./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa --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 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:59:47,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:59:47,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:59:47,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:59:47,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:59:47,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:59:47,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:59:47,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:59:47,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:59:47,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:59:47,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:59:47,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:59:47,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:59:47,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:59:47,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:59:47,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:59:47,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:59:47,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:59:47,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:59:47,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:59:47,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:59:47,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:59:47,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:59:47,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:59:47,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:59:47,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:59:47,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:59:47,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:59:47,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:59:47,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:59:47,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:59:47,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:59:47,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:59:47,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:59:47,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:59:47,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:59:47,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:59:47,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:59:47,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:59:47,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:59:47,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:59:47,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 19:59:47,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:59:47,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:59:47,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:59:47,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:59:47,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:59:47,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:59:47,832 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:59:47,832 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 19:59:47,832 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 19:59:47,832 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 19:59:47,832 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 19:59:47,832 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 19:59:47,833 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 19:59:47,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:59:47,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:59:47,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:59:47,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:59:47,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 19:59:47,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 19:59:47,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 19:59:47,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:59:47,834 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 19:59:47,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:59:47,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 19:59:47,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:59:47,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:59:47,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:59:47,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:59:47,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:59:47,836 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 19:59:47,836 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2021-12-06 19:59:48,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:59:48,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:59:48,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:59:48,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:59:48,046 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:59:48,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-12-06 19:59:48,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/data/5e462be78/3752de0eb8554be693a00139c7112929/FLAG9db5df89e [2021-12-06 19:59:48,448 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:59:48,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-12-06 19:59:48,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/data/5e462be78/3752de0eb8554be693a00139c7112929/FLAG9db5df89e [2021-12-06 19:59:48,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/data/5e462be78/3752de0eb8554be693a00139c7112929 [2021-12-06 19:59:48,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:59:48,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:59:48,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:59:48,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:59:48,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:59:48,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b9b065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48, skipping insertion in model container [2021-12-06 19:59:48,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:59:48,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:59:48,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:59:48,579 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:59:48,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:59:48,597 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:59:48,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48 WrapperNode [2021-12-06 19:59:48,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:59:48,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:59:48,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:59:48,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:59:48,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,626 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-06 19:59:48,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:59:48,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:59:48,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:59:48,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:59:48,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:59:48,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:59:48,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:59:48,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:59:48,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (1/1) ... [2021-12-06 19:59:48,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:48,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:48,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:48,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 19:59:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:59:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:59:48,764 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:59:48,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:59:48,816 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:59:48,821 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:59:48,821 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:59:48,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:59:48 BoogieIcfgContainer [2021-12-06 19:59:48,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:59:48,823 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 19:59:48,823 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 19:59:48,826 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 19:59:48,826 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:59:48,826 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 07:59:48" (1/3) ... [2021-12-06 19:59:48,827 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a3dd73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 07:59:48, skipping insertion in model container [2021-12-06 19:59:48,827 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:59:48,827 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:48" (2/3) ... [2021-12-06 19:59:48,828 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a3dd73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 07:59:48, skipping insertion in model container [2021-12-06 19:59:48,828 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:59:48,828 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:59:48" (3/3) ... [2021-12-06 19:59:48,829 INFO L388 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2021-12-06 19:59:48,864 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 19:59:48,865 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 19:59:48,865 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 19:59:48,865 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 19:59:48,865 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 19:59:48,865 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 19:59:48,865 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 19:59:48,865 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 19:59:48,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:48,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 19:59:48,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:48,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:48,893 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 19:59:48,893 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:48,893 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 19:59:48,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:48,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 19:59:48,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:48,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:48,894 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 19:59:48,894 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:48,899 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 6#L18-1true [2021-12-06 19:59:48,899 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11#L12true assume !(10 == main_~i~0#1); 3#L12-2true assume 0 == main_~i~0#1;main_~up~0#1 := 1; 8#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6#L18-1true [2021-12-06 19:59:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-06 19:59:48,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:48,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538160858] [2021-12-06 19:59:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:48,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:48,970 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:48,984 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2021-12-06 19:59:48,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:48,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51375801] [2021-12-06 19:59:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:48,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,000 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,007 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:49,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:49,009 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2021-12-06 19:59:49,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:49,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276981261] [2021-12-06 19:59:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:49,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,018 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,025 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:49,091 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:49,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:49,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:49,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:49,091 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:49,092 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,092 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:49,092 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:49,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2021-12-06 19:59:49,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:49,092 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:49,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,188 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:49,189 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:49,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 19:59:49,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:49,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:49,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:49,213 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: [] [2021-12-06 19:59:49,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:49,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 19:59:49,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:49,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:49,249 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:49,249 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: [] [2021-12-06 19:59:49,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 19:59:49,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 19:59:49,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:49,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:49,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 19:59:49,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 19:59:49,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:49,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:49,316 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:49,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 19:59:49,345 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:49,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:49,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:49,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:49,345 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:49,345 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:49,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:49,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2021-12-06 19:59:49,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:49,345 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:49,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,393 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:49,397 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:49,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 19:59:49,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:49,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:49,411 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:49,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:49,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:49,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:49,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:49,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:49,416 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:49,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-06 19:59:49,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 19:59:49,438 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:49,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:49,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:49,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:49,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:49,450 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:49,450 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:49,454 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:49,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 19:59:49,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 19:59:49,478 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:49,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:49,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:49,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:49,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:49,490 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:49,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:49,495 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:49,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 19:59:49,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,524 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 19:59:49,526 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:49,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:49,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:49,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:49,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:49,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:49,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:49,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:49,537 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:49,541 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:59:49,541 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 19:59:49,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 19:59:49,597 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:49,597 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:49,598 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:49,599 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-06 19:59:49,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-06 19:59:49,663 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:49,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:49,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:49,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:49,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:49,758 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 [2021-12-06 19:59:49,759 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:49,801 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 54 transitions. Complement of second has 8 states. [2021-12-06 19:59:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:49,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-06 19:59:49,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-06 19:59:49,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:49,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-06 19:59:49,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:49,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-06 19:59:49,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:49,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2021-12-06 19:59:49,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-06 19:59:49,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2021-12-06 19:59:49,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-06 19:59:49,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-06 19:59:49,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2021-12-06 19:59:49,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:49,820 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-12-06 19:59:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2021-12-06 19:59:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-06 19:59:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-12-06 19:59:49,851 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-06 19:59:49,851 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-06 19:59:49,851 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 19:59:49,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2021-12-06 19:59:49,852 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-06 19:59:49,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:49,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:49,852 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 19:59:49,852 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:49,853 INFO L791 eck$LassoCheckResult]: Stem: 98#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 99#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 104#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2021-12-06 19:59:49,853 INFO L793 eck$LassoCheckResult]: Loop: 106#L12 assume !