./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c0afa1d46bded0eb2bd485bf4790c0d11468ed7a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:34:25,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:34:25,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:34:25,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:34:25,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:34:25,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:34:25,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:34:25,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:34:25,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:34:25,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:34:25,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:34:25,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:34:25,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:34:25,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:34:25,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:34:25,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:34:25,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:34:25,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:34:25,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:34:25,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:34:25,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:34:25,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:34:25,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:34:25,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:34:25,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:34:25,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:34:25,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:34:25,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:34:25,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:34:25,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:34:25,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:34:25,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:34:25,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:34:25,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:34:25,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:34:25,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:34:25,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:34:25,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:34:25,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:34:25,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:34:25,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:34:25,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:34:25,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:34:25,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:34:25,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:34:25,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:34:25,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:34:25,818 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:34:25,818 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:34:25,819 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:34:25,819 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:34:25,819 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:34:25,820 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:34:25,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:34:25,821 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:34:25,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:34:25,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:34:25,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:34:25,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:34:25,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:34:25,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:34:25,823 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:34:25,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:34:25,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:34:25,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:34:25,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:34:25,825 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:34:25,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:34:25,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:34:25,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:34:25,826 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:34:25,827 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:34:25,827 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2020-10-20 06:34:26,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:34:26,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:34:26,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:34:26,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:34:26,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:34:26,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2020-10-20 06:34:26,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb0f53937/d205bca5413c4bf08f35cf14e3e2a91b/FLAGf9a4fb884 [2020-10-20 06:34:26,661 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:26,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2020-10-20 06:34:26,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb0f53937/d205bca5413c4bf08f35cf14e3e2a91b/FLAGf9a4fb884 [2020-10-20 06:34:27,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb0f53937/d205bca5413c4bf08f35cf14e3e2a91b [2020-10-20 06:34:27,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:27,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:27,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:27,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:27,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:27,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779cc586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27, skipping insertion in model container [2020-10-20 06:34:27,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:27,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:27,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:27,370 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:27,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:27,403 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:27,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27 WrapperNode [2020-10-20 06:34:27,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:27,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:27,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:27,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:27,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:27,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:27,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:27,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:27,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... [2020-10-20 06:34:27,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:27,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:27,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:27,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:27,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:27,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:27,679 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:34:27,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:27 BoogieIcfgContainer [2020-10-20 06:34:27,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:27,681 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:27,681 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:27,685 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:27,686 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:27,686 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:27" (1/3) ... [2020-10-20 06:34:27,687 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60f79cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:27, skipping insertion in model container [2020-10-20 06:34:27,687 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:27,688 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:27" (2/3) ... [2020-10-20 06:34:27,688 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60f79cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:27, skipping insertion in model container [2020-10-20 06:34:27,688 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:27,688 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:27" (3/3) ... [2020-10-20 06:34:27,690 INFO L373 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2020-10-20 06:34:27,753 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:27,753 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:27,753 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:27,753 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:27,753 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:27,753 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:27,754 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:27,754 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:27,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:34:27,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:27,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:27,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:27,870 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:27,874 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:27,874 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:27,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:34:27,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:27,878 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:27,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:27,879 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:27,879 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:27,890 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2020-10-20 06:34:27,891 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 7#L24-2true assume !(main_~y~0 < main_~z~0); 5#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 10#L22-2true [2020-10-20 06:34:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-10-20 06:34:27,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:27,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694982099] [2020-10-20 06:34:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:27,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:27,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:28,012 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2020-10-20 06:34:28,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:28,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853067685] [2020-10-20 06:34:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:28,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:28,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:28,032 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:28,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:28,034 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2020-10-20 06:34:28,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:28,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189632741] [2020-10-20 06:34:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:28,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:28,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:28,063 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:28,131 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:28,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:28,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:28,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:28,133 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:28,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,133 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:28,133 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:28,133 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2020-10-20 06:34:28,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:28,134 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:28,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:28,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:28,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:28,280 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:28,281 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:28,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:28,306 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:28,306 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:28,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:28,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:28,360 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:28,360 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: [] Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:28,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:28,397 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:28,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:28,445 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,636 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:28,639 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:28,639 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:28,639 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:28,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:28,639 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:28,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,640 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:28,640 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:28,640 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2020-10-20 06:34:28,640 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:28,640 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:28,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:28,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:28,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:28,727 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:28,732 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:28,752 