./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer --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 0.1.24-6b5699a [2019-11-25 08:54:54,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:54,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:54,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:54,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:54,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:54,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:54,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:54,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:54,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:54,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:54,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:54,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:54,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:54,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:54,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:54,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:54,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:54,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:54,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:54,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:54,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:54,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:54,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:54,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:54,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:54,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:54,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:54,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:54,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:54,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:54,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:54,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:54,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:54,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:54,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:54,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:54,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:54,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:54,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:54,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:54,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:54:54,853 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:54,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:54,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:54,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:54,865 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:54,865 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:54:54,865 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:54:54,866 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:54:54,866 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:54:54,866 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:54:54,866 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:54:54,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:54,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:54:54,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:54,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:54,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:54:54,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:54:54,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:54:54,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:54,868 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:54:54,869 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:54,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:54:54,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:54,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:54,870 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:54:54,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:54,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:54:54,871 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:54:54,872 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:54:54,873 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer 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 [2019-11-25 08:54:55,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:55,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:55,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:55,075 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:55,076 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:55,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-11-25 08:54:55,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/data/7e8385c52/cd715688b1f742c8856ce753bdfead5c/FLAGde9528c83 [2019-11-25 08:54:55,521 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:55,522 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-11-25 08:54:55,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/data/7e8385c52/cd715688b1f742c8856ce753bdfead5c/FLAGde9528c83 [2019-11-25 08:54:55,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/data/7e8385c52/cd715688b1f742c8856ce753bdfead5c [2019-11-25 08:54:55,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:55,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:55,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:55,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:55,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:55,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:55" (1/1) ... [2019-11-25 08:54:55,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b3a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:55, skipping insertion in model container [2019-11-25 08:54:55,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:55" (1/1) ... [2019-11-25 08:54:56,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:56,025 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:56,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:56,225 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:56,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:56,325 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:56,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56 WrapperNode [2019-11-25 08:54:56,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:56,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:56,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:56,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:56,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:56,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:56,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:56,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:56,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... [2019-11-25 08:54:56,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:56,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:56,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:56,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:56,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:54:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:56,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:56,618 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:56,618 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:54:56,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:56 BoogieIcfgContainer [2019-11-25 08:54:56,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:56,620 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:54:56,620 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:54:56,623 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:54:56,624 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:56,625 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:54:55" (1/3) ... [2019-11-25 08:54:56,626 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2424fe72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:54:56, skipping insertion in model container [2019-11-25 08:54:56,626 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:56,627 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:56" (2/3) ... [2019-11-25 08:54:56,628 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2424fe72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:54:56, skipping insertion in model container [2019-11-25 08:54:56,628 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:56,628 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:56" (3/3) ... [2019-11-25 08:54:56,630 INFO L371 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2019-11-25 08:54:56,687 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:54:56,688 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:54:56,688 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:54:56,688 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:56,688 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:56,688 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:54:56,689 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:56,689 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:54:56,702 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:54:56,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:54:56,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:56,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:56,730 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:54:56,731 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:54:56,731 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:54:56,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:54:56,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:54:56,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:56,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:56,733 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:54:56,733 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:54:56,741 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2019-11-25 08:54:56,742 INFO L796 eck$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 [2019-11-25 08:54:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-25 08:54:56,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:56,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203156875] [2019-11-25 08:54:56,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:56,854 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2019-11-25 08:54:56,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:56,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904209350] [2019-11-25 08:54:56,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:56,868 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:56,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:56,869 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2019-11-25 08:54:56,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:56,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430637624] [2019-11-25 08:54:56,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:56,888 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:56,943 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:54:56,944 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:54:56,944 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:54:56,944 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:54:56,944 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:54:56,944 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:56,945 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:54:56,945 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:54:56,945 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-11-25 08:54:56,945 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:54:56,945 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:54:56,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:56,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:56,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:57,125 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:54:57,126 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:54:57,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:54:57,147 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:54:57,160 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:54:57,160 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:57,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:54:57,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:54:57,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:54:57,179 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:57,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:54:57,203 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:57,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:54:57,218 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:54:59,408 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:54:59,410 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:54:59,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:54:59,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:54:59,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:54:59,410 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:54:59,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:59,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:54:59,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:54:59,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2019-11-25 08:54:59,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:54:59,411 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:54:59,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:59,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:59,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:59,544 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:54:59,549 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:59,567 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 [2019-11-25 08:54:59,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:59,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:59,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:59,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:59,579 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:59,581 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 [2019-11-25 08:54:59,591 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:59,608 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 [2019-11-25 08:54:59,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:59,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:59,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:59,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:59,616 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:59,617 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:59,624 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:59,640 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 [2019-11-25 08:54:59,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:59,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:59,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:59,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:59,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:59,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:59,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:59,655 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-25 08:54:59,658 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:59,677 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 [2019-11-25 08:54:59,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:59,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:59,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:59,680 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:54:59,689 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-25 08:54:59,689 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 [2019-11-25 08:54:59,697 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:54:59,707 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 [2019-11-25 08:54:59,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:59,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:59,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:59,710 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:54:59,719 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-25 08:54:59,719 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-11-25 08:54:59,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:59,739 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 [2019-11-25 08:54:59,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:59,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:59,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:59,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:59,744 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:54:59,747 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-25 08:54:59,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:54:59,754 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:54:59,766 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-25 08:54:59,766 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:59,780 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:54:59,780 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:54:59,781 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:59,782 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 [] [2019-11-25 08:54:59,788 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:54:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:59,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:54:59,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:59,853 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:54:59,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:59,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:54:59,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:54:59,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:54:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:59,919 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 [2019-11-25 08:54:59,920 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2019-11-25 08:54:59,977 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2019-11-25 08:54:59,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:54:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:54:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-11-25 08:54:59,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-25 08:54:59,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:59,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-25 08:54:59,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:59,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-25 08:54:59,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:59,984 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-25 08:54:59,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:54:59,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2019-11-25 08:54:59,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-25 08:54:59,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:54:59,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-11-25 08:54:59,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:54:59,993 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-25 08:55:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-11-25 08:55:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-25 08:55:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:55:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-25 08:55:00,018 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-25 08:55:00,018 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-25 08:55:00,018 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:55:00,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2019-11-25 08:55:00,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:00,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:00,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:00,019 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:55:00,019 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:55:00,020 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2019-11-25 08:55:00,020 INFO L796 eck$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 [2019-11-25 08:55:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2019-11-25 08:55:00,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:00,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208649194] [2019-11-25 08:55:00,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,038 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:00,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,039 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-11-25 08:55:00,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:00,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183689627] [2019-11-25 08:55:00,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,057 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:00,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,059 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2019-11-25 08:55:00,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:00,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798820430] [2019-11-25 08:55:00,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,088 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:00,105 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:00,105 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:00,105 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:00,105 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:00,105 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:55:00,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:00,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:00,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:00,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-11-25 08:55:00,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:00,106 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:00,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,193 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:00,193 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:00,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:00,206 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 [2019-11-25 08:55:00,210 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:00,210 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:00,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:00,225 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:00,229 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:00,230 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:00,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:00,243 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:00,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:55:00,272 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 [2019-11-25 08:55:00,486 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:55:00,489 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:00,489 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:00,489 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:00,489 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:00,490 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:55:00,490 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:00,490 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:00,490 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:00,490 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2019-11-25 08:55:00,490 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:00,490 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:00,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,575 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:00,575 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:00,580 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 [2019-11-25 08:55:00,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:00,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:00,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:00,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:00,585 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:00,585 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:00,589 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:00,599 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 [2019-11-25 08:55:00,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:00,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:00,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:00,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:00,603 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:00,603 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:00,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:00,623 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 [2019-11-25 08:55:00,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:00,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:00,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:00,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:00,626 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:00,627 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:55:00,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:00,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:55:00,640 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:55:00,640 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:00,650 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:55:00,654 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:55:00,654 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:55:00,655 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 [] [2019-11-25 08:55:00,658 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:55:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:00,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:00,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:00,690 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:55:00,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:00,691 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 [2019-11-25 08:55:00,691 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2019-11-25 08:55:00,709 INFO L76 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. [2019-11-25 08:55:00,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:55:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-25 08:55:00,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-25 08:55:00,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:00,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:55:00,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:00,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:55:00,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:00,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2019-11-25 08:55:00,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:00,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2019-11-25 08:55:00,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:55:00,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-25 08:55:00,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-25 08:55:00,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:55:00,716 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-25 08:55:00,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-25 08:55:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-25 08:55:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:55:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-11-25 08:55:00,718 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-25 08:55:00,718 