INFO L354 chiAutomizerObserver]: Analyzing ICFG b.12.c [2022-07-13 03:12:19,864 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:12:19,865 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:12:19,865 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:12:19,865 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:12:19,865 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:12:19,865 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:12:19,865 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:12:19,866 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:12:19,869 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 03:12:19,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:19,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:19,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:19,886 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:12:19,886 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:12:19,886 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:12:19,887 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 03:12:19,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:19,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:19,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:19,888 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:12:19,888 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:12:19,893 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 8#L15-2true [2022-07-13 03:12:19,894 INFO L754 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~x~0#1 > 0 || main_~y~0#1 > 0); 9#L12true assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 8#L15-2true [2022-07-13 03:12:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:12:19,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:19,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55962431] [2022-07-13 03:12:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:19,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:19,964 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:19,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-07-13 03:12:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:19,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918486735] [2022-07-13 03:12:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:19,989 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:19,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:19,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:19,995 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-13 03:12:19,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:19,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411113936] [2022-07-13 03:12:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,002 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:20,087 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:20,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:20,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:20,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:20,089 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:12:20,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:20,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:20,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2022-07-13 03:12:20,090 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:20,090 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:20,115 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 03:12:20,122 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 03:12:20,126 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 03:12:20,202 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:20,203 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:12:20,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,206 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 03:12:20,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:20,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:20,250 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 03:12:20,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:20,264 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 03:12:20,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:20,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,293 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 03:12:20,294 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 03:12:20,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:20,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:20,319 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:20,319 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 03:12:20,340 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 03:12:20,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,343 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 03:12:20,344 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 03:12:20,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:20,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:20,379 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 03:12:20,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:20,381 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 03:12:20,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:12:20,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:20,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:12:20,417 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 03:12:20,417 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:20,418 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:20,418 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:20,418 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:20,418 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:12:20,418 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:20,418 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:20,418 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2022-07-13 03:12:20,418 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:20,418 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:20,419 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 03:12:20,430 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 03:12:20,443 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 03:12:20,496 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:20,503 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:12:20,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,505 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 03:12:20,508 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 03:12:20,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:20,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:20,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:20,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:20,523 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:12:20,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:12:20,532 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 03:12:20,542 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:12:20,565 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 03:12:20,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,568 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 03:12:20,573 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 03:12:20,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:20,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:20,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:20,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:20,584 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:12:20,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:12:20,588 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 03:12:20,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:12:20,621 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 03:12:20,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,624 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 03:12:20,626 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 03:12:20,627 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 03:12:20,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:20,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:12:20,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:20,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:20,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:20,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:12:20,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:12:20,655 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:12:20,665 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:12:20,665 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:12:20,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,668 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 03:12:20,684 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 03:12:20,687 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:12:20,687 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:12:20,687 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:12:20,687 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-13 03:12:20,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-07-13 03:12:20,736 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:12:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:20,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:12:20,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:20,788 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:12:20,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:20,792 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 03:12:20,813 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-13 03:12:20,815 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 03:12:20,837 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 24 states and 35 transitions. Complement of second has 5 states. [2022-07-13 03:12:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:12:20,845 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 03:12:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-07-13 03:12:20,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-13 03:12:20,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:20,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-13 