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:28,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:28,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:28,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:28,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:28,766 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:28,767 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,777 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:28,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:28,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:28,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:28,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:28,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:28,828 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:28,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:28,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:28,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:28,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:28,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:28,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:28,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:28,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:28,883 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-10-20 06:34:28,916 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:28,932 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:28,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:28,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:28,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:28,935 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:28,939 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-10-20 06:34:28,940 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,947 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:28,986 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:28,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:28,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:28,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:28,989 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:28,993 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-10-20 06:34:28,994 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-10-20 06:34:29,000 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:29,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:29,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:29,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:29,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:29,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:29,050 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:29,053 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-10-20 06:34:29,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:29,060 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:29,074 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-10-20 06:34:29,074 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:29,081 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:29,082 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:29,082 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:29,083 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-20 06:34:29,125 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:29,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:29,228 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:34:29,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:29,272 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:29,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:29,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:34:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:29,336 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:34:29,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2020-10-20 06:34:29,405 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2020-10-20 06:34:29,406 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 [2020-10-20 06:34:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-10-20 06:34:29,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2020-10-20 06:34:29,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:29,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:34:29,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:29,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2020-10-20 06:34:29,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:29,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2020-10-20 06:34:29,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:29,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2020-10-20 06:34:29,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:34:29,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-20 06:34:29,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2020-10-20 06:34:29,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:29,425 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-10-20 06:34:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2020-10-20 06:34:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 06:34:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 06:34:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2020-10-20 06:34:29,454 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-10-20 06:34:29,454 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-10-20 06:34:29,454 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:34:29,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2020-10-20 06:34:29,455 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:29,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:29,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:29,456 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:34:29,456 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:34:29,456 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2020-10-20 06:34:29,456 INFO L796 eck$LassoCheckResult]: Loop: 97#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2020-10-20 06:34:29,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:29,457 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2020-10-20 06:34:29,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:29,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963604839] [2020-10-20 06:34:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:29,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:29,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:29,477 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-10-20 06:34:29,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:29,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475363157] [2020-10-20 06:34:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:29,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:29,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:29,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2020-10-20 06:34:29,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:29,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800109313] [2020-10-20 06:34:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:29,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:29,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:29,546 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:29,575 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:29,576 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:29,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:29,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:29,576 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:29,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:29,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:29,577 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:29,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2020-10-20 06:34:29,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:29,577 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:29,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:29,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:29,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:29,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:29,653 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:29,653 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:29,672 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:29,672 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:29,677 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:29,677 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:29,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:29,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:29,718 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:29,718 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:29,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:29,763 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:29,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:29,827 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,029 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:30,031 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:30,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:30,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:30,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:30,031 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:30,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:30,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:30,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2020-10-20 06:34:30,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:30,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:30,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,133 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:30,134 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:30,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:30,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:30,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:30,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:30,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:30,158 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:30,158 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,162 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:30,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:30,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:30,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:30,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:30,199 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:30,199 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:30,208 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:30,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:30,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:30,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:30,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:30,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:30,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:30,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:30,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:30,247 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:30,248 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:30,252 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:30,253 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:30,253 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:30,253 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,286 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:30,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:30,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:30,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:30,316 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:30,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:30,317 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 [2020-10-20 06:34:30,317 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2020-10-20 06:34:30,331 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 17 states and 28 transitions. Complement of second has 6 states. [2020-10-20 06:34:30,332 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 [2020-10-20 06:34:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 06:34:30,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2020-10-20 06:34:30,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:30,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2020-10-20 06:34:30,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:30,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:34:30,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:30,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2020-10-20 06:34:30,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:30,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2020-10-20 06:34:30,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 06:34:30,337 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-20 06:34:30,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-10-20 06:34:30,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:30,337 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-10-20 06:34:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-10-20 06:34:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-20 06:34:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:34:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-10-20 06:34:30,358 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-10-20 06:34:30,358 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-10-20 06:34:30,358 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:34:30,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-10-20 06:34:30,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:30,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:30,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:30,367 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 06:34:30,367 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:30,368 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2020-10-20 06:34:30,368 INFO L796 eck$LassoCheckResult]: Loop: 152#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 153#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 159#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2020-10-20 06:34:30,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:30,368 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2020-10-20 06:34:30,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:30,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306417257] [2020-10-20 06:34:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:30,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:30,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:30,404 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2020-10-20 06:34:30,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:30,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82191844] [2020-10-20 06:34:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:30,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:30,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:30,428 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:30,429 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2020-10-20 06:34:30,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:30,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294619114] [2020-10-20 06:34:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:30,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:30,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:30,446 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:30,469 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:30,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:30,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:30,470 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:30,470 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:30,470 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,470 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:30,470 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:30,470 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2020-10-20 06:34:30,470 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:30,470 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:30,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:30,540 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:30,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:30,560 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:30,565 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:30,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:30,618 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:30,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:30,665 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,960 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:30,962 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:30,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:30,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:30,962 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:30,962 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:30,962 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:30,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:30,963 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:30,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2020-10-20 06:34:30,963 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:30,963 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:30,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:30,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:31,026 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:31,027 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:31,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:31,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:31,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:31,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:31,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:31,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:31,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:31,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,047 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:31,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:31,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:31,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:31,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:31,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:31,089 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:31,089 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,094 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:31,133 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:31,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:31,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:31,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:31,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:31,138 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:31,138 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,142 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-10-20 06:34:31,179 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:31,182 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:31,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:31,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:31,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:31,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:31,185 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:31,187 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-10-20 06:34:31,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,191 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:31,199 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 06:34:31,200 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:31,208 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:31,208 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:31,208 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:31,208 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,245 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:31,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:31,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:31,322 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:34:31,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:31,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:31,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:31,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:31,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:31,446 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 [2020-10-20 06:34:31,446 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2020-10-20 06:34:31,499 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 30 states and 45 transitions. Complement of second has 8 states. [2020-10-20 06:34:31,501 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 [2020-10-20 06:34:31,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-20 06:34:31,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:34:31,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:31,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:34:31,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:31,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2020-10-20 06:34:31,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:31,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2020-10-20 06:34:31,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:31,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2020-10-20 06:34:31,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:34:31,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:34:31,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2020-10-20 06:34:31,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:31,507 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2020-10-20 06:34:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2020-10-20 06:34:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-10-20 06:34:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:34:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-10-20 06:34:31,510 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-20 06:34:31,510 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-20 06:34:31,511 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:34:31,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-10-20 06:34:31,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:34:31,512 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:31,512 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:31,512 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-10-20 06:34:31,512 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:34:31,512 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2020-10-20 06:34:31,513 INFO L796 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2020-10-20 06:34:31,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2020-10-20 06:34:31,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:31,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161720340] [2020-10-20 06:34:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:31,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:31,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:31,565 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2020-10-20 06:34:31,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:31,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542785982] [2020-10-20 06:34:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:31,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:31,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:31,586 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:31,587 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2020-10-20 06:34:31,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:31,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936275033] [2020-10-20 06:34:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:31,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:31,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:31,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:31,669 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:31,670 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:31,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:31,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:31,670 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:31,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:31,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:31,671 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2020-10-20 06:34:31,671 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:31,671 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:31,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:31,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:31,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:31,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:31,746 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:31,746 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:31,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:31,753 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:31,754 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:31,777 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:31,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:31,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:32,043 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:32,045 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:32,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:32,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:32,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:32,046 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:32,046 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,046 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:32,046 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:32,046 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2020-10-20 06:34:32,046 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:32,046 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:32,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,122 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:32,123 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:32,131 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:32,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:32,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:32,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:32,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:32,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:32,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:32,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:32,141 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:32,142 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:32,145 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:32,145 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:32,145 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:32,145 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,165 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:32,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:32,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:32,201 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:32,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:32,202 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 [2020-10-20 06:34:32,202 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 06:34:32,218 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2020-10-20 06:34:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:34:32,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-10-20 06:34:32,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:32,221 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:32,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:32,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:32,254 