./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg --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 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:55:02,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:55:02,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:55:02,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:55:02,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:55:02,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:55:02,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:55:02,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:55:02,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:55:02,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:55:02,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:55:02,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:55:02,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:55:02,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:55:02,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:55:02,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:55:02,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:55:02,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:55:02,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:55:02,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:55:02,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:55:02,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:55:02,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:55:02,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:55:02,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:55:02,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:55:02,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:55:02,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:55:02,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:55:02,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:55:02,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:55:02,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:55:02,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:55:02,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:55:02,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:55:02,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:55:02,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:55:02,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:55:02,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:55:02,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:55:02,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:55:02,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:55:02,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:55:02,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:55:02,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:55:02,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:55:02,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:55:02,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:55:02,730 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:55:02,730 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:55:02,731 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:55:02,731 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:55:02,731 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:55:02,731 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:55:02,731 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:55:02,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:55:02,731 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:55:02,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:55:02,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:55:02,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:55:02,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:55:02,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:55:02,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:55:02,732 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:55:02,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:55:02,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:55:02,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:55:02,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:55:02,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:55:02,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:55:02,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:55:02,734 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:55:02,734 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_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2021-10-28 09:55:02,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:55:03,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:55:03,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:55:03,026 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:55:03,026 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:55:03,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-10-28 09:55:03,085 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/data/b84f0db2f/9127578534c44acda67de3b5e3481320/FLAG8697850b9 [2021-10-28 09:55:03,595 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:55:03,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-10-28 09:55:03,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/data/b84f0db2f/9127578534c44acda67de3b5e3481320/FLAG8697850b9 [2021-10-28 09:55:03,964 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/data/b84f0db2f/9127578534c44acda67de3b5e3481320 [2021-10-28 09:55:03,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:55:03,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:55:03,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:55:03,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:55:03,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:55:03,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0117ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03, skipping insertion in model container [2021-10-28 09:55:03,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:55:04,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:55:04,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:55:04,211 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:55:04,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:55:04,236 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:55:04,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04 WrapperNode [2021-10-28 09:55:04,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:55:04,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:55:04,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:55:04,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:55:04,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:55:04,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:55:04,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:55:04,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:55:04,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:55:04,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:55:04,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:55:04,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:55:04,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (1/1) ... [2021-10-28 09:55:04,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:04,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:04,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:55:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:55:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:55:04,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:55:04,547 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 09:55:04,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:04 BoogieIcfgContainer [2021-10-28 09:55:04,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:55:04,551 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:55:04,551 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:55:04,554 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:55:04,555 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:55:04,555 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:55:03" (1/3) ... [2021-10-28 09:55:04,556 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d2586dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:55:04, skipping insertion in model container [2021-10-28 09:55:04,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:55:04,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:04" (2/3) ... [2021-10-28 09:55:04,557 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d2586dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:55:04, skipping insertion in model container [2021-10-28 09:55:04,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:55:04,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:04" (3/3) ... [2021-10-28 09:55:04,559 INFO L389 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-10-28 09:55:04,622 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:55:04,622 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:55:04,622 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:55:04,622 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:55:04,623 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:55:04,623 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:55:04,623 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:55:04,623 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:55:04,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:55:04,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:55:04,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:55:04,657 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:55:04,658 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:55:04,658 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:55:04,658 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:55:04,659 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:55:04,659 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:55:04,660 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:55:04,660 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:55:04,666 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L20true assume main_~k~0 >= 1;main_~i~0 := 0; 8#L22-2true [2021-10-28 09:55:04,666 INFO L793 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 6#L24-2true assume !(main_~j~0 <= main_~i~0); 9#L24-3true main_~i~0 := 1 + main_~i~0; 8#L22-2true [2021-10-28 09:55:04,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-28 09:55:04,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:04,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510468352] [2021-10-28 09:55:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:04,755 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:04,774 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,777 INFO L85 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2021-10-28 09:55:04,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:04,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867391169] [2021-10-28 09:55:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:04,788 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:04,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2021-10-28 09:55:04,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:04,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918800554] [2021-10-28 09:55:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:04,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:04,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918800554] [2021-10-28 09:55:04,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918800554] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:04,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:04,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:55:04,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677196312] [2021-10-28 09:55:04,966 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:04,966 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:04,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:04,967 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:04,967 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:55:04,967 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:04,967 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:04,967 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:04,967 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2021-10-28 09:55:04,967 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:04,968 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:04,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:04,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:04,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:05,088 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:05,089 