./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF --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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:58:36,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:58:36,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:58:36,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:58:36,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:58:36,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:58:36,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:58:36,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:58:36,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:58:36,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:58:36,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:58:36,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:58:36,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:58:36,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:58:36,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:58:36,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:58:36,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:58:36,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:58:36,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:58:36,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:58:36,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:58:36,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:58:36,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:58:36,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:58:36,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:58:36,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:58:36,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:58:36,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:58:36,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:58:36,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:58:36,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:58:36,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:58:36,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:58:36,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:58:36,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:58:36,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:58:36,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:58:36,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:58:36,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:58:36,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:58:36,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:58:36,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 06:58:36,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:58:36,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:58:36,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:58:36,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:58:36,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:58:36,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:58:36,971 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:58:36,971 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:58:36,971 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:58:36,972 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:58:36,973 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:58:36,974 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:58:36,974 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:58:36,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:58:36,975 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:58:36,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:58:36,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:58:36,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:58:36,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:58:36,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:58:36,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:58:36,978 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:58:36,978 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:58:36,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:58:36,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:58:36,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:58:36,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:58:36,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:58:36,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:58:36,984 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:58:36,985 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_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2021-11-20 06:58:37,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:58:37,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:58:37,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:58:37,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:58:37,355 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:58:37,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-11-20 06:58:37,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/data/f7b261fb5/97936fda60e5487aa88cc74b4b285482/FLAG1bb9d0e15 [2021-11-20 06:58:37,961 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:58:37,961 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-11-20 06:58:37,968 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/data/f7b261fb5/97936fda60e5487aa88cc74b4b285482/FLAG1bb9d0e15 [2021-11-20 06:58:38,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/data/f7b261fb5/97936fda60e5487aa88cc74b4b285482 [2021-11-20 06:58:38,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:58:38,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:58:38,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:58:38,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:58:38,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:58:38,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0652c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38, skipping insertion in model container [2021-11-20 06:58:38,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:58:38,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:58:38,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:58:38,603 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:58:38,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:58:38,642 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:58:38,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38 WrapperNode [2021-11-20 06:58:38,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:58:38,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:58:38,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:58:38,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:58:38,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,694 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2021-11-20 06:58:38,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:58:38,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:58:38,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:58:38,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:58:38,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:58:38,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:58:38,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:58:38,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:58:38,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (1/1) ... [2021-11-20 06:58:38,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:38,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:38,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:38,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:58:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:58:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:58:38,895 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:58:38,897 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:58:38,977 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:58:38,986 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:58:38,987 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:58:38,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:58:38 BoogieIcfgContainer [2021-11-20 06:58:38,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:58:38,991 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:58:38,991 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:58:38,995 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:58:38,995 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:58:38,996 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:58:38" (1/3) ... [2021-11-20 06:58:38,997 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2450b20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:58:38, skipping insertion in model container [2021-11-20 06:58:38,997 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:58:38,997 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:38" (2/3) ... [2021-11-20 06:58:38,998 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2450b20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:58:38, skipping insertion in model container [2021-11-20 06:58:38,998 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:58:38,998 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:58:38" (3/3) ... [2021-11-20 06:58:39,000 INFO L388 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-11-20 06:58:39,054 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:58:39,054 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:58:39,054 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:58:39,054 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:58:39,054 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:58:39,055 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:58:39,055 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:58:39,055 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:58:39,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-11-20 06:58:39,090 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:58:39,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:58:39,090 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:58:39,097 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:58:39,097 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:58:39,097 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:58:39,098 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2021-11-20 06:58:39,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:58:39,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:58:39,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:58:39,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:58:39,100 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:58:39,107 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_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 6#L18-2true [2021-11-20 06:58:39,108 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~y~0#1 >= 0); 10#L19true assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 3#L19-2true main_~x~0#1 := 1 + main_~x~0#1; 6#L18-2true [2021-11-20 06:58:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 06:58:39,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:39,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568711139] [2021-11-20 06:58:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:39,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:39,219 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:39,240 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:39,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2021-11-20 06:58:39,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:39,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615687320] [2021-11-20 06:58:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:39,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:39,261 