(10 == main_~i~0#1); 92#L12-2 assume !(0 == main_~i~0#1); 94#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 108#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2021-12-06 19:59:49,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-06 19:59:49,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:49,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931748381] [2021-12-06 19:59:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:49,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,858 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,861 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2021-12-06 19:59:49,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:49,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432649668] [2021-12-06 19:59:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:49,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,867 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:49,871 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2021-12-06 19:59:49,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:49,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369321331] [2021-12-06 19:59:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:49,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:49,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:49,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:49,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369321331] [2021-12-06 19:59:49,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369321331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:49,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:49,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:59:49,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647059469] [2021-12-06 19:59:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:49,927 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:49,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:49,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:49,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:49,927 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:49,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:49,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:49,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-12-06 19:59:49,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:49,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:49,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:49,987 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:49,987 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:49,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:49,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:49,988 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:49,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 19:59:49,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:49,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,002 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:50,002 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: [] [2021-12-06 19:59:50,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:50,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 19:59:50,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:50,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 19:59:50,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 19:59:50,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:50,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,144 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:50,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 19:59:50,146 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:50,146 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:50,146 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:50,146 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:50,146 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:50,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:50,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:50,146 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-12-06 19:59:50,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:50,146 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:50,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,203 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:50,203 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:50,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,204 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 19:59:50,206 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:50,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:50,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:50,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:50,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:50,215 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:50,215 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:50,217 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:50,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 19:59:50,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 19:59:50,238 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:50,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:50,245 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:50,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:50,245 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-06 19:59:50,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:50,246 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-06 19:59:50,246 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:50,249 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:50,251 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:59:50,251 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 19:59:50,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,253 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 19:59:50,254 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:50,254 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:50,254 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:50,254 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2021-12-06 19:59:50,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 19:59:50,273 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:50,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:50,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:50,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:50,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:50,319 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 [2021-12-06 19:59:50,320 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,340 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 43 transitions. Complement of second has 7 states. [2021-12-06 19:59:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-06 19:59:50,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-06 19:59:50,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:50,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-06 19:59:50,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:50,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-06 19:59:50,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:50,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2021-12-06 19:59:50,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 19:59:50,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2021-12-06 19:59:50,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-06 19:59:50,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-06 19:59:50,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2021-12-06 19:59:50,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:50,344 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 35 transitions. [2021-12-06 19:59:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2021-12-06 19:59:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-12-06 19:59:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2021-12-06 19:59:50,346 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 34 transitions. [2021-12-06 19:59:50,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:50,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:59:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:59:50,349 INFO L87 Difference]: Start difference. First operand 20 states and 34 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:50,357 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2021-12-06 19:59:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:59:50,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2021-12-06 19:59:50,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:59:50,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2021-12-06 19:59:50,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-06 19:59:50,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-06 19:59:50,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2021-12-06 19:59:50,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:50,360 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 46 transitions. [2021-12-06 19:59:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2021-12-06 19:59:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-12-06 19:59:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2021-12-06 19:59:50,363 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2021-12-06 19:59:50,363 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2021-12-06 19:59:50,363 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 19:59:50,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2021-12-06 19:59:50,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:59:50,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:50,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:50,364 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 19:59:50,364 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:50,364 INFO L791 eck$LassoCheckResult]: Stem: 241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 249#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 254#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 236#L12-2 assume !(0 == main_~i~0#1); 238#L15-1 [2021-12-06 19:59:50,364 INFO L793 eck$LassoCheckResult]: Loop: 238#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 258#L12 assume !(10 == main_~i~0#1); 256#L12-2 assume !(0 == main_~i~0#1); 238#L15-1 [2021-12-06 19:59:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2021-12-06 19:59:50,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:50,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682284483] [2021-12-06 19:59:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:50,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,371 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2021-12-06 19:59:50,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:50,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729898351] [2021-12-06 19:59:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:50,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,375 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,378 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:50,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2021-12-06 19:59:50,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:50,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256083264] [2021-12-06 19:59:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:50,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,384 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,389 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:50,412 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:50,412 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:50,412 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:50,412 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:50,412 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:50,412 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,412 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:50,412 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:50,412 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2021-12-06 19:59:50,412 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:50,412 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:50,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,461 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:50,461 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:50,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,462 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 19:59:50,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:50,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,477 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:50,477 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: [] [2021-12-06 19:59:50,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-06 19:59:50,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,496 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 19:59:50,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:50,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:50,513 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=4} Honda state: {ULTIMATE.start_main_~up~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:50,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 19:59:50,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,538 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 19:59:50,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:50,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-06 19:59:50,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,566 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-06 19:59:50,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:50,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,660 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:50,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:50,662 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:50,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:50,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:50,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:50,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:50,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:50,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:50,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2021-12-06 19:59:50,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:50,663 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:50,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,708 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:50,708 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:50,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 19:59:50,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:50,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:50,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:50,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:50,719 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-06 19:59:50,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:50,720 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-06 19:59:50,720 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:50,721 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:50,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-06 19:59:50,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:50,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,740 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-06 19:59:50,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:50,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:50,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:50,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:50,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:50,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:50,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:50,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:50,752 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:50,753 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-06 19:59:50,754 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 19:59:50,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,754 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 