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:55:05,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:05,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:05,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:55:05,134 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:05,134 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:55:05,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:05,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:05,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:55:05,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:05,203 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:55:05,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:55:05,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:05,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:05,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:55:05,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:05,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:55:05,479 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:55:05,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,487 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:05,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:05,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:05,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:05,487 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:55:05,487 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,488 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:05,488 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:05,488 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2021-10-28 09:55:05,488 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:05,488 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:05,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:05,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:05,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:05,554 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:05,559 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:55:05,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:55:05,574 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 [2021-10-28 09:55:05,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:05,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:05,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:05,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:05,592 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:55:05,592 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:55:05,607 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:05,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,655 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:55:05,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:55:05,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:05,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:05,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:05,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:05,667 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:55:05,667 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:55:05,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:05,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:55:05,730 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 [2021-10-28 09:55:05,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:05,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:05,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:05,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:05,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:05,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:05,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:05,773 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:55:05,789 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:55:05,789 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:55:05,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:05,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:05,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:05,798 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:55:05,799 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:55:05,799 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:55:05,799 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:55:05,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:55:05,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,840 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:55:05,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:05,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:55:05,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:05,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:05,934 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:55:05,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:06,021 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 [2021-10-28 09:55:06,022 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-10-28 09:55:06,086 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). 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 35 states and 53 transitions. Complement of second has 9 states. [2021-10-28 09:55:06,087 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 [2021-10-28 09:55:06,089 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) [2021-10-28 09:55:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 33 transitions. [2021-10-28 09:55:06,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-28 09:55:06,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:06,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-28 09:55:06,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:06,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-28 09:55:06,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:06,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2021-10-28 09:55:06,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:55:06,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 14 states and 19 transitions. [2021-10-28 09:55:06,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 09:55:06,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 09:55:06,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-10-28 09:55:06,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:55:06,103 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-28 09:55:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-10-28 09:55:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-28 09:55:06,128 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) [2021-10-28 09:55:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-10-28 09:55:06,129 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-10-28 09:55:06,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:55:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:55:06,134 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. 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) [2021-10-28 09:55:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:06,156 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2021-10-28 09:55:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:55:06,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-10-28 09:55:06,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:55:06,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2021-10-28 09:55:06,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 09:55:06,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 09:55:06,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-10-28 09:55:06,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:55:06,159 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-28 09:55:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-10-28 09:55:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-10-28 09:55:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2021-10-28 09:55:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-10-28 09:55:06,161 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-28 09:55:06,161 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-28 09:55:06,161 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:55:06,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-10-28 09:55:06,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:55:06,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:55:06,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:55:06,162 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:55:06,163 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:55:06,163 INFO L791 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 120#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 124#L22-2 [2021-10-28 09:55:06,163 INFO L793 eck$LassoCheckResult]: Loop: 124#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 121#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 122#L24-2 assume !(main_~j~0 <= main_~i~0); 123#L24-3 main_~i~0 := 1 + main_~i~0; 124#L22-2 [2021-10-28 09:55:06,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2021-10-28 09:55:06,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:06,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027208306] [2021-10-28 09:55:06,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:06,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:06,170 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:06,175 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1332592, now seen corresponding path program 1 times [2021-10-28 09:55:06,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:06,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021996711] [2021-10-28 09:55:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:06,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:06,183 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:06,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:06,191 INFO L85 PathProgramCache]: Analyzing trace with hash 920235987, now seen corresponding path program 1 times [2021-10-28 09:55:06,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:06,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090690974] [2021-10-28 09:55:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:06,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:06,200 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:06,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:06,243 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:06,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:06,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:06,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:06,244 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:55:06,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,245 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:06,245 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:06,245 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2021-10-28 09:55:06,245 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:06,245 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:06,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:06,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:06,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:06,305 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:06,305 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:55:06,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,307 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:06,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:06,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:55:06,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:06,351 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: [] [2021-10-28 09:55:06,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:06,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:06,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:06,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:55:06,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:06,411 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: [] [2021-10-28 09:55:06,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:06,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,432 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:55:06,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:06,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:06,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:06,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,489 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:55:06,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:06,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:55:06,701 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:55:06,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-28 09:55:06,704 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:06,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:06,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:06,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:06,704 