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:39,274 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2021-11-20 06:58:39,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:39,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985643274] [2021-11-20 06:58:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:39,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:39,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:39,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985643274] [2021-11-20 06:58:39,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985643274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:39,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:39,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:58:39,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806580237] [2021-11-20 06:58:39,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:39,484 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:39,485 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:39,485 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:39,486 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:39,486 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:58:39,486 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:39,486 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:39,486 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:39,487 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2021-11-20 06:58:39,487 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:39,487 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:39,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:39,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:39,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:39,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:39,630 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:39,631 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:58:39,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:39,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:39,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:39,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:39,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:39,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:58:39,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:39,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:39,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:39,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:39,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:39,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:39,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:58:39,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:39,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=51} Honda state: {ULTIMATE.start_main_~x~0#1=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [14, 1, 0] Nus: [0, 1] [2021-11-20 06:58:39,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:39,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:39,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:39,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:39,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:39,891 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:39,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:58:39,921 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:39,921 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: [] [2021-11-20 06:58:39,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:39,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:39,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:39,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:39,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 06:58:39,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:39,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:39,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:39,984 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: [] [2021-11-20 06:58:40,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:40,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:40,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:40,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 06:58:40,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:40,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:40,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:40,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:40,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:40,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 06:58:40,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:40,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:40,154 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:58:40,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-11-20 06:58:40,161 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:40,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:40,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:40,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:40,162 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:58:40,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:40,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:40,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2021-11-20 06:58:40,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:40,163 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:40,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:40,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:40,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:40,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:40,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:40,283 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:58:40,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:40,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:40,295 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 [2021-11-20 06:58:40,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:40,313 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:40,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:40,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:40,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:40,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:40,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:40,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 06:58:40,351 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:40,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:40,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:40,398 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:40,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 06:58:40,404 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 [2021-11-20 06:58:40,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:40,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:40,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:40,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:40,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:58:40,423 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:58:40,450 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:40,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:40,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:40,498 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:40,508 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:58:40,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:40,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:40,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:40,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:40,525 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:58:40,525 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:58:40,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 06:58:40,550 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:40,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:40,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:40,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:40,588 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 [2021-11-20 06:58:40,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:40,600 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:40,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:40,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:40,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:40,602 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:40,602 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:40,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 06:58:40,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:58:40,635 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:58:40,635 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:58:40,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:40,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:40,639 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:40,672 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:58:40,672 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:58:40,672 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:58:40,673 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2021-11-20 06:58:40,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 06:58:40,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:40,707 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:58:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:40,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:58:40,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:40,777 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:58:40,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:40,968 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 [2021-11-20 06:58:40,970 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 06:58:41,014 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 36 transitions. Complement of second has 8 states. [2021-11-20 06:58:41,016 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 [2021-11-20 06:58:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 06:58:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2021-11-20 06:58:41,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 3 letters. [2021-11-20 06:58:41,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:41,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-20 06:58:41,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:41,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 6 letters. [2021-11-20 06:58:41,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:41,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2021-11-20 06:58:41,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:58:41,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2021-11-20 06:58:41,039 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-20 06:58:41,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-11-20 06:58:41,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-11-20 06:58:41,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:58:41,041 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-11-20 06:58:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-11-20 06:58:41,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-11-20 06:58:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2021-11-20 06:58:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-11-20 06:58:41,093 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-11-20 06:58:41,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:41,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:58:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:58:41,106 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-20 06:58:41,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-11-20 06:58:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:58:41,123 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-11-20 06:58:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:58:41,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-11-20 06:58:41,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:58:41,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2021-11-20 06:58:41,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-20 06:58:41,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-20 06:58:41,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-11-20 06:58:41,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:41,127 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-20 06:58:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-11-20 06:58:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-11-20 06:58:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-11-20 06:58:41,129 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-11-20 06:58:41,130 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-11-20 06:58:41,130 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:58:41,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-11-20 06:58:41,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:58:41,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:58:41,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:58:41,131 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-20 06:58:41,132 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:58:41,132 INFO L791 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 109#L18-2 assume !!