19:59:50,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:50,755 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:50,755 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:50,756 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-06 19:59:50,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-06 19:59:50,774 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:50,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:50,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:50,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:50,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:50,814 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 [2021-12-06 19:59:50,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,834 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 65 states and 104 transitions. Complement of second has 7 states. [2021-12-06 19:59:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-06 19:59:50,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-06 19:59:50,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:50,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-06 19:59:50,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:50,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2021-12-06 19:59:50,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:50,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2021-12-06 19:59:50,840 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-12-06 19:59:50,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2021-12-06 19:59:50,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-06 19:59:50,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-12-06 19:59:50,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2021-12-06 19:59:50,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:50,842 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 98 transitions. [2021-12-06 19:59:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2021-12-06 19:59:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-12-06 19:59:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 55 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2021-12-06 19:59:50,847 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2021-12-06 19:59:50,847 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2021-12-06 19:59:50,847 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 19:59:50,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2021-12-06 19:59:50,849 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-12-06 19:59:50,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:50,849 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:50,849 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:59:50,849 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:50,849 INFO L791 eck$LassoCheckResult]: Stem: 386#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 387#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 395#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 423#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 421#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 419#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 415#L18-1 [2021-12-06 19:59:50,849 INFO L793 eck$LassoCheckResult]: Loop: 415#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 412#L12 assume !(10 == main_~i~0#1); 404#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 405#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 415#L18-1 [2021-12-06 19:59:50,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2021-12-06 19:59:50,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:50,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760489757] [2021-12-06 19:59:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:50,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:50,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:50,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760489757] [2021-12-06 19:59:50,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760489757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:50,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:50,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:59:50,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107351882] [2021-12-06 19:59:50,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:50,866 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 19:59:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:50,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2021-12-06 19:59:50,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:50,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752608183] [2021-12-06 19:59:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:50,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,871 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:50,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:50,889 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:50,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:50,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:50,889 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:50,889 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:50,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:50,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:50,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-12-06 19:59:50,890 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:50,890 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:50,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:50,919 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:50,920 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:50,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,921 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 19:59:50,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:50,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:50,931 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:50,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-06 19:59:50,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,951 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 19:59:50,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:50,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,966 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:50,966 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: [] [2021-12-06 19:59:50,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:50,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:50,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:50,985 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:50,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-06 19:59:50,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:50,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:50,998 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:50,998 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:51,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:51,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,017 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-06 19:59:51,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:51,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:51,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-06 19:59:51,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,044 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-06 19:59:51,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:51,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:51,055 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:51,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-06 19:59:51,074 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:51,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:51,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:51,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:51,074 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:51,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,075 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:51,075 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:51,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-12-06 19:59:51,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:51,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:51,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,099 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:51,099 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:51,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,100 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-06 19:59:51,101 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:51,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:51,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:51,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:51,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:51,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:51,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:51,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:51,110 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:51,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-06 19:59:51,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,129 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-06 19:59:51,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:51,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:51,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:51,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:51,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:51,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:51,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:51,142 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:51,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-06 19:59:51,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,161 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-06 19:59:51,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:51,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:51,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:51,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:51,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:51,171 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:51,171 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:51,173 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:51,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-06 19:59:51,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,193 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-06 19:59:51,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:51,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:51,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:51,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:51,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:51,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:51,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:51,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:51,203 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:51,205 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:59:51,205 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 19:59:51,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,206 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-06 19:59:51,207 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:51,207 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:51,207 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:51,207 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-06 19:59:51,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-06 19:59:51,226 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,258 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 [2021-12-06 19:59:51,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,276 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 116 states and 190 transitions. Complement of second has 7 states. [2021-12-06 19:59:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-06 19:59:51,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-06 19:59:51,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-06 19:59:51,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2021-12-06 19:59:51,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,278 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 190 transitions. [2021-12-06 19:59:51,280 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2021-12-06 19:59:51,281 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 107 states and 175 transitions. [2021-12-06 19:59:51,281 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-12-06 19:59:51,282 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-12-06 19:59:51,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 175 transitions. [2021-12-06 19:59:51,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:51,282 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 175 transitions. [2021-12-06 19:59:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 175 transitions. [2021-12-06 19:59:51,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2021-12-06 19:59:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.6770833333333333) internal successors, (161), 95 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 161 transitions. [2021-12-06 19:59:51,288 INFO L704 BuchiCegarLoop]: Abstraction has 96 states and 161 transitions. [2021-12-06 19:59:51,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:59:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:59:51,288 INFO L87 Difference]: Start difference. First operand 96 states and 161 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:51,296 INFO L93 Difference]: Finished difference Result 107 states and 163 transitions. [2021-12-06 19:59:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:59:51,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 163 transitions. [2021-12-06 19:59:51,298 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2021-12-06 19:59:51,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 101 states and 153 transitions. [2021-12-06 19:59:51,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-12-06 19:59:51,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-12-06 19:59:51,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 153 transitions. [2021-12-06 19:59:51,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:51,300 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 153 transitions. [2021-12-06 19:59:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 153 transitions. [2021-12-06 19:59:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2021-12-06 19:59:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2021-12-06 19:59:51,304 INFO L704 BuchiCegarLoop]: Abstraction has 96 states and 148 transitions. [2021-12-06 19:59:51,305 INFO L587 BuchiCegarLoop]: Abstraction has 96 states and 148 transitions. [2021-12-06 19:59:51,305 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 19:59:51,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 148 transitions. [2021-12-06 19:59:51,306 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2021-12-06 19:59:51,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:51,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:51,306 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2021-12-06 19:59:51,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:51,306 INFO L791 eck$LassoCheckResult]: Stem: 818#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 819#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 813#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 815#L12 assume !(10 == main_~i~0#1); 822#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 877#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 873#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 867#L12 assume !(10 == main_~i~0#1); 861#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 859#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 831#L18-1 [2021-12-06 19:59:51,306 INFO L793 eck$LassoCheckResult]: Loop: 831#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 853#L12 assume !