./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.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_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/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_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/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_70b6a9e0-b722-4324-883b-09518a94ef9e/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 ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:46:36,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:46:36,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:46:36,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:46:36,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:46:36,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:46:36,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:46:36,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:46:36,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:46:36,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:46:36,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:46:36,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:46:36,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:46:36,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:46:36,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:46:36,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:46:36,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:46:36,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:46:36,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:46:36,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:46:36,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:46:36,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:46:36,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:46:36,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:46:36,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:46:36,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:46:36,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:46:36,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:46:36,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:46:36,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:46:36,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:46:36,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:46:36,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:46:36,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:46:36,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:46:36,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:46:36,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:46:36,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:46:36,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:46:36,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:46:36,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:46:36,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 06:46:36,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:46:36,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:46:36,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:46:36,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:46:36,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:46:36,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:46:36,699 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:46:36,699 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:46:36,699 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:46:36,700 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:46:36,700 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:46:36,700 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:46:36,700 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:46:36,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:46:36,701 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:46:36,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:46:36,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:46:36,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:46:36,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:46:36,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:46:36,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:46:36,702 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:46:36,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:46:36,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:46:36,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:46:36,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:46:36,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:46:36,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:46:36,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:46:36,704 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:46:36,705 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_70b6a9e0-b722-4324-883b-09518a94ef9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 [2021-11-20 06:46:36,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:46:36,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:46:36,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:46:36,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:46:36,996 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:46:36,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-11-20 06:46:37,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/data/146eadfd6/c84935fef08e43aaa957dbb7328a0550/FLAG0d9707194 [2021-11-20 06:46:37,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:46:37,488 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-11-20 06:46:37,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/data/146eadfd6/c84935fef08e43aaa957dbb7328a0550/FLAG0d9707194 [2021-11-20 06:46:37,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/data/146eadfd6/c84935fef08e43aaa957dbb7328a0550 [2021-11-20 06:46:37,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:46:37,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:46:37,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:46:37,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:46:37,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:46:37,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:46:37" (1/1) ... [2021-11-20 06:46:37,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381bb9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:37, skipping insertion in model container [2021-11-20 06:46:37,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:46:37" (1/1) ... [2021-11-20 06:46:37,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:46:37,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:46:38,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:46:38,084 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:46:38,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:46:38,105 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:46:38,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38 WrapperNode [2021-11-20 06:46:38,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:46:38,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:46:38,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:46:38,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:46:38,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,139 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-11-20 06:46:38,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:46:38,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:46:38,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:46:38,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:46:38,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:46:38,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:46:38,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:46:38,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:46:38,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (1/1) ... [2021-11-20 06:46:38,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:38,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:38,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:38,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:46:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:46:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:46:38,297 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:46:38,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:46:38,393 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:46:38,401 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:46:38,401 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:46:38,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:38 BoogieIcfgContainer [2021-11-20 06:46:38,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:46:38,405 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:46:38,405 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:46:38,408 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:46:38,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:46:38,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:46:37" (1/3) ... [2021-11-20 06:46:38,411 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c056f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:46:38, skipping insertion in model container [2021-11-20 06:46:38,411 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:46:38,412 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:38" (2/3) ... [2021-11-20 06:46:38,412 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c056f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:46:38, skipping insertion in model container [2021-11-20 06:46:38,412 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:46:38,413 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:38" (3/3) ... [2021-11-20 06:46:38,415 INFO L388 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2021-11-20 06:46:38,460 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:46:38,460 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:46:38,461 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:46:38,461 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:46:38,461 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:46:38,461 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:46:38,461 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:46:38,461 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:46:38,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:38,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:46:38,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:46:38,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:46:38,495 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:46:38,495 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:46:38,495 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:46:38,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:38,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 06:46:38,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:46:38,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:46:38,498 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:46:38,498 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 06:46:38,505 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 3#L19-2true [2021-11-20 06:46:38,505 INFO L793 eck$LassoCheckResult]: Loop: 3#L19-2true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 7#L21-2true assume !(main_~j~0#1 <= main_~i~0#1); 5#L21-3true main_~i~0#1 := 1 + main_~i~0#1; 3#L19-2true [2021-11-20 06:46:38,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 06:46:38,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:38,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526145872] [2021-11-20 06:46:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:38,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:38,591 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:38,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-11-20 06:46:38,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:38,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651161425] [2021-11-20 06:46:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:38,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:38,625 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:38,632 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2021-11-20 06:46:38,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:38,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147435906] [2021-11-20 06:46:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:38,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:38,643 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:38,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:38,799 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:38,800 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:38,800 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:38,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:38,800 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:46:38,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:38,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:38,801 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:38,801 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2021-11-20 06:46:38,801 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:38,801 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:38,835 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 06:46:38,874 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 06:46:38,878 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 06:46:38,994 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:38,994 