(main_~y~0#1 >= 0); 108#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 103#L19-2 [2021-11-20 06:58:41,132 INFO L793 eck$LassoCheckResult]: Loop: 103#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 104#L18-2 assume !!(main_~y~0#1 >= 0); 107#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 103#L19-2 [2021-11-20 06:58:41,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-11-20 06:58:41,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:41,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995345873] [2021-11-20 06:58:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:41,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:41,141 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:41,147 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:41,149 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2021-11-20 06:58:41,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:41,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83381721] [2021-11-20 06:58:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:41,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:41,156 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:41,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:41,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1810662097, now seen corresponding path program 1 times [2021-11-20 06:58:41,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:41,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964266558] [2021-11-20 06:58:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:41,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:41,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:41,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964266558] [2021-11-20 06:58:41,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964266558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:58:41,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345705686] [2021-11-20 06:58:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:41,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:58:41,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,213 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 06:58:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:41,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:58:41,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:41,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:58:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:41,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345705686] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:58:41,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:58:41,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-20 06:58:41,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225934039] [2021-11-20 06:58:41,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:58:41,375 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:41,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:41,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:41,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:41,376 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:58:41,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:41,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:41,377 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2021-11-20 06:58:41,377 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:41,377 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:41,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,479 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:41,479 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:58:41,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,483 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:41,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:41,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 06:58:41,515 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:41,515 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: [] [2021-11-20 06:58:41,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:41,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,567 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:41,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:41,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 06:58:41,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:41,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,623 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 06:58:41,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:41,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:41,682 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:41,682 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [8, 12, 1] Nus: [1, 0] [2021-11-20 06:58:41,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:41,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,709 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 06:58:41,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:41,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:41,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:41,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:58:41,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:41,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,762 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 06:58:41,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:41,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:41,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:41,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,808 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 06:58:41,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:41,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:41,877 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:58:41,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:41,885 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:41,886 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:41,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:41,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:41,886 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:58:41,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:41,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:41,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2021-11-20 06:58:41,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:41,887 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:41,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:41,970 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:41,970 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:58:41,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:41,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:41,975 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:41,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 06:58:41,981 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 [2021-11-20 06:58:41,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:41,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:41,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:41,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:41,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:41,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:41,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:42,008 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:42,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:42,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:42,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:42,051 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:42,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-20 06:58:42,053 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 [2021-11-20 06:58:42,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:42,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:42,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:42,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:42,065 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:58:42,066 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:58:42,079 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:42,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:42,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:42,115 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:42,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-20 06:58:42,117 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 [2021-11-20 06:58:42,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:42,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:42,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:42,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:42,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:42,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:42,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:42,141 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:58:42,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:58:42,146 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:58:42,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:42,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:42,160 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:42,161 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:58:42,161 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:58:42,161 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:58:42,162 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2021-11-20 06:58:42,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 06:58:42,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:42,208 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:58:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:42,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:58:42,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:42,264 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:58:42,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:42,313 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 [2021-11-20 06:58:42,314 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 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) [2021-11-20 06:58:42,334 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. 