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:55:06,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:06,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:06,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2021-10-28 09:55:06,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:06,705 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:06,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:06,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:06,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:06,771 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:06,772 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:55:06,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,780 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 [2021-10-28 09:55:06,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:55:06,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:06,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:06,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:06,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:06,794 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:55:06,794 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:55:06,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:06,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-10-28 09:55:06,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:55:06,838 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 [2021-10-28 09:55:06,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:06,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:06,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:06,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:06,862 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:55:06,862 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:55:06,886 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:06,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:06,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,921 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,931 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 [2021-10-28 09:55:06,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:06,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:06,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:06,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:06,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:06,951 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:06,951 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:06,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:55:06,966 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:55:06,974 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 09:55:06,974 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:55:06,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:06,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:06,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,999 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:55:06,999 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:55:06,999 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:55:06,999 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~k~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2021-10-28 09:55:07,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:55:07,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:07,023 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:55:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:07,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:55:07,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:07,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:55:07,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:07,146 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 09:55:07,146 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:07,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 22 transitions. Complement of second has 10 states. [2021-10-28 09:55:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-28 09:55:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2021-10-28 09:55:07,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 09:55:07,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:07,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-28 09:55:07,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:07,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-28 09:55:07,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:07,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2021-10-28 09:55:07,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:55:07,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 21 transitions. [2021-10-28 09:55:07,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 09:55:07,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 09:55:07,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2021-10-28 09:55:07,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:55:07,191 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-10-28 09:55:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2021-10-28 09:55:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-28 09:55:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-10-28 09:55:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2021-10-28 09:55:07,193 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-10-28 09:55:07,193 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-10-28 09:55:07,193 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:55:07,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2021-10-28 09:55:07,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:55:07,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:55:07,199 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:55:07,199 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:55:07,199 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2021-10-28 09:55:07,200 INFO L791 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 193#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 203#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 194#L24-2 [2021-10-28 09:55:07,200 INFO L793 eck$LassoCheckResult]: Loop: 194#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 195#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 204#L24-2 assume !(main_~j~0 <= main_~i~0); 200#L24-3 main_~i~0 := 1 + main_~i~0; 198#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 194#L24-2 [2021-10-28 09:55:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2021-10-28 09:55:07,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:07,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197784340] [2021-10-28 09:55:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:07,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:07,210 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:07,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 49622054, now seen corresponding path program 2 times [2021-10-28 09:55:07,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:07,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976379135] [2021-10-28 09:55:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:07,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:07,240 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:07,260 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:07,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash -416424834, now seen corresponding path program 2 times [2021-10-28 09:55:07,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:07,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299059866] [2021-10-28 09:55:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:07,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:07,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:07,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299059866] [2021-10-28 09:55:07,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299059866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:55:07,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963442908] [2021-10-28 09:55:07,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:55:07,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:55:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:07,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:55:07,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:55:07,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:55:07,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:55:07,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:55:07,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:07,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963442908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:55:07,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:55:07,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 09:55:07,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243929320] [2021-10-28 09:55:07,495 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:07,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:07,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:07,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:07,496 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:55:07,496 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:07,497 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:07,497 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:07,497 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2021-10-28 09:55:07,497 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:07,497 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:07,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:07,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:07,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:07,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:07,566 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:55:07,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:07,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:07,572 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:07,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:07,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:07,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:55:07,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:07,690 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:07,690 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: [] [2021-10-28 09:55:07,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:07,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:07,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:07,718 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:07,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:55:07,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:07,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:07,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:07,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:07,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:07,769 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:07,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:55:07,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:55:07,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:08,233 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:55:08,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:08,237 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:08,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:08,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:08,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:08,237 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:55:08,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:08,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:08,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:08,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2021-10-28 09:55:08,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:08,238 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:08,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,331 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:08,331 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:55:08,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:08,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:08,335 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:08,340 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 [2021-10-28 09:55:08,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:08,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:08,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:08,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:08,354 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:55:08,354 