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:46:38,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:39,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:39,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:39,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:46:39,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:39,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:46:39,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:39,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:39,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:39,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:46:39,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:39,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:46:39,316 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:46:39,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:39,327 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:39,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:39,328 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:39,328 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:39,328 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:46:39,328 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:39,328 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:39,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:39,328 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2021-11-20 06:46:39,328 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:39,329 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:39,331 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 06:46:39,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:46:39,345 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 06:46:39,424 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:39,428 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:46:39,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:39,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:39,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:39,436 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 06:46:39,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:39,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:39,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:39,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:39,451 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:46:39,451 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:46:39,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:46:39,469 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:46:39,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-11-20 06:46:39,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:39,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:39,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:39,518 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 06:46:39,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 06:46:39,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:39,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:39,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:39,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:39,538 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:46:39,538 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:46:39,559 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:46:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:39,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:39,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:39,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:39,599 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 06:46:39,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:39,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:46:39,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:39,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:39,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:39,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 06:46:39,615 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:46:39,615 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:46:39,628 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:46:39,636 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-20 06:46:39,636 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:46:39,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:39,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:39,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:39,662 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:46:39,662 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:46:39,662 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:46:39,663 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-11-20 06:46:39,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 06:46:39,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:39,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:46:39,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:39,805 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:46:39,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:39,828 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:46:39,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:39,903 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 06:46:39,934 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 06:46:39,936 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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 06:46:40,030 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 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 31 states and 49 transitions. Complement of second has 9 states. [2021-11-20 06:46:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-20 06:46:40,042 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 06:46:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2021-11-20 06:46:40,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 2 letters. Loop has 3 letters. [2021-11-20 06:46:40,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:40,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-20 06:46:40,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:40,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 2 letters. Loop has 6 letters. [2021-11-20 06:46:40,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:40,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 49 transitions. [2021-11-20 06:46:40,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 06:46:40,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 19 transitions. [2021-11-20 06:46:40,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-20 06:46:40,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-20 06:46:40,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-11-20 06:46:40,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:46:40,062 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-11-20 06:46:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-11-20 06:46:40,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-20 06:46:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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 06:46:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-11-20 06:46:40,089 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-11-20 06:46:40,089 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-11-20 06:46:40,090 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:46:40,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2021-11-20 06:46:40,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 06:46:40,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:46:40,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:46:40,092 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-20 06:46:40,092 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 06:46:40,093 INFO L791 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 98#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 88#L21-2 [2021-11-20 06:46:40,093 INFO L793 eck$LassoCheckResult]: Loop: 88#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 96#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 91#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 87#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 88#L21-2 [2021-11-20 06:46:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-20 06:46:40,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:40,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317571455] [2021-11-20 06:46:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:40,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:40,108 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:40,121 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:40,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1537394, now seen corresponding path program 1 times [2021-11-20 06:46:40,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:40,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641887382] [2021-11-20 06:46:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:40,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:40,130 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:40,136 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:40,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 1 times [2021-11-20 06:46:40,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:40,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715014149] [2021-11-20 06:46:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:40,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:40,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:40,155 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:40,206 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:40,207 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:40,207 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:40,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:40,211 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:46:40,211 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,211 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:40,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:40,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2021-11-20 06:46:40,212 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:40,212 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:40,215 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 06:46:40,220 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 06:46:40,229 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 06:46:40,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:40,302 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:46:40,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:46:40,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:40,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 06:46:40,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:46:40,346 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 06:46:40,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:40,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:46:40,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:40,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 06:46:40,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:46:40,414 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 06:46:40,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:40,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 06:46:40,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:46:40,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:40,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:40,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,476 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 06:46:40,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:46:40,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:40,639 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:46:40,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:40,645 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:40,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:40,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:40,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:40,645 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:46:40,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:40,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:40,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2021-11-20 06:46:40,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:40,646 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:40,647 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 06:46:40,655 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 06:46:40,658 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 06:46:40,717 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:40,718 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:46:40,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,719 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,726 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 06:46:40,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:40,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:40,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:40,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:40,738 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:46:40,738 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:46:40,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 06:46:40,765 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:46:40,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:40,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,806 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,811 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 06:46:40,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:40,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:40,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:40,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:40,823 