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 13 states and 16 transitions. Complement of second has 7 states. [2021-11-20 06:58:42,336 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 [2021-11-20 06:58:42,337 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) [2021-11-20 06:58:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2021-11-20 06:58:42,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-20 06:58:42,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:42,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-20 06:58:42,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:42,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-20 06:58:42,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:42,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2021-11-20 06:58:42,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:58:42,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2021-11-20 06:58:42,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-11-20 06:58:42,347 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-11-20 06:58:42,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2021-11-20 06:58:42,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:58:42,348 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-20 06:58:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2021-11-20 06:58:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-20 06:58:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-11-20 06:58:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-20 06:58:42,352 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-20 06:58:42,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:42,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:58:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:58:42,356 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2021-11-20 06:58:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:58:42,397 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-20 06:58:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:58:42,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2021-11-20 06:58:42,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 06:58:42,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2021-11-20 06:58:42,406 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-11-20 06:58:42,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-20 06:58:42,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2021-11-20 06:58:42,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:42,407 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-20 06:58:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2021-11-20 06:58:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-20 06:58:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 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) [2021-11-20 06:58:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-20 06:58:42,414 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-20 06:58:42,414 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-20 06:58:42,414 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 06:58:42,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2021-11-20 06:58:42,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:58:42,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:58:42,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:58:42,417 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2021-11-20 06:58:42,418 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:58:42,418 INFO L791 eck$LassoCheckResult]: Stem: 242#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 243#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 244#L18-2 assume !!(main_~y~0#1 >= 0); 245#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 240#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 241#L18-2 assume !!(main_~y~0#1 >= 0); 255#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 254#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 253#L18-2 assume !!(main_~y~0#1 >= 0); 252#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 251#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 250#L18-2 assume !!(main_~y~0#1 >= 0); 249#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 247#L19-2 [2021-11-20 06:58:42,418 INFO L793 eck$LassoCheckResult]: Loop: 247#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 248#L18-2 assume !!(main_~y~0#1 >= 0); 246#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 247#L19-2 [2021-11-20 06:58:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1702507665, now seen corresponding path program 1 times [2021-11-20 06:58:42,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:42,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129791494] [2021-11-20 06:58:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:42,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:42,443 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:42,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2021-11-20 06:58:42,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:42,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253811393] [2021-11-20 06:58:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:42,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:42,486 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:42,501 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash -137031896, now seen corresponding path program 2 times [2021-11-20 06:58:42,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:42,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512070544] [2021-11-20 06:58:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:42,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:42,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:42,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512070544] [2021-11-20 06:58:42,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512070544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:58:42,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903913978] [2021-11-20 06:58:42,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:58:42,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:58:42,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:42,574 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:58:42,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 06:58:42,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:58:42,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:58:42,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:58:42,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:42,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:58:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:42,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903913978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:58:42,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:58:42,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-20 06:58:42,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087906705] [2021-11-20 06:58:42,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:58:42,852 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:42,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:42,852 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:42,852 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:42,852 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:58:42,852 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:42,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:42,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:42,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2021-11-20 06:58:42,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:42,853 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:42,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:42,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:42,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:42,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:42,940 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:42,941 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:58:42,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:42,954 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:42,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:42,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:42,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 06:58:43,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:43,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,026 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-20 06:58:43,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:43,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:43,080 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:43,080 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [8, 12, 1] Nus: [1, 0] [2021-11-20 06:58:43,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:43,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,112 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-20 06:58:43,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:43,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:43,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:43,154 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: [] [2021-11-20 06:58:43,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-11-20 06:58:43,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,201 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:43,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:43,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-20 06:58:43,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:43,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:43,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,319 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-20 06:58:43,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:43,322 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:43,365 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:58:43,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:43,368 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:43,368 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:43,368 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:43,368 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:43,368 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:58:43,368 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,368 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:43,369 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:43,369 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2021-11-20 06:58:43,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:43,369 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:43,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:43,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:43,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:43,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:43,451 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:43,451 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:58:43,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,452 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,455 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 [2021-11-20 06:58:43,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:43,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:43,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:43,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:43,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:43,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:43,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:43,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-20 