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:55:08,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 09:55:08,374 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:08,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:08,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:08,409 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:08,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:55:08,411 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 [2021-10-28 09:55:08,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:08,418 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:08,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:08,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:08,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:08,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:08,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:08,435 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:55:08,438 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:55:08,438 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:55:08,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:08,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:08,440 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:08,446 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:55:08,446 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:55:08,446 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:55:08,446 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:55:08,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:55:08,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:08,486 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:55:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:08,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:55:08,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:08,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:55:08,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:55:08,609 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 [2021-10-28 09:55:08,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-28 09:55:08,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 26 states and 34 transitions. Complement of second has 6 states. [2021-10-28 09:55:08,638 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 [2021-10-28 09:55:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-28 09:55:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 09:55:08,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-28 09:55:08,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:08,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-28 09:55:08,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:08,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-28 09:55:08,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:08,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 34 transitions. [2021-10-28 09:55:08,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 09:55:08,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 18 states and 25 transitions. [2021-10-28 09:55:08,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-28 09:55:08,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 09:55:08,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2021-10-28 09:55:08,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:55:08,643 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-10-28 09:55:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2021-10-28 09:55:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-28 09:55:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 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) [2021-10-28 09:55:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2021-10-28 09:55:08,645 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2021-10-28 09:55:08,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:55:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:55:08,647 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand has 8 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) [2021-10-28 09:55:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:08,702 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-10-28 09:55:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:55:08,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-10-28 09:55:08,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 09:55:08,704 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 21 states and 28 transitions. [2021-10-28 09:55:08,705 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-28 09:55:08,705 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-28 09:55:08,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2021-10-28 09:55:08,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:55:08,705 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-28 09:55:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2021-10-28 09:55:08,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-28 09:55:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-10-28 09:55:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-10-28 09:55:08,708 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-28 09:55:08,708 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-28 09:55:08,708 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:55:08,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2021-10-28 09:55:08,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 09:55:08,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:55:08,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:55:08,710 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-28 09:55:08,710 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:55:08,711 INFO L791 eck$LassoCheckResult]: Stem: 350#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 351#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 355#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 356#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 353#L24-2 assume !(main_~j~0 <= main_~i~0); 354#L24-3 main_~i~0 := 1 + main_~i~0; 362#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 363#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 352#L24-2 [2021-10-28 09:55:08,711 INFO L793 eck$LassoCheckResult]: Loop: 352#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 352#L24-2 [2021-10-28 09:55:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 3 times [2021-10-28 09:55:08,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:08,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921705979] [2021-10-28 09:55:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:08,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:08,725 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:08,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-10-28 09:55:08,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:08,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112266197] [2021-10-28 09:55:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:08,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:08,746 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:08,749 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 4 times [2021-10-28 09:55:08,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:08,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450334440] [2021-10-28 09:55:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:08,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:08,764 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:08,783 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:08,876 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:08,876 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:08,876 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:08,876 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:08,876 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:55:08,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:08,877 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:08,877 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:08,877 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2021-10-28 09:55:08,877 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:08,877 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:08,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:08,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:08,965 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:55:08,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:08,966 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:08,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:08,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:08,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:55:08,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:08,996 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:55:09,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:09,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,041 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:09,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:09,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:55:09,063 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:09,063 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:55:09,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 09:55:09,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,092 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:09,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:09,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:55:09,111 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:09,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:55:09,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:09,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,132 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:09,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:09,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:55:09,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:09,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:55:09,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-28 09:55:09,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,163 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:55:09,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:09,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:09,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:55:09,173 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:55:09,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:09,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,194 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:55:09,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:55:09,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:09,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-28 09:55:09,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,231 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:55:09,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:55:09,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:55:09,689 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:55:09,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:09,693 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:55:09,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:55:09,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:55:09,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:55:09,693 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:55:09,693 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,693 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:55:09,694 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:55:09,694 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2021-10-28 09:55:09,694 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:55:09,694 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:55:09,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:55:09,810 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:55:09,811 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:55:09,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,812 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,815 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 [2021-10-28 09:55:09,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:09,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:09,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:09,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:09,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:09,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:09,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:09,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:55:09,842 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:09,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:09,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,875 