(10 == main_~i~0#1); 832#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 830#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 831#L18-1 [2021-12-06 19:59:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1506873443, now seen corresponding path program 1 times [2021-12-06 19:59:51,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:51,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730098997] [2021-12-06 19:59:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:51,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730098997] [2021-12-06 19:59:51,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730098997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:51,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:51,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:59:51,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467224022] [2021-12-06 19:59:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:51,318 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 19:59:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 3 times [2021-12-06 19:59:51,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:51,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013362540] [2021-12-06 19:59:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:51,321 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:51,323 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:51,336 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:51,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:51,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:51,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:51,336 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:51,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:51,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:51,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-12-06 19:59:51,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:51,336 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:51,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,362 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:51,362 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:51,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,363 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-06 19:59:51,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:51,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:51,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-06 19:59:51,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,390 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-06 19:59:51,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:51,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:51,400 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:51,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:51,431 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:51,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:51,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:51,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:51,431 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:51,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:51,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:51,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-12-06 19:59:51,431 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:51,431 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:51,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,459 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:51,459 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:51,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,460 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-06 19:59:51,461 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:51,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:51,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:51,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:51,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:51,469 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:51,469 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:51,472 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:51,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-06 19:59:51,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,490 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-06 19:59:51,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:51,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:51,498 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:51,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:51,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:51,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:51,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:51,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:51,500 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:51,502 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:59:51,502 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 19:59:51,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,503 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-06 19:59:51,504 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:51,504 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:51,504 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:51,504 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-06 19:59:51,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-06 19:59:51,522 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-06 19:59:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,563 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 [2021-12-06 19:59:51,563 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 19:59:51,580 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 147 states and 221 transitions. Complement of second has 7 states. [2021-12-06 19:59:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-06 19:59:51,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-06 19:59:51,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,582 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-06 19:59:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,617 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 19:59:51,617 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 147 states and 221 transitions. Complement of second has 7 states. [2021-12-06 19:59:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-06 19:59:51,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-06 19:59:51,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,630 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,664 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 19:59:51,664 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,679 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 161 states and 250 transitions. Complement of second has 6 states. [2021-12-06 19:59:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-06 19:59:51,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-06 19:59:51,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-06 19:59:51,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 8 letters. [2021-12-06 19:59:51,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:51,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 250 transitions. [2021-12-06 19:59:51,683 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 32 [2021-12-06 19:59:51,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 119 states and 180 transitions. [2021-12-06 19:59:51,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-12-06 19:59:51,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-12-06 19:59:51,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 180 transitions. [2021-12-06 19:59:51,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:51,685 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 180 transitions. [2021-12-06 19:59:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 180 transitions. [2021-12-06 19:59:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2021-12-06 19:59:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 76 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2021-12-06 19:59:51,688 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 117 transitions. [2021-12-06 19:59:51,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:59:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:59:51,689 INFO L87 Difference]: Start difference. First operand 77 states and 117 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:51,695 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2021-12-06 19:59:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:59:51,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 79 transitions. [2021-12-06 19:59:51,696 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-06 19:59:51,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 51 states and 68 transitions. [2021-12-06 19:59:51,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-12-06 19:59:51,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-12-06 19:59:51,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 68 transitions. [2021-12-06 19:59:51,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:51,697 INFO L681 BuchiCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-12-06 19:59:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 68 transitions. [2021-12-06 19:59:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-12-06 19:59:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2021-12-06 19:59:51,699 INFO L704 BuchiCegarLoop]: Abstraction has 48 states and 65 transitions. [2021-12-06 19:59:51,699 INFO L587 BuchiCegarLoop]: Abstraction has 48 states and 65 transitions. [2021-12-06 19:59:51,699 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 19:59:51,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 65 transitions. [2021-12-06 19:59:51,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-06 19:59:51,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:51,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:51,700 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:51,700 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:51,700 INFO L791 eck$LassoCheckResult]: Stem: 1665#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1666#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1674#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1694#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1684#L12-2 assume !(0 == main_~i~0#1); 1672#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1673#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1692#L12 assume !(10 == main_~i~0#1); 1691#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1661#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1687#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1685#L12 [2021-12-06 19:59:51,700 INFO L793 eck$LassoCheckResult]: Loop: 1685#L12 assume !(10 == main_~i~0#1); 1683#L12-2 assume !(0 == main_~i~0#1); 1680#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1681#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1685#L12 [2021-12-06 19:59:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2021-12-06 19:59:51,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:51,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521200607] [2021-12-06 19:59:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:51,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521200607] [2021-12-06 19:59:51,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521200607] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:59:51,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966147049] [2021-12-06 19:59:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:51,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,718 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 19:59:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:51,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:59:51,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:59:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:51,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966147049] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:59:51,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:59:51,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-06 19:59:51,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677097261] [2021-12-06 19:59:51,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:59:51,765 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 19:59:51,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2021-12-06 19:59:51,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:51,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295522452] [2021-12-06 19:59:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:51,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:51,769 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:51,772 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:51,790 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:51,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:51,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:51,790 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:51,790 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:51,790 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,790 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:51,790 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:51,790 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-12-06 19:59:51,790 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:51,790 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:51,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:51,828 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:51,828 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:51,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,829 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-06 19:59:51,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:51,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:51,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:51,842 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: [] [2021-12-06 19:59:51,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-06 19:59:51,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,861 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-06 19:59:51,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:51,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:51,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:51,874 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: [] [2021-12-06 19:59:51,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-06 19:59:51,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,893 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-06 19:59:51,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:51,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:51,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-06 19:59:51,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:51,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:51,921 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:51,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-06 19:59:51,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:51,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:52,008 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:52,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-12-06 19:59:52,010 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:52,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:52,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:52,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:52,010 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:52,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:52,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:52,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-12-06 19:59:52,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:52,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:52,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,052 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:52,052 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:52,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,053 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-06 19:59:52,054 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:52,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:52,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:52,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:52,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:52,062 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:52,063 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:52,065 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:52,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-12-06 19:59:52,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,084 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-06 19:59:52,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:52,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:52,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:52,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:52,094 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-06 19:59:52,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:52,095 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-06 19:59:52,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:52,098 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:52,100 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:59:52,100 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 19:59:52,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,101 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-06 19:59:52,106 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:52,106 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:52,106 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:52,106 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2021-12-06 19:59:52,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-06 19:59:52,124 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:52,158 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 [2021-12-06 19:59:52,158 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,173 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 66 states and 90 transitions. Complement of second has 7 states. [2021-12-06 19:59:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-06 19:59:52,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-06 19:59:52,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,174 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:52,206 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 19:59:52,206 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,219 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 66 states and 90 transitions. Complement of second has 7 states. [2021-12-06 19:59:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-06 19:59:52,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-06 19:59:52,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,221 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:52,251 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 19:59:52,252 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,265 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 86 states and 124 transitions. Complement of second has 6 states. [2021-12-06 19:59:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-06 19:59:52,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-06 19:59:52,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2021-12-06 19:59:52,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2021-12-06 19:59:52,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 124 transitions. [2021-12-06 19:59:52,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-06 19:59:52,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 56 states and 76 transitions. [2021-12-06 19:59:52,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-06 19:59:52,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-06 19:59:52,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 76 transitions. [2021-12-06 19:59:52,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:52,269 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-12-06 19:59:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 76 transitions. [2021-12-06 19:59:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2021-12-06 19:59:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2021-12-06 19:59:52,271 INFO L704 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2021-12-06 19:59:52,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:59:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:59:52,272 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:52,287 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2021-12-06 19:59:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:59:52,287 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 105 transitions. [2021-12-06 19:59:52,288 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-12-06 19:59:52,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 72 states and 93 transitions. [2021-12-06 19:59:52,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-06 19:59:52,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-12-06 19:59:52,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 93 transitions. [2021-12-06 19:59:52,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:52,289 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 93 transitions. [2021-12-06 19:59:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 93 transitions. [2021-12-06 19:59:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2021-12-06 19:59:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 65 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2021-12-06 19:59:52,291 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 85 transitions. [2021-12-06 19:59:52,291 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 85 transitions. [2021-12-06 19:59:52,291 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 19:59:52,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 85 transitions. [2021-12-06 19:59:52,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-12-06 19:59:52,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:52,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:52,292 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:52,292 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:52,293 INFO L791 eck$LassoCheckResult]: Stem: 2294#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2295#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2303#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2308#L12 assume !