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:46:40,823 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:46:40,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 06:46:40,845 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:46:40,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:40,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,888 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,894 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 06:46:40,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:40,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:46:40,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:40,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:40,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:40,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:46:40,906 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:46:40,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:46:40,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 06:46:40,922 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:46:40,922 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:46:40,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:40,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:40,923 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:40,929 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:46:40,929 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:46:40,929 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:46:40,929 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-11-20 06:46:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 06:46:40,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:40,963 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:46:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:40,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:46:40,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:40,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:46:40,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:46:41,036 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 06:46:41,036 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7 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 06:46:41,060 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7. 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 23 states and 32 transitions. Complement of second has 6 states. [2021-11-20 06:46:41,060 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 06:46:41,062 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 06:46:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-11-20 06:46:41,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2021-11-20 06:46:41,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:41,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2021-11-20 06:46:41,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:41,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2021-11-20 06:46:41,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:41,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2021-11-20 06:46:41,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:46:41,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 23 transitions. [2021-11-20 06:46:41,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-11-20 06:46:41,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-11-20 06:46:41,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2021-11-20 06:46:41,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:46:41,078 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2021-11-20 06:46:41,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2021-11-20 06:46:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-11-20 06:46:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 states have internal predecessors, (22), 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 06:46:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2021-11-20 06:46:41,084 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-11-20 06:46:41,084 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-11-20 06:46:41,084 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 06:46:41,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2021-11-20 06:46:41,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:46:41,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:46:41,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:46:41,085 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-20 06:46:41,085 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 06:46:41,085 INFO L791 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 173#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 167#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 168#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 174#L21-2 [2021-11-20 06:46:41,086 INFO L793 eck$LassoCheckResult]: Loop: 174#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 174#L21-2 [2021-11-20 06:46:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-11-20 06:46:41,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:41,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789225835] [2021-11-20 06:46:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:41,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,102 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,106 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-11-20 06:46:41,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:41,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551917844] [2021-11-20 06:46:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:41,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,110 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,125 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:41,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2021-11-20 06:46:41,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:41,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233705364] [2021-11-20 06:46:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:41,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,132 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:41,153 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:41,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:41,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:41,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:41,154 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:46:41,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:41,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:41,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2021-11-20 06:46:41,156 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:41,156 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:41,158 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 06:46:41,181 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 06:46:41,186 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 06:46:41,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,252 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:41,252 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:46:41,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,255 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:46:41,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:41,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 06:46:41,302 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:46:41,302 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 06:46:41,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,327 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 06:46:41,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:46:41,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:41,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,356 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 06:46:41,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:46:41,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:41,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:46:41,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,510 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:41,510 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:41,510 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:41,510 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:41,510 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:46:41,511 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,511 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:41,511 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:41,511 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2021-11-20 06:46:41,511 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:41,511 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:41,512 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 06:46:41,522 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 06:46:41,529 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 06:46:41,563 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:41,563 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:46:41,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,564 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 06:46:41,577 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 06:46:41,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:41,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:41,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:41,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:41,589 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:46:41,589 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:46:41,594 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:46:41,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,617 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 06:46:41,620 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 06:46:41,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:41,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:46:41,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:41,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:41,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:41,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:46:41,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:46:41,639 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:46:41,644 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:46:41,644 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:46:41,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,646 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-20 06:46:41,651 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:46:41,651 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:46:41,651 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:46:41,651 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~i~0#1 - 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2021-11-20 06:46:41,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,673 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:46:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:41,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:46:41,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:41,728 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:46:41,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:46:41,729 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-20 06:46:41,729 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 06:46:41,738 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 27 states and 39 transitions. Complement of second has 5 states. [2021-11-20 06:46:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 06:46:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 06:46:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-20 06:46:41,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2021-11-20 06:46:41,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:41,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2021-11-20 06:46:41,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:41,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-20 06:46:41,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:41,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 39 transitions. [2021-11-20 06:46:41,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:46:41,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 34 transitions. [2021-11-20 06:46:41,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-20 06:46:41,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-11-20 06:46:41,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 34 transitions. [2021-11-20 06:46:41,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:46:41,758 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-11-20 06:46:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 34 transitions. [2021-11-20 06:46:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-11-20 06:46:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:46:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2021-11-20 06:46:41,761 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2021-11-20 06:46:41,761 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2021-11-20 06:46:41,761 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 06:46:41,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 28 transitions. [2021-11-20 06:46:41,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:46:41,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:46:41,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:46:41,763 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-11-20 06:46:41,763 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 06:46:41,763 INFO L791 eck$LassoCheckResult]: Stem: 250#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 251#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 244#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 245#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 252#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 261#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 259#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 255#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 254#L21-2 [2021-11-20 06:46:41,763 INFO L793 eck$LassoCheckResult]: Loop: 254#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 254#L21-2 [2021-11-20 06:46:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 2 times [2021-11-20 06:46:41,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:41,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105643041] [2021-11-20 06:46:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:41,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,775 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,793 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-11-20 06:46:41,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:41,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551722249] [2021-11-20 06:46:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:41,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,800 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,806 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash 756678361, now seen corresponding path program 3 times [2021-11-20 06:46:41,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:46:41,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563176609] [2021-11-20 06:46:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:41,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:46:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,826 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:46:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:46:41,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:46:41,863 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:41,863 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:41,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:41,863 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:41,863 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:46:41,863 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:41,864 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:41,864 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2021-11-20 06:46:41,864 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:41,864 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:41,865 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 06:46:41,873 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 06:46:41,877 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 06:46:41,905 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:41,905 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:46:41,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,910 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:46:41,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:41,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-20 06:46:41,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:41,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:41,978 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:46:41,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:46:41,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 06:46:42,135 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:46:42,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-11-20 06:46:42,137 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:46:42,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:46:42,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:46:42,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:46:42,138 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:46:42,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:42,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:46:42,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:46:42,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2021-11-20 06:46:42,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:46:42,138 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:46:42,139 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 06:46:42,147 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 06:46:42,149 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 06:46:42,196 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:46:42,197 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:46:42,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:42,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:42,198 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:42,206 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:46:42,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:46:42,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:46:42,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:46:42,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:46:42,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:46:42,217 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:46:42,217 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:46:42,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-20 06:46:42,227 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:46:42,238 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:46:42,238 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:46:42,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:46:42,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:46:42,240 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:46:42,241 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:46:42,241 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:46:42,241 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:46:42,242 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-11-20 06:46:42,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 06:46:42,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:42,278 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:46:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:42,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:46:42,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:42,326 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:46:42,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:42,327 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 06:46:42,328 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-20 06:46:42,329 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 06:46:42,341 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 25 states and 36 transitions. Complement of second has 5 states. [2021-11-20 06:46:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 06:46:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 06:46:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-20 06:46:42,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-20 06:46:42,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:42,344 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:46:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:42,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:46:42,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:42,392 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:46:42,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:42,393 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 06:46:42,394 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-20 06:46:42,394 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 06:46:42,409 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 25 states and 36 transitions. Complement of second has 5 states. [2021-11-20 06:46:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 06:46:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 06:46:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-20 06:46:42,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-20 06:46:42,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:42,412 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:46:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:42,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:46:42,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:42,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:46:42,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:42,464 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 06:46:42,465 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-20 06:46:42,466 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 06:46:42,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 22 states and 31 transitions. Complement of second has 4 states. [2021-11-20 06:46:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 06:46:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 06:46:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-20 06:46:42,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-20 06:46:42,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:42,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2021-11-20 06:46:42,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:42,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-20 06:46:42,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:46:42,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2021-11-20 06:46:42,488 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:46:42,488 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-11-20 06:46:42,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 06:46:42,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 06:46:42,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 06:46:42,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:46:42,489 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:46:42,489 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:46:42,489 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:46:42,490 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 06:46:42,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:46:42,490 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:46:42,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 06:46:42,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:46:42 BoogieIcfgContainer [2021-11-20 06:46:42,498 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 06:46:42,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:46:42,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:46:42,498 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:46:42,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:38" (3/4) ... [2021-11-20 06:46:42,501 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:46:42,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:46:42,503 INFO L158 Benchmark]: Toolchain (without parser) took 4606.69ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 45.7MB in the end (delta: 33.0MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-11-20 06:46:42,503 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:46:42,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.39ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 86.8MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:46:42,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.15ms. Allocated memory is still 109.1MB. Free memory was 86.8MB in the beginning and 85.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:46:42,518 INFO L158 Benchmark]: Boogie Preprocessor took 16.94ms. Allocated memory is still 109.1MB. Free memory was 85.5MB in the beginning and 84.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:46:42,518 INFO L158 Benchmark]: RCFGBuilder took 245.62ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 76.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:46:42,519 INFO L158 Benchmark]: BuchiAutomizer took 4093.04ms. Allocated memory is still 109.1MB. Free memory was 76.4MB in the beginning and 46.4MB in the end (delta: 30.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2021-11-20 06:46:42,521 INFO L158 Benchmark]: Witness Printer took 3.57ms. Allocated memory is still 109.1MB. Free memory was 46.4MB in the beginning and 45.7MB in the end (delta: 638.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:46:42,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.39ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 86.8MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.15ms. Allocated memory is still 109.1MB. Free memory was 86.8MB in the beginning and 85.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.94ms. Allocated memory is still 109.1MB. Free memory was 85.5MB in the beginning and 84.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 245.62ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 76.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4093.04ms. Allocated memory is still 109.1MB. Free memory was 76.4MB in the beginning and 46.4MB in the end (delta: 30.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Witness Printer took 3.57ms. Allocated memory is still 109.1MB. Free memory was 46.4MB in the beginning and 45.7MB in the end (delta: 638.3kB). 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 2 * i + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 32 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax193 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf110 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 06:46:42,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:42,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:42,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b6a9e0-b722-4324-883b-09518a94ef9e/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