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-25 08:55:00,718 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:55:00,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-11-25 08:55:00,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:00,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:00,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:00,720 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:55:00,721 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:55:00,721 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2019-11-25 08:55:00,721 INFO L796 eck$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 [2019-11-25 08:55:00,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,721 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2019-11-25 08:55:00,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:00,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182542657] [2019-11-25 08:55:00,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,734 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2019-11-25 08:55:00,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:00,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522041527] [2019-11-25 08:55:00,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,742 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2019-11-25 08:55:00,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:00,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032205239] [2019-11-25 08:55:00,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:00,758 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:00,788 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:00,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:00,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:00,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:00,788 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:55:00,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:00,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:00,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:00,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-11-25 08:55:00,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:00,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:00,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:00,863 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:00,863 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:00,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:00,876 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 [2019-11-25 08:55:00,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:00,881 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:00,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:00,897 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:00,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:55:00,912 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 [2019-11-25 08:55:03,163 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:55:03,165 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:03,165 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:03,166 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:03,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:03,166 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:55:03,166 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:03,166 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:03,166 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:03,166 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2019-11-25 08:55:03,166 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:03,166 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:03,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,254 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:03,255 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:03,259 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 [2019-11-25 08:55:03,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:03,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:03,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:03,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:03,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:03,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:55:03,263 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 [2019-11-25 08:55:03,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:03,273 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 [2019-11-25 08:55:03,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:03,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:03,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:03,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:03,276 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:03,277 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:03,280 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:03,288 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 [2019-11-25 08:55:03,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:03,289 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:03,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:03,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:03,292 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:03,292 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:03,298 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-25 08:55:03,300 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:03,307 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 [2019-11-25 08:55:03,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:03,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:03,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:03,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:03,310 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:55:03,312 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-25 08:55:03,312 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:55:03,322 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:55:03,331 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-25 08:55:03,331 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:03,343 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:55:03,343 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:55:03,343 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:55:03,343 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 [] [2019-11-25 08:55:03,351 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:03,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:03,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:03,386 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:55:03,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:03,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:03,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:03,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:03,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:03,518 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 [2019-11-25 08:55:03,518 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-25 08:55:03,578 INFO L76 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. [2019-11-25 08:55:03,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:55:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-11-25 08:55:03,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-25 08:55:03,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:03,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-25 08:55:03,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:03,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-25 08:55:03,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:03,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2019-11-25 08:55:03,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:03,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2019-11-25 08:55:03,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:55:03,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:55:03,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-11-25 08:55:03,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:55:03,584 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-11-25 08:55:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-11-25 08:55:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-25 08:55:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:55:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-11-25 08:55:03,586 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-25 08:55:03,586 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-25 08:55:03,587 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:55:03,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-11-25 08:55:03,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:03,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:03,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:03,588 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-25 08:55:03,588 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:55:03,589 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2019-11-25 08:55:03,589 INFO L796 eck$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 [2019-11-25 08:55:03,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2019-11-25 08:55:03,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:03,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867377374] [2019-11-25 08:55:03,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:03,607 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:03,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:03,608 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-11-25 08:55:03,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:03,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888063696] [2019-11-25 08:55:03,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:03,613 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:03,614 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2019-11-25 08:55:03,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:03,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780068563] [2019-11-25 08:55:03,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:03,634 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:03,655 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:03,655 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:03,655 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:03,655 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:03,655 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:55:03,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:03,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:03,656 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:03,656 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-11-25 08:55:03,656 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:03,656 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:03,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,722 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:03,722 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:03,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:03,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:03,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:03,729 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:03,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:03,733 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:03,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:55:03,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:03,928 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:55:03,930 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:03,930 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:03,930 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:03,930 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:03,930 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:55:03,930 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:03,930 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:03,930 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:03,930 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2019-11-25 08:55:03,930 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:03,930 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:03,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:03,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:04,005 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:04,005 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:04,013 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 [2019-11-25 08:55:04,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:04,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:04,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:04,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:04,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:04,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:55:04,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:55:04,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:55:04,021 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:55:04,021 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:04,024 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:55:04,024 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:55:04,024 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:55:04,024 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 [] [2019-11-25 08:55:04,026 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:55:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:04,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:04,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:04,057 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:55:04,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:04,058 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 [2019-11-25 08:55:04,058 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-25 08:55:04,068 INFO L76 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. [2019-11-25 08:55:04,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:55:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-25 08:55:04,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-25 08:55:04,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:04,070 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:55:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:04,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:04,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:04,099 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:55:04,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:04,100 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 [2019-11-25 08:55:04,100 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-25 08:55:04,116 INFO L76 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. [2019-11-25 08:55:04,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:55:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-25 08:55:04,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-25 08:55:04,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:04,117 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:55:04,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:04,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:04,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:04,148 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:55:04,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:04,149 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 [2019-11-25 08:55:04,149 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-25 08:55:04,162 INFO L76 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. [2019-11-25 08:55:04,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:55:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-25 08:55:04,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-25 08:55:04,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:04,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-25 08:55:04,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:04,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-25 08:55:04,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:04,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2019-11-25 08:55:04,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:55:04,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2019-11-25 08:55:04,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:55:04,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:55:04,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2019-11-25 08:55:04,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:55:04,167 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2019-11-25 08:55:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2019-11-25 08:55:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-25 08:55:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:55:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-11-25 08:55:04,169 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-25 08:55:04,169 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-25 08:55:04,169 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:55:04,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-11-25 08:55:04,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:55:04,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:04,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:04,171 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-25 08:55:04,171 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:55:04,172 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2019-11-25 08:55:04,172 INFO L796 eck$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 [2019-11-25 08:55:04,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2019-11-25 08:55:04,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:04,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692993624] [2019-11-25 08:55:04,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:04,186 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2019-11-25 08:55:04,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:04,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482177276] [2019-11-25 08:55:04,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:04,192 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2019-11-25 08:55:04,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:04,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574300634] [2019-11-25 08:55:04,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:04,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574300634] [2019-11-25 08:55:04,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744501767] [2019-11-25 08:55:04,328 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:04,359 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-11-25 08:55:04,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:55:04,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:55:04,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:04,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:55:04,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-25 08:55:04,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323884437] [2019-11-25 08:55:04,423 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:04,423 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:04,423 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:04,423 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:04,423 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:55:04,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:04,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:04,424 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:04,424 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-11-25 08:55:04,424 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:04,424 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:04,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:04,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:04,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:04,477 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:04,478 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:04,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:04,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:04,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:04,489 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:04,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:04,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:04,497 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:04,497 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:04,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:04,501 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:04,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:55:04,515 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 [2019-11-25 08:55:06,703 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:55:06,705 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:06,705 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:06,705 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:06,705 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:06,705 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:55:06,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:06,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:06,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:06,705 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2019-11-25 08:55:06,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:06,705 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:06,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:06,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:06,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:06,770 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:06,770 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:06,774 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 [2019-11-25 08:55:06,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:06,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:06,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:06,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:06,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:06,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:06,780 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:06,785 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 [2019-11-25 08:55:06,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:06,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:06,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:06,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:06,788 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:06,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:06,795 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:06,811 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 [2019-11-25 08:55:06,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:06,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:06,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:06,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:06,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:06,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:55:06,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:06,818 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-25 08:55:06,820 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:06,824 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 [2019-11-25 08:55:06,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:06,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:06,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:06,826 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:55:06,828 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-25 08:55:06,829 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:06,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:06,840 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 [2019-11-25 08:55:06,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:06,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:06,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:06,842 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:55:06,846 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-25 08:55:06,846 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:06,851 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:06,857 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 [2019-11-25 08:55:06,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:06,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:06,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:06,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:06,860 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-25 08:55:06,862 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-25 08:55:06,862 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 [2019-11-25 08:55:06,867 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:55:06,874 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:55:06,874 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:06,879 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:55:06,879 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:55:06,879 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:55:06,879 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 [] [2019-11-25 08:55:06,881 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:06,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:06,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:06,906 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:55:06,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:06,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:06,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:06,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:06,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:07,013 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 [2019-11-25 08:55:07,013 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-25 08:55:07,041 INFO L76 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. [2019-11-25 08:55:07,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:55:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-11-25 08:55:07,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-25 08:55:07,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:07,043 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:55:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:07,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:07,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:07,076 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:55:07,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:07,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:07,176 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 [2019-11-25 08:55:07,176 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-25 08:55:07,202 INFO L76 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. [2019-11-25 08:55:07,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:55:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-25 08:55:07,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-25 08:55:07,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:07,204 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:55:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:07,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:07,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:07,234 WARN L253 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:55:07,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:07,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:55:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:07,326 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 [2019-11-25 08:55:07,327 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-25 08:55:07,355 INFO L76 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. [2019-11-25 08:55:07,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:55:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-25 08:55:07,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-25 08:55:07,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:07,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-25 08:55:07,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:07,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-25 08:55:07,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:07,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2019-11-25 08:55:07,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:55:07,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2019-11-25 08:55:07,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:55:07,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-25 08:55:07,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2019-11-25 08:55:07,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:55:07,361 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-11-25 08:55:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2019-11-25 08:55:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2019-11-25 08:55:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:55:07,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-11-25 08:55:07,363 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-25 08:55:07,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:07,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:55:07,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:55:07,366 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2019-11-25 08:55:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:07,497 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2019-11-25 08:55:07,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:55:07,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2019-11-25 08:55:07,498 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:55:07,499 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2019-11-25 08:55:07,499 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:55:07,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-25 08:55:07,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2019-11-25 08:55:07,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:55:07,500 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2019-11-25 08:55:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2019-11-25 08:55:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-11-25 08:55:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:55:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2019-11-25 08:55:07,502 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-11-25 08:55:07,502 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-11-25 08:55:07,502 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:55:07,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2019-11-25 08:55:07,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:55:07,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:07,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:07,503 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-25 08:55:07,503 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:55:07,503 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2019-11-25 08:55:07,503 INFO L796 eck$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 [2019-11-25 08:55:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2019-11-25 08:55:07,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:07,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007487958] [2019-11-25 08:55:07,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:07,545 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:07,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2019-11-25 08:55:07,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:07,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065178101] [2019-11-25 08:55:07,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:07,553 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2019-11-25 08:55:07,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:07,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048203288] [2019-11-25 08:55:07,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:07,587 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:07,614 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:07,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:07,615 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:07,615 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:07,615 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:55:07,615 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:07,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:07,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:07,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-11-25 08:55:07,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:07,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:07,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:07,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:07,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:07,696 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:07,696 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:07,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:07,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:07,704 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:07,704 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:07,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:07,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:07,711 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:07,712 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 /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:07,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:07,716 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:07,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:55:07,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:08,277 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:55:08,279 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:08,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:08,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:08,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:08,279 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:55:08,279 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:08,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:08,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:08,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2019-11-25 08:55:08,280 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:08,280 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:08,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:08,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:08,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:08,347 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:08,347 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:08,350 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 [2019-11-25 08:55:08,352 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:08,352 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:08,352 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:08,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:08,353 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:08,353 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:08,356 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:08,360 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 [2019-11-25 08:55:08,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:08,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:08,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:08,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:08,364 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:08,365 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:08,368 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:08,372 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 [2019-11-25 08:55:08,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:08,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:08,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:08,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:08,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:08,375 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:55:08,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:55:08,377 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:55:08,381 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:55:08,381 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27c509f8-8e7a-4bf4-ade5-ffee5da50ad6/bin/uautomizer/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 [2019-11-25 08:55:08,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:55:08,386 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:55:08,386 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:55:08,386 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-11-25 08:55:08,387 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:55:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:08,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:08,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:08,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:55:08,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:08,428 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 [2019-11-25 08:55:08,428 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-25 08:55:08,444 INFO L76 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. [2019-11-25 08:55:08,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:55:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:55:08,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-25 08:55:08,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:08,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-25 08:55:08,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:08,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2019-11-25 08:55:08,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:08,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2019-11-25 08:55:08,447 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:55:08,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2019-11-25 08:55:08,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:55:08,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:55:08,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:55:08,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:55:08,448 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:08,448 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:08,448 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:08,448 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:55:08,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:55:08,448 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:55:08,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:55:08,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:55:08 BoogieIcfgContainer [2019-11-25 08:55:08,454 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:55:08,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:55:08,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:55:08,455 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:55:08,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:56" (3/4) ... [2019-11-25 08:55:08,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:55:08,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:55:08,459 INFO L168 Benchmark]: Toolchain (without parser) took 12474.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 950.1 MB in the beginning and 854.4 MB in the end (delta: 95.7 MB). Peak memory consumption was 302.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:08,460 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:08,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:08,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:08,461 INFO L168 Benchmark]: Boogie Preprocessor took 26.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:08,462 INFO L168 Benchmark]: RCFGBuilder took 233.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:08,462 INFO L168 Benchmark]: BuchiAutomizer took 11833.98 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 854.4 MB in the end (delta: 261.3 MB). Peak memory consumption was 327.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:08,463 INFO L168 Benchmark]: Witness Printer took 3.51 ms. Allocated memory is still 1.2 GB. Free memory is still 854.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:08,465 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 340.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 233.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 11833.98 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 854.4 MB in the end (delta: 261.3 MB). Peak memory consumption was 327.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.51 ms. Allocated memory is still 1.2 GB. Free memory is still 854.4 MB. There was no memory consumed. Max. memory is 11.5 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 11.7s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 10.3s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. 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: inital18 mio100 ax166 hnf97 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 7.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...