(10 == main_~i~0#1); 2290#L12-2 assume !(0 == main_~i~0#1); 2291#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2322#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2304#L12 assume !(10 == main_~i~0#1); 2292#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2293#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2332#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2320#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2319#L12-2 [2021-12-06 19:59:52,293 INFO L793 eck$LassoCheckResult]: Loop: 2319#L12-2 assume !(0 == main_~i~0#1); 2355#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2354#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2318#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2319#L12-2 [2021-12-06 19:59:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2021-12-06 19:59:52,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:52,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432946960] [2021-12-06 19:59:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:52,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 19:59:52,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:52,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432946960] [2021-12-06 19:59:52,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432946960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:52,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:52,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:59:52,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685843011] [2021-12-06 19:59:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:52,313 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 19:59:52,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2021-12-06 19:59:52,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:52,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603978645] [2021-12-06 19:59:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:52,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:52,316 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:52,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:52,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-12-06 19:59:52,334 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:52,334 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:52,334 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:52,334 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:52,334 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:52,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:52,334 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:52,334 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-12-06 19:59:52,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:52,335 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:52,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,369 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:52,370 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:52,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,371 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-06 19:59:52,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:52,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:52,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:52,384 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:52,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:52,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,403 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-06 19:59:52,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:52,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:52,417 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:52,417 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:52,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:52,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,436 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-06 19:59:52,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:52,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:52,450 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:52,450 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:52,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-12-06 19:59:52,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,468 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-06 19:59:52,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:52,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:52,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-12-06 19:59:52,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,496 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-06 19:59:52,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:52,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:52,589 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:52,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:52,591 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:52,591 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:52,591 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:52,591 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:52,591 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:52,591 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,591 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:52,591 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:52,591 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-12-06 19:59:52,591 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:52,591 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:52,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,624 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:52,624 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:52,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,625 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-06 19:59:52,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:52,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:52,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:52,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:52,633 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-06 19:59:52,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:52,634 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-06 19:59:52,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:52,636 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:52,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:52,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,654 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-06 19:59:52,655 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:52,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:52,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:52,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:52,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:52,663 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:52,663 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:52,666 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:52,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-12-06 19:59:52,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,684 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-06 19:59:52,685 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:52,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:52,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:52,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:52,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:52,693 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:52,693 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:52,695 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:52,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-06 19:59:52,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,714 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-06 19:59:52,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:52,722 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:52,722 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:52,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:52,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:52,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:52,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:52,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:52,725 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:52,727 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:59:52,727 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 19:59:52,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,728 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-06 19:59:52,728 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:52,729 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:52,729 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:52,729 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-06 19:59:52,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-12-06 19:59:52,747 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:52,778 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 [2021-12-06 19:59:52,778 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,793 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 160 states and 209 transitions. Complement of second has 7 states. [2021-12-06 19:59:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-06 19:59:52,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-06 19:59:52,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-06 19:59:52,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-06 19:59:52,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:52,794 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 209 transitions. [2021-12-06 19:59:52,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-12-06 19:59:52,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 126 states and 161 transitions. [2021-12-06 19:59:52,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-12-06 19:59:52,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-12-06 19:59:52,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 161 transitions. [2021-12-06 19:59:52,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:52,798 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 161 transitions. [2021-12-06 19:59:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 161 transitions. [2021-12-06 19:59:52,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2021-12-06 19:59:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 119 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-12-06 19:59:52,802 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-12-06 19:59:52,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:59:52,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:59:52,803 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:52,814 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2021-12-06 19:59:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:59:52,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 174 transitions. [2021-12-06 19:59:52,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-12-06 19:59:52,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 138 states and 174 transitions. [2021-12-06 19:59:52,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-12-06 19:59:52,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-12-06 19:59:52,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 138 states and 174 transitions. [2021-12-06 19:59:52,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:52,817 INFO L681 BuchiCegarLoop]: Abstraction has 138 states and 174 transitions. [2021-12-06 19:59:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states and 174 transitions. [2021-12-06 19:59:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2021-12-06 19:59:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 116 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2021-12-06 19:59:52,821 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 147 transitions. [2021-12-06 19:59:52,821 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 147 transitions. [2021-12-06 19:59:52,821 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-06 19:59:52,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 147 transitions. [2021-12-06 19:59:52,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-12-06 19:59:52,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:52,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:52,823 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2021-12-06 19:59:52,823 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-06 19:59:52,823 INFO L791 eck$LassoCheckResult]: Stem: 2854#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2855#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2859#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2867#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2846#L12-2 assume !(0 == main_~i~0#1); 2847#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2961#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2862#L12 assume !(10 == main_~i~0#1); 2848#L12-2 assume !(0 == main_~i~0#1); 2849#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2858#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2960#L12 assume !(10 == main_~i~0#1); 2959#L12-2 assume !(0 == main_~i~0#1); 2958#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2956#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2955#L12 assume !(10 == main_~i~0#1); 2954#L12-2 assume !(0 == main_~i~0#1); 2952#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2953#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2957#L12 assume !(10 == main_~i~0#1); 2861#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2921#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2919#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2918#L12 assume !(10 == main_~i~0#1); 2896#L12-2 assume !(0 == main_~i~0#1); 2898#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2897#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2895#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2869#L12-2 [2021-12-06 19:59:52,823 INFO L793 eck$LassoCheckResult]: Loop: 2869#L12-2 assume !