06:58:43,486 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:43,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-11-20 06:58:43,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,512 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-20 06:58:43,515 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 [2021-11-20 06:58:43,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:43,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:43,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:43,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:43,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:58:43,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:58:43,555 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:43,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-11-20 06:58:43,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,587 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-20 06:58:43,591 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 [2021-11-20 06:58:43,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:43,600 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:43,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:43,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:43,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:43,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:43,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:43,603 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:58:43,606 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:58:43,606 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:58:43,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:43,607 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:43,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-20 06:58:43,608 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:58:43,608 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:58:43,608 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:58:43,609 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2021-11-20 06:58:43,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:43,633 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:58:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:43,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:58:43,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:43,713 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:58:43,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:43,744 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 [2021-11-20 06:58:43,744 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 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) [2021-11-20 06:58:43,755 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. 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 18 states and 19 transitions. Complement of second has 7 states. [2021-11-20 06:58:43,756 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 [2021-11-20 06:58:43,757 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) [2021-11-20 06:58:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2021-11-20 06:58:43,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2021-11-20 06:58:43,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:43,757 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:58:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:43,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:58:43,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:43,828 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:58:43,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:43,852 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 [2021-11-20 06:58:43,852 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 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) [2021-11-20 06:58:43,862 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. 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 18 states and 19 transitions. Complement of second has 7 states. [2021-11-20 06:58:43,863 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 [2021-11-20 06:58:43,864 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) [2021-11-20 06:58:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2021-11-20 06:58:43,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2021-11-20 06:58:43,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:43,865 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:58:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:43,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:58:43,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:43,926 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:58:43,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:43,960 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 [2021-11-20 06:58:43,960 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 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) [2021-11-20 06:58:43,977 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. 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 25 states and 27 transitions. Complement of second has 6 states. [2021-11-20 06:58:43,978 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 [2021-11-20 06:58:43,980 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) [2021-11-20 06:58:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-11-20 06:58:43,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2021-11-20 06:58:43,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:43,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2021-11-20 06:58:43,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:43,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-20 06:58:43,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:43,984 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2021-11-20 06:58:43,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:58:43,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2021-11-20 06:58:43,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-11-20 06:58:43,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-11-20 06:58:43,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2021-11-20 06:58:43,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:58:43,991 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-20 06:58:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2021-11-20 06:58:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-20 06:58:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-20 06:58:43,993 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-20 06:58:43,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:58:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:58:43,995 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-11-20 06:58:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:58:44,036 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-11-20 06:58:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:58:44,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2021-11-20 06:58:44,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:58:44,040 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2021-11-20 06:58:44,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-11-20 06:58:44,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-11-20 06:58:44,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2021-11-20 06:58:44,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:58:44,041 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-20 06:58:44,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2021-11-20 06:58:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-11-20 06:58:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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) [2021-11-20 06:58:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-11-20 06:58:44,044 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-11-20 06:58:44,044 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-11-20 06:58:44,044 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 06:58:44,045 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2021-11-20 06:58:44,046 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:58:44,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:58:44,046 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:58:44,047 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2021-11-20 06:58:44,047 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:58:44,048 INFO L791 eck$LassoCheckResult]: Stem: 673#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 674#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 675#L18-2 assume !!(main_~y~0#1 >= 0); 676#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 668#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 669#L18-2 assume !!(main_~y~0#1 >= 0); 702#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 701#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 700#L18-2 assume !!(main_~y~0#1 >= 0); 699#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 698#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 697#L18-2 assume !!(main_~y~0#1 >= 0); 696#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 695#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 694#L18-2 assume !!(main_~y~0#1 >= 0); 693#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 692#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 691#L18-2 assume !!(main_~y~0#1 >= 0); 690#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 689#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 688#L18-2 assume !!(main_~y~0#1 >= 0); 687#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 686#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 685#L18-2 assume !!(main_~y~0#1 >= 0); 684#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 683#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 682#L18-2 assume !!(main_~y~0#1 >= 0); 681#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 680#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 672#L18-2 [2021-11-20 06:58:44,048 INFO L793 eck$LassoCheckResult]: Loop: 672#L18-2 assume !!