03:12:20,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:20,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-13 03:12:20,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:20,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 35 transitions. [2022-07-13 03:12:20,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:20,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 11 states and 16 transitions. [2022-07-13 03:12:20,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-13 03:12:20,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-13 03:12:20,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2022-07-13 03:12:20,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:12:20,852 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2022-07-13 03:12:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2022-07-13 03:12:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-13 03:12:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2022-07-13 03:12:20,868 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-07-13 03:12:20,868 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-07-13 03:12:20,868 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:12:20,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2022-07-13 03:12:20,869 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:20,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:20,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:20,869 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 03:12:20,869 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:12:20,869 INFO L752 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 69#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 74#L15-2 assume !!(main_~x~0#1 > 0 || main_~y~0#1 > 0); 75#L12 [2022-07-13 03:12:20,870 INFO L754 eck$LassoCheckResult]: Loop: 75#L12 assume !(main_~x~0#1 > 0); 70#L15 assume main_~y~0#1 > 0;main_~y~0#1 := main_~y~0#1 - 1; 71#L15-2 assume !!(main_~x~0#1 > 0 || main_~y~0#1 > 0); 75#L12 [2022-07-13 03:12:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-13 03:12:20,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:20,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940203772] [2022-07-13 03:12:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:20,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,874 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 45767, now seen corresponding path program 1 times [2022-07-13 03:12:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766129400] [2022-07-13 03:12:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:20,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,882 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:20,885 INFO L85 PathProgramCache]: Analyzing trace with hash 889694400, now seen corresponding path program 1 times [2022-07-13 03:12:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:20,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628429713] [2022-07-13 03:12:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:20,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,889 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:20,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:20,911 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:20,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:20,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:20,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:20,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:12:20,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:20,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:20,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2022-07-13 03:12:20,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:20,912 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:20,913 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 03:12:20,915 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 03:12:20,917 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 03:12:20,919 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 03:12:20,946 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:20,946 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:12:20,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:20,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:20,952 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 03:12:20,953 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 03:12:20,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:20,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:21,032 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:21,032 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 03:12:21,049 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 03:12:21,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,050 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 03:12:21,051 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 03:12:21,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:21,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:21,062 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:21,063 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 03:12:21,079 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 03:12:21,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,081 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 03:12:21,085 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 03:12:21,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:21,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:21,100 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:21,101 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:12:21,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:21,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,128 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 03:12:21,130 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 03:12:21,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:21,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:21,166 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 03:12:21,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,168 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 03:12:21,169 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 03:12:21,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:12:21,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:21,222 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:12:21,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:21,226 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:21,226 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:21,226 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:21,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:21,226 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:12:21,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:21,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:21,226 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2022-07-13 03:12:21,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:21,226 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:21,227 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 03:12:21,230 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 03:12:21,232 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 03:12:21,235 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 03:12:21,264 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:21,264 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:12:21,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,266 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 03:12:21,267 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 03:12:21,268 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 03:12:21,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:21,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:21,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:21,274 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:21,276 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:12:21,276 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:12:21,329 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:12:21,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-07-13 03:12:21,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,347 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 03:12:21,348 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 03:12:21,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:12:21,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:21,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:12:21,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:21,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:21,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:21,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:12:21,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:12:21,365 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:12:21,387 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 03:12:21,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,390 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 03:12:21,391 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 03:12:21,392 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 03:12:21,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:21,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:21,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:21,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:21,400 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:12:21,400 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:12:21,410 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:12:21,443 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 03:12:21,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,445 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 03:12:21,457 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 03:12:21,457 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 03:12:21,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:21,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:12:21,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:21,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:21,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:21,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:12:21,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:12:21,480 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:12:21,481 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-13 03:12:21,482 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:12:21,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:21,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:21,483 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 03:12:21,508 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 03:12:21,508 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:12:21,508 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:12:21,508 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:12:21,508 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-13 03:12:21,526 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 03:12:21,527 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:12:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:21,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:12:21,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:21,553 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 03:12:21,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:21,609 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 03:12:21,610 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 03:12:21,610 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:21,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 54 transitions. Complement of second has 7 states. [2022-07-13 03:12:21,629 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 03:12:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2022-07-13 03:12:21,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 3 letters. [2022-07-13 03:12:21,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:21,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-13 03:12:21,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:21,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 6 letters. [2022-07-13 03:12:21,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:21,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2022-07-13 03:12:21,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:21,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 25 states and 36 transitions. [2022-07-13 03:12:21,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-13 03:12:21,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-13 03:12:21,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 36 transitions. [2022-07-13 03:12:21,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:12:21,633 INFO L369 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2022-07-13 03:12:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 36 transitions. [2022-07-13 03:12:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-07-13 03:12:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 20 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 03:12:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2022-07-13 03:12:21,636 INFO L392 hiAutomatonCegarLoop]: Abstraction has 21 states and 32 transitions. [2022-07-13 03:12:21,636 INFO L374 stractBuchiCegarLoop]: Abstraction has 21 states and 32 transitions. [2022-07-13 03:12:21,636 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:12:21,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 32 transitions. [2022-07-13 03:12:21,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:21,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:21,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:21,637 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:12:21,637 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:12:21,637 INFO L752 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 158#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 164#L15-2 assume !!(main_~x~0#1 > 0 || main_~y~0#1 > 0); 173#L12 assume !(main_~x~0#1 > 0); 159#L15 [2022-07-13 03:12:21,637 INFO L754 eck$LassoCheckResult]: Loop: 159#L15 assume !(main_~y~0#1 > 0); 160#L15-2 assume !!(main_~x~0#1 > 0 || main_~y~0#1 > 0); 165#L12 assume !(main_~x~0#1 > 0); 159#L15 [2022-07-13 03:12:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-13 03:12:21,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:21,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517806774] [2022-07-13 03:12:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:21,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:21,641 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:21,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:21,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash 50329, now seen corresponding path program 1 times [2022-07-13 03:12:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:21,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852814177] [2022-07-13 03:12:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:21,664 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 03:12:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:12:21,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852814177] [2022-07-13 03:12:21,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852814177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:12:21,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:12:21,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 03:12:21,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246342894] [2022-07-13 03:12:21,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:12:21,668 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 03:12:21,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:12:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 03:12:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 03:12:21,670 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. cyclomatic complexity: 15 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 03:12:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:12:21,683 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2022-07-13 03:12:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 03:12:21,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2022-07-13 03:12:21,684 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:12:21,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2022-07-13 03:12:21,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:12:21,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:12:21,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:12:21,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:12:21,685 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:21,685 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:21,685 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:21,685 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:12:21,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 03:12:21,686 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:12:21,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 03:12:21,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:12:21 BoogieIcfgContainer [2022-07-13 03:12:21,691 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:12:21,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:12:21,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:12:21,691 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:12:21,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:12:19" (3/4) ... [2022-07-13 03:12:21,694 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 03:12:21,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:12:21,694 INFO L158 Benchmark]: Toolchain (without parser) took 2256.02ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 68.5MB in the end (delta: 35.2MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2022-07-13 03:12:21,695 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:21,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.88ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 112.0MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 03:12:21,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.11ms. Allocated memory is still 136.3MB. Free memory was 112.0MB in the beginning and 110.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:21,696 INFO L158 Benchmark]: Boogie Preprocessor took 12.73ms. Allocated memory is still 136.3MB. Free memory was 110.9MB in the beginning and 109.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:21,696 INFO L158 Benchmark]: RCFGBuilder took 159.10ms. Allocated memory is still 136.3MB. Free memory was 109.8MB in the beginning and 102.0MB in the end (delta: 7.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 03:12:21,696 INFO L158 Benchmark]: BuchiAutomizer took 1873.44ms. Allocated memory is still 136.3MB. Free memory was 101.5MB in the beginning and 69.2MB in the end (delta: 32.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2022-07-13 03:12:21,696 INFO L158 Benchmark]: Witness Printer took 2.71ms. Allocated memory is still 136.3MB. Free memory is still 68.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:21,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.88ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 112.0MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.11ms. Allocated memory is still 136.3MB. Free memory was 112.0MB in the beginning and 110.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.73ms. Allocated memory is still 136.3MB. Free memory was 110.9MB in the beginning and 109.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 159.10ms. Allocated memory is still 136.3MB. Free memory was 109.8MB in the beginning and 102.0MB in the end (delta: 7.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1873.44ms. Allocated memory is still 136.3MB. Free memory was 101.5MB in the beginning and 69.2MB in the end (delta: 32.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Witness Printer took 2.71ms. Allocated memory is still 136.3MB. Free memory is still 68.5MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 19 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s 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 03:12:21,740 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 03:12:21,932 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 03:12:22,148 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