(0 == main_~i~0#1); 2864#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2865#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2893#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2869#L12-2 [2021-12-06 19:59:52,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2021-12-06 19:59:52,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:52,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386953278] [2021-12-06 19:59:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:52,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 19:59:52,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:52,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386953278] [2021-12-06 19:59:52,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386953278] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:59:52,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758920092] [2021-12-06 19:59:52,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:59:52,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:52,867 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:52,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-12-06 19:59:52,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 19:59:52,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:59:52,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:52,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 19:59:52,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:59:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 19:59:52,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758920092] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:59:52,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:59:52,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2021-12-06 19:59:52,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327182930] [2021-12-06 19:59:52,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:59:52,949 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 19:59:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2021-12-06 19:59:52,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:52,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263406171] [2021-12-06 19:59:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:52,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:52,953 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:52,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:52,971 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:52,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:52,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:52,971 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:52,971 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:52,972 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:52,972 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:52,972 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:52,972 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2021-12-06 19:59:52,972 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:52,972 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:52,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:52,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:53,007 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:53,007 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:53,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:53,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,008 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-06 19:59:53,009 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:53,009 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:53,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:53,021 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:53,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-12-06 19:59:53,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,040 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-06 19:59:53,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:53,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:53,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-06 19:59:53,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:53,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,082 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-06 19:59:53,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:53,083 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:53,184 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:53,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-12-06 19:59:53,186 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:53,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:53,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:53,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:53,186 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:53,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:53,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:53,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:53,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2021-12-06 19:59:53,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:53,186 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:53,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:53,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:53,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:53,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:53,216 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:53,216 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:53,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:53,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,217 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-06 19:59:53,218 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:53,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:53,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:53,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:53,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:53,226 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:53,226 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:53,229 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:53,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-12-06 19:59:53,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:53,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,247 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-06 19:59:53,248 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:53,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:53,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:53,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:53,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:53,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:53,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:53,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:53,258 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:53,259 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-06 19:59:53,259 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 19:59:53,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,260 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-06 19:59:53,261 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:53,261 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:53,261 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:53,261 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-06 19:59:53,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-12-06 19:59:53,279 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:53,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:53,329 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 [2021-12-06 19:59:53,329 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,343 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 164 states and 204 transitions. Complement of second has 7 states. [2021-12-06 19:59:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-06 19:59:53,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2021-12-06 19:59:53,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:53,344 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:53,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-12-06 19:59:53,397 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 19:59:53,398 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,413 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 198 states and 239 transitions. Complement of second has 7 states. [2021-12-06 19:59:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-06 19:59:53,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2021-12-06 19:59:53,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:53,414 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:53,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-12-06 19:59:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:53,463 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 19:59:53,463 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,478 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 176 states and 219 transitions. Complement of second has 8 states. [2021-12-06 19:59:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-06 19:59:53,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2021-12-06 19:59:53,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:53,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2021-12-06 19:59:53,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:53,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2021-12-06 19:59:53,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:53,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 176 states and 219 transitions. [2021-12-06 19:59:53,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2021-12-06 19:59:53,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 176 states to 121 states and 151 transitions. [2021-12-06 19:59:53,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-06 19:59:53,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-06 19:59:53,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 151 transitions. [2021-12-06 19:59:53,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:53,483 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 151 transitions. [2021-12-06 19:59:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 151 transitions. [2021-12-06 19:59:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2021-12-06 19:59:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.25) internal successors, (95), 75 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2021-12-06 19:59:53,486 INFO L704 BuchiCegarLoop]: Abstraction has 76 states and 95 transitions. [2021-12-06 19:59:53,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:53,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:59:53,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:59:53,486 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:53,532 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2021-12-06 19:59:53,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:59:53,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 194 transitions. [2021-12-06 19:59:53,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2021-12-06 19:59:53,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 153 states and 188 transitions. [2021-12-06 19:59:53,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-06 19:59:53,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-06 19:59:53,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 188 transitions. [2021-12-06 19:59:53,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:53,535 INFO L681 BuchiCegarLoop]: Abstraction has 153 states and 188 transitions. [2021-12-06 19:59:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states and 188 transitions. [2021-12-06 19:59:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 104. [2021-12-06 19:59:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-12-06 19:59:53,537 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-12-06 19:59:53,537 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-12-06 19:59:53,537 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-06 19:59:53,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 126 transitions. [2021-12-06 19:59:53,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-12-06 19:59:53,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:53,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:53,538 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-06 19:59:53,538 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2021-12-06 19:59:53,538 INFO L791 eck$LassoCheckResult]: Stem: 4245#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4246#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4240#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 assume !(10 == main_~i~0#1); 4265#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4263#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4255#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4256#L12 [2021-12-06 19:59:53,539 INFO L793 eck$LassoCheckResult]: Loop: 4256#L12 assume !(10 == main_~i~0#1); 4284#L12-2 assume !(0 == main_~i~0#1); 4283#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4282#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4281#L12 assume !(10 == main_~i~0#1); 4280#L12-2 assume !(0 == main_~i~0#1); 4279#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4278#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4277#L12 assume !(10 == main_~i~0#1); 4276#L12-2 assume !(0 == main_~i~0#1); 4275#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4274#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4273#L12 assume !(10 == main_~i~0#1); 4272#L12-2 assume !(0 == main_~i~0#1); 4271#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4270#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4269#L12 assume !(10 == main_~i~0#1); 4259#L12-2 assume !(0 == main_~i~0#1); 4262#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4261#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4258#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4260#L12-2 assume !(0 == main_~i~0#1); 4324#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4323#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4322#L12 assume !(10 == main_~i~0#1); 4321#L12-2 assume !(0 == main_~i~0#1); 4320#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4319#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4318#L12 assume !(10 == main_~i~0#1); 4317#L12-2 assume !(0 == main_~i~0#1); 4316#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4315#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4314#L12 assume !(10 == main_~i~0#1); 4313#L12-2 assume !(0 == main_~i~0#1); 4312#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4311#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4309#L12 assume !(10 == main_~i~0#1); 4308#L12-2 assume !(0 == main_~i~0#1); 4306#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4307#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 assume !(10 == main_~i~0#1); 4265#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4263#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4255#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4256#L12 [2021-12-06 19:59:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 2 times [2021-12-06 19:59:53,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:53,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892513507] [2021-12-06 19:59:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:53,542 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:53,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1466490324, now seen corresponding path program 1 times [2021-12-06 19:59:53,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:53,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616990958] [2021-12-06 19:59:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 19:59:53,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:53,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616990958] [2021-12-06 19:59:53,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616990958] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:59:53,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295691468] [2021-12-06 19:59:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,589 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-12-06 19:59:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 19:59:53,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:59:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 19:59:53,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295691468] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:59:53,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:59:53,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-12-06 19:59:53,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554250853] [2021-12-06 19:59:53,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:59:53,701 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 19:59:53,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:53,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:59:53,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:59:53,702 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. cyclomatic complexity: 26 Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:53,738 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2021-12-06 19:59:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:59:53,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 198 states and 243 transitions. [2021-12-06 19:59:53,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 72 [2021-12-06 19:59:53,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 198 states to 173 states and 213 transitions. [2021-12-06 19:59:53,740 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-06 19:59:53,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-06 19:59:53,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 213 transitions. [2021-12-06 19:59:53,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:53,741 INFO L681 BuchiCegarLoop]: Abstraction has 173 states and 213 transitions. [2021-12-06 19:59:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 213 transitions. [2021-12-06 19:59:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2021-12-06 19:59:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 164 states have (on average 1.225609756097561) internal successors, (201), 163 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2021-12-06 19:59:53,743 INFO L704 BuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-12-06 19:59:53,743 INFO L587 BuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-12-06 19:59:53,743 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-06 19:59:53,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 201 transitions. [2021-12-06 19:59:53,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-12-06 19:59:53,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:53,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:53,745 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-06 19:59:53,745 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-12-06 19:59:53,745 INFO L791 eck$LassoCheckResult]: Stem: 4815#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4816#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4817#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4819#L12 assume !(10 == main_~i~0#1); 4859#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4858#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4829#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4830#L12 [2021-12-06 19:59:53,745 INFO L793 eck$LassoCheckResult]: Loop: 4830#L12 assume !(10 == main_~i~0#1); 4851#L12-2 assume !(0 == main_~i~0#1); 4850#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4849#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4848#L12 assume !(10 == main_~i~0#1); 4847#L12-2 assume !(0 == main_~i~0#1); 4846#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4845#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4844#L12 assume !(10 == main_~i~0#1); 4843#L12-2 assume !(0 == main_~i~0#1); 4842#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4841#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4840#L12 assume !(10 == main_~i~0#1); 4839#L12-2 assume !(0 == main_~i~0#1); 4838#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4837#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4836#L12 assume !(10 == main_~i~0#1); 4833#L12-2 assume !(0 == main_~i~0#1); 4835#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4834#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4832#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4812#L12-2 assume !(0 == main_~i~0#1); 4813#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4820#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4821#L12 assume !(10 == main_~i~0#1); 4826#L12-2 assume !(0 == main_~i~0#1); 4975#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4974#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4973#L12 assume !(10 == main_~i~0#1); 4972#L12-2 assume !(0 == main_~i~0#1); 4971#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4970#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4969#L12 assume !(10 == main_~i~0#1); 4968#L12-2 assume !(0 == main_~i~0#1); 4967#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4966#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4965#L12 assume !(10 == main_~i~0#1); 4964#L12-2 assume !(0 == main_~i~0#1); 4963#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4962#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4961#L12 assume !(10 == main_~i~0#1); 4960#L12-2 assume !(0 == main_~i~0#1); 4959#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4958#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4957#L12 assume !(10 == main_~i~0#1); 4956#L12-2 assume !(0 == main_~i~0#1); 4955#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4954#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4953#L12 assume !(10 == main_~i~0#1); 4952#L12-2 assume !(0 == main_~i~0#1); 4951#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4950#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4949#L12 assume !(10 == main_~i~0#1); 4948#L12-2 assume !(0 == main_~i~0#1); 4947#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4946#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4866#L12 assume !(10 == main_~i~0#1); 4945#L12-2 assume !(0 == main_~i~0#1); 4910#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4865#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4819#L12 assume !(10 == main_~i~0#1); 4859#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4858#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4829#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4830#L12 [2021-12-06 19:59:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 3 times [2021-12-06 19:59:53,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:53,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518974610] [2021-12-06 19:59:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:53,748 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:53,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash 726843037, now seen corresponding path program 2 times [2021-12-06 19:59:53,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:53,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61138283] [2021-12-06 19:59:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:53,760 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:53,771 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:53,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1110135673, now seen corresponding path program 4 times [2021-12-06 19:59:53,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:53,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074348851] [2021-12-06 19:59:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:53,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-06 19:59:53,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:53,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074348851] [2021-12-06 19:59:53,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074348851] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:59:53,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537979637] [2021-12-06 19:59:53,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:59:53,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:59:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:53,819 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:59:53,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-12-06 19:59:53,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:59:53,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:59:53,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:59:53,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-06 19:59:53,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:59:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-06 19:59:54,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537979637] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:59:54,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:59:54,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-12-06 19:59:54,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889523810] [2021-12-06 19:59:54,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:59:54,192 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:54,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:54,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:54,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:54,193 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:59:54,193 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,193 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:54,193 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:54,193 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-12-06 19:59:54,193 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:54,193 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:54,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,217 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:54,217 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:59:54,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,218 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-12-06 19:59:54,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:54,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:54,227 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:54,227 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:54,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-12-06 19:59:54,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,245 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-12-06 19:59:54,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:54,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:54,258 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:59:54,258 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:59:54,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-12-06 19:59:54,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,277 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-12-06 19:59:54,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:59:54,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:54,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-12-06 19:59:54,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,309 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-06 19:59:54,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:59:54,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:59:54,318 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:59:54,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-12-06 19:59:54,336 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:59:54,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:59:54,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:59:54,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:59:54,336 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:59:54,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:59:54,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:59:54,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-12-06 19:59:54,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:59:54,336 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:59:54,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:59:54,359 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:59:54,359 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:59:54,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,360 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-12-06 19:59:54,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:54,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:54,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:54,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:54,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:54,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:54,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:54,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:54,370 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:54,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-12-06 19:59:54,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,388 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-12-06 19:59:54,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:54,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:54,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:54,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:54,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:54,398 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 19:59:54,398 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 19:59:54,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:59:54,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-12-06 19:59:54,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,419 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-12-06 19:59:54,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 19:59:54,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:59:54,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:59:54,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:59:54,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:59:54,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:59:54,428 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:59:54,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:59:54,429 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:59:54,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:59:54,431 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 19:59:54,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:59:54,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:59:54,432 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:59:54,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-12-06 19:59:54,433 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:59:54,433 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:59:54,433 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:59:54,433 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-06 19:59:54,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2021-12-06 19:59:54,451 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:59:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:54,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:54,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:59:54,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 19:59:54,561 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-06 19:59:54,561 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:54,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2021-12-06 19:59:54,618 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 489 states and 580 transitions. Complement of second has 17 states. [2021-12-06 19:59:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2021-12-06 19:59:54,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-06 19:59:54,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:54,619 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:54,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:54,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:54,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:54,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:59:54,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 19:59:54,747 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-06 19:59:54,747 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:54,898 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 784 states and 937 transitions. Complement of second has 31 states. [2021-12-06 19:59:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 67 transitions. [2021-12-06 19:59:54,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 67 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-06 19:59:54,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:54,899 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:54,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:54,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:54,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:59:54,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 19:59:55,020 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 9 loop predicates [2021-12-06 19:59:55,020 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,165 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1329 states and 1557 transitions. Complement of second has 174 states. [2021-12-06 19:59:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 76 transitions. [2021-12-06 19:59:55,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 76 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-06 19:59:55,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:55,170 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 19:59:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:55,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:59:55,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:55,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:59:55,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:59:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 19:59:55,311 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-06 19:59:55,311 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,463 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1639 states and 1887 transitions. Complement of second has 195 states. [2021-12-06 19:59:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-12-06 19:59:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 78 transitions. [2021-12-06 19:59:55,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-06 19:59:55,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:55,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 71 letters. Loop has 64 letters. [2021-12-06 19:59:55,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:55,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 128 letters. [2021-12-06 19:59:55,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:59:55,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1639 states and 1887 transitions. [2021-12-06 19:59:55,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 307 [2021-12-06 19:59:55,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1639 states to 522 states and 614 transitions. [2021-12-06 19:59:55,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-06 19:59:55,485 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-12-06 19:59:55,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 614 transitions. [2021-12-06 19:59:55,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:55,485 INFO L681 BuchiCegarLoop]: Abstraction has 522 states and 614 transitions. [2021-12-06 19:59:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 614 transitions. [2021-12-06 19:59:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 163. [2021-12-06 19:59:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 162 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-12-06 19:59:55,489 INFO L704 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-12-06 19:59:55,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:59:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:59:55,489 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:55,522 INFO L93 Difference]: Finished difference Result 398 states and 454 transitions. [2021-12-06 19:59:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:59:55,522 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 454 transitions. [2021-12-06 19:59:55,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 195 [2021-12-06 19:59:55,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 298 states and 353 transitions. [2021-12-06 19:59:55,526 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2021-12-06 19:59:55,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2021-12-06 19:59:55,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 298 states and 353 transitions. [2021-12-06 19:59:55,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:55,527 INFO L681 BuchiCegarLoop]: Abstraction has 298 states and 353 transitions. [2021-12-06 19:59:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states and 353 transitions. [2021-12-06 19:59:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 152. [2021-12-06 19:59:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 151 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2021-12-06 19:59:55,531 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 183 transitions. [2021-12-06 19:59:55,531 INFO L587 BuchiCegarLoop]: Abstraction has 152 states and 183 transitions. [2021-12-06 19:59:55,531 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-06 19:59:55,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 183 transitions. [2021-12-06 19:59:55,531 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-12-06 19:59:55,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:55,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:55,532 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-06 19:59:55,533 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [21, 20, 19, 11, 10, 2, 1] [2021-12-06 19:59:55,533 INFO L791 eck$LassoCheckResult]: Stem: 11594#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11595#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11599#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11609#L12 assume !(10 == main_~i~0#1); 11612#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11610#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11603#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11604#L12 [2021-12-06 19:59:55,533 INFO L793 eck$LassoCheckResult]: Loop: 11604#L12 assume !(10 == main_~i~0#1); 11692#L12-2 assume !(0 == main_~i~0#1); 11691#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11690#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11689#L12 assume !(10 == main_~i~0#1); 11688#L12-2 assume !(0 == main_~i~0#1); 11687#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11686#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11685#L12 assume !(10 == main_~i~0#1); 11684#L12-2 assume !(0 == main_~i~0#1); 11683#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11682#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11681#L12 assume !(10 == main_~i~0#1); 11678#L12-2 assume !(0 == main_~i~0#1); 11680#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11679#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11677#L12 assume !