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:32,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:32,255 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 06:34:32,255 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 06:34:32,265 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2020-10-20 06:34:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:34:32,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-10-20 06:34:32,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:32,266 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:32,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:32,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:32,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:32,301 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:32,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:32,302 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 06:34:32,302 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-10-20 06:34:32,317 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 29 states and 45 transitions. Complement of second has 5 states. [2020-10-20 06:34:32,317 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 [2020-10-20 06:34:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:34:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 06:34:32,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2020-10-20 06:34:32,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:32,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2020-10-20 06:34:32,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:32,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-20 06:34:32,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:32,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2020-10-20 06:34:32,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:34:32,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2020-10-20 06:34:32,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 06:34:32,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-20 06:34:32,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2020-10-20 06:34:32,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:32,323 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2020-10-20 06:34:32,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2020-10-20 06:34:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-10-20 06:34:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:34:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-10-20 06:34:32,326 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-20 06:34:32,326 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-20 06:34:32,326 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:34:32,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-10-20 06:34:32,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:34:32,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:32,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:32,327 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-10-20 06:34:32,327 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:34:32,328 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2020-10-20 06:34:32,328 INFO L796 eck$LassoCheckResult]: Loop: 447#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 448#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2020-10-20 06:34:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2020-10-20 06:34:32,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:32,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837899917] [2020-10-20 06:34:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:32,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:32,341 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:32,342 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2020-10-20 06:34:32,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:32,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693254481] [2020-10-20 06:34:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:32,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:32,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:32,350 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:32,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:32,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2020-10-20 06:34:32,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:32,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75207763] [2020-10-20 06:34:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:32,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75207763] [2020-10-20 06:34:32,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234081065] [2020-10-20 06:34:32,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:34:32,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-20 06:34:32,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:34:32,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:34:32,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:32,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:34:32,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 06:34:32,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734117871] [2020-10-20 06:34:32,519 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:32,519 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:32,519 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:32,519 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:32,519 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:32,520 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,520 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:32,520 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:32,520 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2020-10-20 06:34:32,520 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:32,520 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:32,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,596 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:32,596 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:32,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:32,604 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,608 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:32,609 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:32,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:32,635 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:32,635 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:32,657 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:32,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:32,683 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:32,890 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:32,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:32,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:32,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:32,890 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:32,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:32,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:32,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2020-10-20 06:34:32,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:32,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:32,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:32,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:32,945 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:32,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:32,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:32,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:32,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:32,952 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:32,952 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:32,956 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:32,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:32,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:32,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:32,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:32,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:32,980 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:32,980 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:32,984 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:33,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:33,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:33,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:33,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:33,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:33,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:33,022 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:33,022 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:33,024 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-10-20 06:34:33,045 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:33,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:33,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:33,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:33,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:33,049 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:33,054 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-10-20 06:34:33,054 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-10-20 06:34:33,057 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:33,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:33,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:33,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:33,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:33,082 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:33,084 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-10-20 06:34:33,084 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-10-20 06:34:33,089 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:33,128 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:33,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:33,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:33,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:33,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:33,132 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-10-20 06:34:33,134 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-10-20 06:34:33,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:33,146 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:33,155 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 06:34:33,156 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:33,164 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:33,165 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:33,165 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:33,165 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:33,195 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:33,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:33,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:33,229 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:34:33,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:33,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:33,297 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:33,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:33,303 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:33,352 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 [2020-10-20 06:34:33,353 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-10-20 06:34:33,408 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 26 states and 37 transitions. Complement of second has 7 states. [2020-10-20 06:34:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-10-20 06:34:33,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:34:33,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:33,411 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:33,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:33,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:33,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:33,442 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:34:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:33,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:33,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:33,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:33,518 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:33,570 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:34:33,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-10-20 06:34:33,602 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 7 states. [2020-10-20 06:34:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-20 06:34:33,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:34:33,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:33,604 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:33,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:33,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:33,641 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:34:33,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:33,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:33,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:33,694 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:34:33,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:34:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:33,747 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:34:33,747 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-10-20 06:34:33,773 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 31 states and 43 transitions. Complement of second has 6 states. [2020-10-20 06:34:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:34:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:34:33,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:34:33,777 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:33,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2020-10-20 06:34:33,777 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:33,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2020-10-20 06:34:33,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:33,778 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2020-10-20 06:34:33,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:34:33,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2020-10-20 06:34:33,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 06:34:33,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 06:34:33,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2020-10-20 06:34:33,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:33,781 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-10-20 06:34:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2020-10-20 06:34:33,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2020-10-20 06:34:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:34:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2020-10-20 06:34:33,784 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2020-10-20 06:34:33,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:34:33,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:34:33,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:34:33,790 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2020-10-20 06:34:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:34:33,924 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-10-20 06:34:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:34:33,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2020-10-20 06:34:33,925 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:34:33,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2020-10-20 06:34:33,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 06:34:33,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 06:34:33,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2020-10-20 06:34:33,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:33,926 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-10-20 06:34:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2020-10-20 06:34:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-10-20 06:34:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:34:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-10-20 06:34:33,929 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-10-20 06:34:33,929 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-10-20 06:34:33,930 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:34:33,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2020-10-20 06:34:33,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:34:33,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:33,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:33,931 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-10-20 06:34:33,931 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:34:33,931 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2020-10-20 06:34:33,931 INFO L796 eck$LassoCheckResult]: Loop: 778#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 779#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 789#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2020-10-20 06:34:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:33,932 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2020-10-20 06:34:33,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:33,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760079438] [2020-10-20 06:34:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:33,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:33,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:33,944 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:33,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2020-10-20 06:34:33,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:33,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263678764] [2020-10-20 06:34:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:33,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:33,952 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:33,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2020-10-20 06:34:33,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:33,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237142700] [2020-10-20 06:34:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:33,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:33,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:33,972 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:34,005 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:34,005 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:34,005 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:34,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:34,006 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:34,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:34,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:34,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2020-10-20 06:34:34,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:34,007 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:34,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:34,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:34,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:34,119 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:34,119 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:34,125 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:34,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:34,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:34,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:34,154 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:34,154 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:34,177 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:34,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:34,201 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,718 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:34,719 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:34,719 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:34,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:34,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:34,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:34,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:34,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:34,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2020-10-20 06:34:34,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:34,720 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:34,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:34,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:34,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:34,801 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:34,802 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,805 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:34,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:34,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:34,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:34,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:34,808 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:34,808 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:34,812 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:34,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:34,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:34,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:34,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:34,836 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:34,836 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:34,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:34,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:34,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:34,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:34,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:34,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:34,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:34:34,870 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:34,873 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:34,877 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:34,877 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:34,880 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:34,880 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:34,880 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:34,880 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-10-20 06:34:34,901 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:34,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:34,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:34,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:34:34,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:34,991 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 [2020-10-20 06:34:34,991 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2020-10-20 06:34:35,013 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 35 states and 50 transitions. Complement of second has 6 states. [2020-10-20 06:34:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:34:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-20 06:34:35,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2020-10-20 06:34:35,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:35,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-20 06:34:35,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:35,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2020-10-20 06:34:35,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:35,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2020-10-20 06:34:35,018 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:35,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2020-10-20 06:34:35,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:34:35,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:34:35,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:34:35,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:35,020 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:35,020 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:35,020 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:35,020 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:34:35,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:34:35,021 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:35,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:34:35,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:35 BoogieIcfgContainer [2020-10-20 06:34:35,029 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:35,029 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:35,029 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:35,030 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:35,030 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:27" (3/4) ... [2020-10-20 06:34:35,033 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:34:35,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:35,041 INFO L168 Benchmark]: Toolchain (without parser) took 7966.26 ms. Allocated memory was 35.7 MB in the beginning and 63.4 MB in the end (delta: 27.8 MB). Free memory was 13.4 MB in the beginning and 35.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,043 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 19.4 MB in the beginning and 19.4 MB in the end (delta: 30.9 kB). Peak memory consumption was 30.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.88 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 12.4 MB in the beginning and 25.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.94 ms. Allocated memory is still 44.0 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,050 INFO L168 Benchmark]: Boogie Preprocessor took 19.16 ms. Allocated memory is still 44.0 MB. Free memory was 24.1 MB in the beginning and 23.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,051 INFO L168 Benchmark]: RCFGBuilder took 226.04 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 22.9 MB in the beginning and 25.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,051 INFO L168 Benchmark]: BuchiAutomizer took 7347.49 ms. Allocated memory was 45.6 MB in the beginning and 63.4 MB in the end (delta: 17.8 MB). Free memory was 24.8 MB in the beginning and 36.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,054 INFO L168 Benchmark]: Witness Printer took 4.27 ms. Allocated memory is still 63.4 MB. Free memory was 36.2 MB in the beginning and 35.5 MB in the end (delta: 666.4 kB). Peak memory consumption was 666.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:35,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 19.4 MB in the beginning and 19.4 MB in the end (delta: 30.9 kB). Peak memory consumption was 30.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 326.88 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 12.4 MB in the beginning and 25.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 30.94 ms. Allocated memory is still 44.0 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.16 ms. Allocated memory is still 44.0 MB. Free memory was 24.1 MB in the beginning and 23.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 226.04 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 22.9 MB in the beginning and 25.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 7347.49 ms. Allocated memory was 45.6 MB in the beginning and 63.4 MB in the end (delta: 17.8 MB). Free memory was 24.8 MB in the beginning and 36.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. * Witness Printer took 4.27 ms. Allocated memory is still 63.4 MB. Free memory was 36.2 MB in the beginning and 35.5 MB in the end (delta: 666.4 kB). Peak memory consumption was 666.4 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.2s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 5.4s. Construction of modules took 0.1s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 68 SDslu, 8 SDs, 0 SdLazy, 143 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf96 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...