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,878 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 [2021-10-28 09:55:09,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:09,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:09,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:09,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:09,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:09,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:55:09,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:09,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:09,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:09,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:09,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:09,943 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:09,947 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 [2021-10-28 09:55:09,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:55:09,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:09,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:09,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:09,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:09,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:09,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:09,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:09,970 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:10,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:10,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:10,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:10,009 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:10,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:55:10,015 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 [2021-10-28 09:55:10,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:10,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:10,024 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:10,024 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:10,024 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:10,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:10,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:10,042 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:10,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:10,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:10,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:10,075 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:10,080 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 [2021-10-28 09:55:10,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:10,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:55:10,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:10,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:10,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:10,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:55:10,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:55:10,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:55:10,102 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:10,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:10,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:10,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:10,139 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:10,141 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 [2021-10-28 09:55:10,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:10,150 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:10,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:10,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:10,153 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:55:10,153 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:55:10,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:55:10,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:55:10,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:10,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:10,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:10,211 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:10,213 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 [2021-10-28 09:55:10,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:55:10,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:55:10,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:55:10,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:55:10,228 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:55:10,228 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:55:10,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:55:10,246 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:55:10,257 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-28 09:55:10,257 INFO L444 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-28 09:55:10,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:55:10,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:10,259 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:10,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:55:10,263 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:55:10,293 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-28 09:55:10,293 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:55:10,294 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2021-10-28 09:55:10,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:10,334 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 09:55:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:55:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:10,474 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:55:10,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:10,476 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-28 09:55:10,476 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:55:10,506 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 21 states and 27 transitions. Complement of second has 6 states. [2021-10-28 09:55:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:55:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:55:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-10-28 09:55:10,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-28 09:55:10,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:10,532 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:55:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:10,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:55:10,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:10,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:10,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:10,672 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:55:10,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:10,673 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-28 09:55:10,674 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:55:10,694 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 21 states and 27 transitions. Complement of second has 6 states. [2021-10-28 09:55:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:55:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:55:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-10-28 09:55:10,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-28 09:55:10,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:10,696 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:55:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:10,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:55:10,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:10,812 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:55:10,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:10,813 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-28 09:55:10,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:55:10,841 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 23 states and 30 transitions. Complement of second has 5 states. [2021-10-28 09:55:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:55:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:55:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 09:55:10,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-28 09:55:10,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:10,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2021-10-28 09:55:10,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:10,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2021-10-28 09:55:10,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:55:10,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2021-10-28 09:55:10,844 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:55:10,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2021-10-28 09:55:10,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:55:10,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:55:10,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:55:10,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:55:10,845 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:55:10,845 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:55:10,845 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:55:10,845 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:55:10,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:55:10,845 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:55:10,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:55:10,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:55:10 BoogieIcfgContainer [2021-10-28 09:55:10,851 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:55:10,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:55:10,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:55:10,852 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:55:10,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:04" (3/4) ... [2021-10-28 09:55:10,855 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:55:10,855 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:55:10,857 INFO L168 Benchmark]: Toolchain (without parser) took 6885.44 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 63.3 MB in the beginning and 78.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:10,857 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 79.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:10,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.54 ms. Allocated memory is still 104.9 MB. Free memory was 63.1 MB in the beginning and 80.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:10,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.71 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:10,858 INFO L168 Benchmark]: Boogie Preprocessor took 17.04 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.9 MB in the end (delta: 906.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:10,859 INFO L168 Benchmark]: RCFGBuilder took 265.49 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 69.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:10,859 INFO L168 Benchmark]: BuchiAutomizer took 6299.93 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.9 MB in the beginning and 78.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:10,859 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 125.8 MB. Free memory is still 78.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:10,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 79.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.54 ms. Allocated memory is still 104.9 MB. Free memory was 63.1 MB in the beginning and 80.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.71 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.04 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.9 MB in the end (delta: 906.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 265.49 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 69.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6299.93 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 69.9 MB in the beginning and 78.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.22 ms. Allocated memory is still 125.8 MB. Free memory is still 78.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 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 k + -1 * i and consists of 6 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.0s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 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: 3/4 HoareTripleCheckerStatistics: 29 SDtfs, 54 SDslu, 9 SDs, 0 SdLazy, 111 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax158 hnf98 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf92 smp100 dnf100 smp100 tf105 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:55:10,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:11,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d7b88f-abaa-46bb-a3f0-670c2104c260/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...