(10 == main_~i~0#1); 11586#L12-2 assume !(0 == main_~i~0#1); 11587#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11590#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11591#L12 assume !(10 == main_~i~0#1); 11676#L12-2 assume !(0 == main_~i~0#1); 11675#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11674#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11673#L12 assume !(10 == main_~i~0#1); 11672#L12-2 assume !(0 == main_~i~0#1); 11671#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11670#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11669#L12 assume !(10 == main_~i~0#1); 11668#L12-2 assume !(0 == main_~i~0#1); 11667#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11666#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11665#L12 assume !(10 == main_~i~0#1); 11664#L12-2 assume !(0 == main_~i~0#1); 11663#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11662#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11661#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11660#L12-2 assume !(0 == main_~i~0#1); 11659#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11658#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11657#L12 assume !(10 == main_~i~0#1); 11656#L12-2 assume !(0 == main_~i~0#1); 11655#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11654#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11653#L12 assume !(10 == main_~i~0#1); 11652#L12-2 assume !(0 == main_~i~0#1); 11651#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11650#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11649#L12 assume !(10 == main_~i~0#1); 11648#L12-2 assume !(0 == main_~i~0#1); 11647#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11646#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11645#L12 assume !(10 == main_~i~0#1); 11644#L12-2 assume !(0 == main_~i~0#1); 11643#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11642#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11641#L12 assume !(10 == main_~i~0#1); 11640#L12-2 assume !(0 == main_~i~0#1); 11639#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11638#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11637#L12 assume !(10 == main_~i~0#1); 11636#L12-2 assume !(0 == main_~i~0#1); 11635#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11634#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11633#L12 assume !(10 == main_~i~0#1); 11632#L12-2 assume !(0 == main_~i~0#1); 11631#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11630#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11629#L12 assume !(10 == main_~i~0#1); 11628#L12-2 assume !(0 == main_~i~0#1); 11627#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11626#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11622#L12 assume !(10 == main_~i~0#1); 11624#L12-2 assume !(0 == main_~i~0#1); 11623#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11621#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11620#L12 assume !(10 == main_~i~0#1); 11618#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11619#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11694#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11605#L12 assume !(10 == main_~i~0#1); 11615#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11610#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11603#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11604#L12 [2021-12-06 19:59:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 4 times [2021-12-06 19:59:55,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:55,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419541401] [2021-12-06 19:59:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:55,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,537 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,539 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1840948782, now seen corresponding path program 3 times [2021-12-06 19:59:55,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:55,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871384167] [2021-12-06 19:59:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:55,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-12-06 19:59:55,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:55,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871384167] [2021-12-06 19:59:55,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871384167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:55,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:55,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:59:55,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978775633] [2021-12-06 19:59:55,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:55,580 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 19:59:55,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:59:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:59:55,580 INFO L87 Difference]: Start difference. First operand 152 states and 183 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:55,592 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2021-12-06 19:59:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:59:55,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 181 transitions. [2021-12-06 19:59:55,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-06 19:59:55,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 144 states and 170 transitions. [2021-12-06 19:59:55,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-06 19:59:55,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-12-06 19:59:55,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 170 transitions. [2021-12-06 19:59:55,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:59:55,595 INFO L681 BuchiCegarLoop]: Abstraction has 144 states and 170 transitions. [2021-12-06 19:59:55,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 170 transitions. [2021-12-06 19:59:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2021-12-06 19:59:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:59:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2021-12-06 19:59:55,596 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2021-12-06 19:59:55,596 INFO L587 BuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2021-12-06 19:59:55,596 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-06 19:59:55,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 117 transitions. [2021-12-06 19:59:55,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-06 19:59:55,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:59:55,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:59:55,598 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 5, 4, 1, 1, 1] [2021-12-06 19:59:55,598 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-06 19:59:55,598 INFO L791 eck$LassoCheckResult]: Stem: 11904#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11905#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11917#L12 assume !(10 == main_~i~0#1); 11918#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11919#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11900#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11901#L12 assume !(10 == main_~i~0#1); 11953#L12-2 assume !(0 == main_~i~0#1); 11952#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11951#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11950#L12 assume !(10 == main_~i~0#1); 11949#L12-2 assume !(0 == main_~i~0#1); 11948#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11947#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11946#L12 assume !(10 == main_~i~0#1); 11945#L12-2 assume !(0 == main_~i~0#1); 11944#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11943#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11942#L12 assume !(10 == main_~i~0#1); 11938#L12-2 assume !(0 == main_~i~0#1); 11941#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11940#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11937#L12 assume !(10 == main_~i~0#1); 11920#L12-2 [2021-12-06 19:59:55,598 INFO L793 eck$LassoCheckResult]: Loop: 11920#L12-2 assume !(0 == main_~i~0#1); 11913#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11914#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11939#L12 assume !(10 == main_~i~0#1); 11936#L12-2 assume !(0 == main_~i~0#1); 11935#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11934#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11933#L12 assume !(10 == main_~i~0#1); 11932#L12-2 assume !(0 == main_~i~0#1); 11931#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11930#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11929#L12 assume !(10 == main_~i~0#1); 11928#L12-2 assume !(0 == main_~i~0#1); 11927#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11926#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11925#L12 assume !(10 == main_~i~0#1); 11924#L12-2 assume !(0 == main_~i~0#1); 11923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11922#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11921#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11897#L12-2 assume !(0 == main_~i~0#1); 11898#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11902#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11903#L12 assume !(10 == main_~i~0#1); 11995#L12-2 assume !(0 == main_~i~0#1); 11994#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11993#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11992#L12 assume !(10 == main_~i~0#1); 11991#L12-2 assume !(0 == main_~i~0#1); 11990#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11989#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11988#L12 assume !(10 == main_~i~0#1); 11987#L12-2 assume !(0 == main_~i~0#1); 11986#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11985#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11984#L12 assume !(10 == main_~i~0#1); 11983#L12-2 assume !(0 == main_~i~0#1); 11982#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11981#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11980#L12 assume !(10 == main_~i~0#1); 11979#L12-2 assume !(0 == main_~i~0#1); 11978#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11977#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11976#L12 assume !(10 == main_~i~0#1); 11975#L12-2 assume !(0 == main_~i~0#1); 11974#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11973#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11972#L12 assume !(10 == main_~i~0#1); 11971#L12-2 assume !(0 == main_~i~0#1); 11970#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11969#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11968#L12 assume !(10 == main_~i~0#1); 11967#L12-2 assume !(0 == main_~i~0#1); 11966#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11965#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11962#L12 assume !(10 == main_~i~0#1); 11964#L12-2 assume !(0 == main_~i~0#1); 11963#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11961#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11960#L12 assume !(10 == main_~i~0#1); 11910#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11959#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11956#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11954#L12 assume !(10 == main_~i~0#1); 11953#L12-2 assume !(0 == main_~i~0#1); 11952#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11951#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11950#L12 assume !(10 == main_~i~0#1); 11949#L12-2 assume !(0 == main_~i~0#1); 11948#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11947#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11946#L12 assume !(10 == main_~i~0#1); 11945#L12-2 assume !(0 == main_~i~0#1); 11944#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11943#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11942#L12 assume !(10 == main_~i~0#1); 11938#L12-2 assume !(0 == main_~i~0#1); 11941#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11940#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11937#L12 assume !(10 == main_~i~0#1); 11920#L12-2 [2021-12-06 19:59:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash 781927031, now seen corresponding path program 1 times [2021-12-06 19:59:55,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:55,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812673278] [2021-12-06 19:59:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:55,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,602 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,605 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash 921517193, now seen corresponding path program 4 times [2021-12-06 19:59:55,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:55,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007890610] [2021-12-06 19:59:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:55,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,614 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash 933372671, now seen corresponding path program 5 times [2021-12-06 19:59:55,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:55,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242440843] [2021-12-06 19:59:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:55,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,642 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:59:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:59:55,656 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:59:55,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 07:59:55 BoogieIcfgContainer [2021-12-06 19:59:55,992 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 19:59:55,992 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:59:55,992 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:59:55,993 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:59:55,993 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:59:48" (3/4) ... [2021-12-06 19:59:55,995 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-06 19:59:56,026 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:59:56,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:59:56,027 INFO L158 Benchmark]: Toolchain (without parser) took 7561.56ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 70.8MB in the beginning and 46.9MB in the end (delta: 23.9MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2021-12-06 19:59:56,027 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:59:56,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 130.95ms. Allocated memory is still 111.1MB. Free memory was 70.6MB in the beginning and 62.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 19:59:56,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.43ms. Allocated memory is still 111.1MB. Free memory was 62.0MB in the beginning and 60.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:59:56,028 INFO L158 Benchmark]: Boogie Preprocessor took 16.48ms. Allocated memory is still 111.1MB. Free memory was 60.5MB in the beginning and 59.6MB in the end (delta: 886.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:59:56,028 INFO L158 Benchmark]: RCFGBuilder took 178.16ms. Allocated memory is still 111.1MB. Free memory was 59.6MB in the beginning and 86.8MB in the end (delta: -27.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-06 19:59:56,028 INFO L158 Benchmark]: BuchiAutomizer took 7169.03ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 86.3MB in the beginning and 51.1MB in the end (delta: 35.2MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2021-12-06 19:59:56,028 INFO L158 Benchmark]: Witness Printer took 33.98ms. Allocated memory is still 134.2MB. Free memory was 51.1MB in the beginning and 46.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 19:59:56,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 130.95ms. Allocated memory is still 111.1MB. Free memory was 70.6MB in the beginning and 62.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.43ms. Allocated memory is still 111.1MB. Free memory was 62.0MB in the beginning and 60.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.48ms. Allocated memory is still 111.1MB. Free memory was 60.5MB in the beginning and 59.6MB in the end (delta: 886.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 178.16ms. Allocated memory is still 111.1MB. Free memory was 59.6MB in the beginning and 86.8MB in the end (delta: -27.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 7169.03ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 86.3MB in the beginning and 51.1MB in the end (delta: 35.2MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. * Witness Printer took 33.98ms. Allocated memory is still 134.2MB. Free memory was 51.1MB in the beginning and 46.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 18 terminating modules (9 trivial, 5 deterministic, 4 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 16 locations. 9 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 101 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.1s and 12 iterations. TraceHistogramMax:21. Analysis of lassos took 4.8s. Construction of modules took 0.3s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 18. Automata minimization 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 766 StatesRemovedByMinimization, 18 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 164 states and ocurred in iteration 9. Nontrivial modules had stage [5, 0, 3, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 220/480 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 459 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 441 mSDsluCounter, 235 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 921 IncrementalHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 204 mSDtfsCounter, 921 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax174 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf91 smp95 dnf122 smp94 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=5, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@445baed0=0, up=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) Loop: [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-06 19:59:56,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-12-06 19:59:56,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-12-06 19:59:56,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-12-06 19:59:56,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 19:59:56,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61aca31d-4ab4-4dc8-842c-ac97811e42b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)