(main_~y~0#1 >= 0); 679#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 678#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 672#L18-2 [2021-11-20 06:58:44,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -191897876, now seen corresponding path program 2 times [2021-11-20 06:58:44,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:44,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194755665] [2021-11-20 06:58:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:44,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:44,068 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:44,093 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:44,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash 40814, now seen corresponding path program 1 times [2021-11-20 06:58:44,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:44,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451705573] [2021-11-20 06:58:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:44,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:44,098 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:44,101 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash -228141917, now seen corresponding path program 3 times [2021-11-20 06:58:44,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:44,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971925946] [2021-11-20 06:58:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:44,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:44,139 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:58:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:58:44,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:58:44,222 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:44,223 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:44,223 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:44,223 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:44,223 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:58:44,223 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:44,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:44,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2021-11-20 06:58:44,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:44,224 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:44,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,290 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:44,290 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:58:44,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:44,299 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:44,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:44,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:44,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-20 06:58:44,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:44,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:44,373 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:44,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:44,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:44,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-20 06:58:44,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:58:44,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=1}] Lambdas: [1, 0, 1] Nus: [0, 0] [2021-11-20 06:58:44,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:44,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:44,461 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:44,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:58:44,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:44,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-20 06:58:44,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:44,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:44,499 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:44,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-20 06:58:44,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:58:44,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:58:44,540 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:58:44,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:44,546 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:58:44,547 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:58:44,547 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:58:44,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:58:44,547 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:58:44,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:58:44,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:58:44,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2021-11-20 06:58:44,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:58:44,547 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:58:44,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:58:44,633 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:58:44,633 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:58:44,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:44,635 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:44,638 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 [2021-11-20 06:58:44,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:44,649 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:44,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:44,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:44,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:44,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-20 06:58:44,650 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:44,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:44,654 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:58:44,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-11-20 06:58:44,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:44,679 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:44,681 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 [2021-11-20 06:58:44,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-20 06:58:44,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:58:44,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:58:44,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:58:44,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:58:44,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:58:44,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:58:44,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:58:44,698 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:58:44,701 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:58:44,701 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:58:44,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:58:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:58:44,708 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:58:44,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-20 06:58:44,715 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:58:44,715 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:58:44,715 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:58:44,715 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 101 Supporting invariants [] [2021-11-20 06:58:44,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:44,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:58:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:44,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:58:44,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:44,891 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:58:44,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:58:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:44,917 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 [2021-11-20 06:58:44,917 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 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) [2021-11-20 06:58:44,938 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. 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 61 states and 65 transitions. Complement of second has 6 states. [2021-11-20 06:58:44,939 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 [2021-11-20 06:58:44,940 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) [2021-11-20 06:58:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-11-20 06:58:44,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2021-11-20 06:58:44,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:44,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2021-11-20 06:58:44,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:44,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2021-11-20 06:58:44,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:58:44,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2021-11-20 06:58:44,944 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:58:44,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2021-11-20 06:58:44,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 06:58:44,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 06:58:44,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 06:58:44,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:44,946 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:58:44,946 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:58:44,946 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:58:44,946 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 06:58:44,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:58:44,947 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:58:44,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 06:58:44,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:58:44 BoogieIcfgContainer [2021-11-20 06:58:44,979 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 06:58:44,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:58:44,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:58:44,980 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:58:44,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:58:38" (3/4) ... [2021-11-20 06:58:44,983 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:58:44,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:58:44,984 INFO L158 Benchmark]: Toolchain (without parser) took 6640.44ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 63.3MB in the beginning and 96.8MB in the end (delta: -33.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:58:44,985 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:58:45,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.52ms. Allocated memory is still 96.5MB. Free memory was 63.2MB in the beginning and 73.3MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:58:45,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.48ms. Allocated memory is still 96.5MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:58:45,004 INFO L158 Benchmark]: Boogie Preprocessor took 21.80ms. Allocated memory is still 96.5MB. Free memory was 71.8MB in the beginning and 71.0MB in the end (delta: 810.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:58:45,004 INFO L158 Benchmark]: RCFGBuilder took 271.67ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 63.4MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:58:45,005 INFO L158 Benchmark]: BuchiAutomizer took 5987.59ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 63.1MB in the beginning and 96.9MB in the end (delta: -33.8MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2021-11-20 06:58:45,005 INFO L158 Benchmark]: Witness Printer took 4.41ms. Allocated memory is still 123.7MB. Free memory was 96.9MB in the beginning and 96.8MB in the end (delta: 53.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:58:45,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.52ms. Allocated memory is still 96.5MB. Free memory was 63.2MB in the beginning and 73.3MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.48ms. Allocated memory is still 96.5MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.80ms. Allocated memory is still 96.5MB. Free memory was 71.8MB in the beginning and 71.0MB in the end (delta: 810.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 271.67ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 63.4MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5987.59ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 63.1MB in the beginning and 96.9MB in the end (delta: -33.8MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Witness Printer took 4.41ms. Allocated memory is still 123.7MB. Free memory was 96.9MB in the beginning and 96.8MB in the end (delta: 53.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function 101 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.9s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 4.6s. Construction of modules took 0.0s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 46 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 54ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 06:58:45,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:45,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-11-20 06:58:45,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-20 06:58:45,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-20 06:58:45,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f3b4d2-05f5-4315-bfe1-22c4a641fa2f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE