./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Ackermann-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Ackermann-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX --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 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:51,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:51,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:51,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:51,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:51,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:51,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:51,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:51,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:51,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:51,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:51,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:51,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:51,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:51,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:51,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:51,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:51,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:51,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:51,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:51,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:51,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:51,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:51,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:51,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:51,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:51,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:51,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:51,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:51,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:51,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:51,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:51,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:51,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:51,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:51,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:51,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:51,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:51,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:51,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:51,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:51,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-09 08:29:51,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:51,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:51,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:51,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:51,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:51,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:51,353 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:51,353 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 08:29:51,353 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 08:29:51,354 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 08:29:51,355 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 08:29:51,355 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 08:29:51,355 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 08:29:51,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:51,356 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:29:51,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:51,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:51,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 08:29:51,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 08:29:51,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 08:29:51,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:29:51,358 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 08:29:51,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:51,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 08:29:51,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:51,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:51,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:51,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:51,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:51,362 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 08:29:51,363 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_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 [2021-11-09 08:29:51,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:51,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:51,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:51,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:51,769 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:51,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-crafted/Ackermann-2.c [2021-11-09 08:29:51,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/data/ab34ff4aa/d6537f769cf04ea9b997dadcc05e9bfd/FLAGa1fe7b97c [2021-11-09 08:29:52,379 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:52,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/sv-benchmarks/c/termination-crafted/Ackermann-2.c [2021-11-09 08:29:52,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/data/ab34ff4aa/d6537f769cf04ea9b997dadcc05e9bfd/FLAGa1fe7b97c [2021-11-09 08:29:52,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/data/ab34ff4aa/d6537f769cf04ea9b997dadcc05e9bfd [2021-11-09 08:29:52,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:52,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:29:52,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:52,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:52,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:52,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b69405a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52, skipping insertion in model container [2021-11-09 08:29:52,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:52,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:53,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:53,044 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:53,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:53,084 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:53,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53 WrapperNode [2021-11-09 08:29:53,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:53,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:53,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:29:53,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:29:53,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:53,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:53,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:53,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:53,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:53,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:53,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:53,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:53,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:53,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:53,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2021-11-09 08:29:53,249 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2021-11-09 08:29:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:53,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:29:53,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:29:53,479 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:29:53,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:53 BoogieIcfgContainer [2021-11-09 08:29:53,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:29:53,483 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 08:29:53,483 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 08:29:53,488 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 08:29:53,489 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:29:53,489 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 08:29:52" (1/3) ... [2021-11-09 08:29:53,491 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ff598ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:29:53, skipping insertion in model container [2021-11-09 08:29:53,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:29:53,492 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53" (2/3) ... [2021-11-09 08:29:53,492 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ff598ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:29:53, skipping insertion in model container [2021-11-09 08:29:53,492 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:29:53,493 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:53" (3/3) ... [2021-11-09 08:29:53,494 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ackermann-2.c [2021-11-09 08:29:53,566 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 08:29:53,583 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 08:29:53,583 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 08:29:53,583 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 08:29:53,583 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 08:29:53,583 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 08:29:53,584 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 08:29:53,584 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 08:29:53,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:29:53,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:29:53,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:29:53,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:29:53,655 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-09 08:29:53,656 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 08:29:53,656 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 08:29:53,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:29:53,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:29:53,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:29:53,662 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:29:53,663 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-09 08:29:53,663 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 08:29:53,671 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~x~0, main_~y~0, main_~r~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 17#L19true assume !!(main_~x~0 <= 28); 18#L20true assume !!(main_~y~0 <= 3); 14#L21true assume !(main_~x~0 < 0 || main_~y~0 < 0); 19#L24true call main_#t~ret5 := Ack(main_~x~0, main_~y~0);< 11#AckENTRYtrue [2021-11-09 08:29:53,671 INFO L793 eck$LassoCheckResult]: Loop: 11#AckENTRYtrue ~m := #in~m;~n := #in~n; 8#L10true assume !(0 == ~m); 9#L11true assume 0 == ~n; 16#L11-1true call #t~ret0 := Ack(~m - 1, 1);< 11#AckENTRYtrue [2021-11-09 08:29:53,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:53,679 INFO L85 PathProgramCache]: Analyzing trace with hash 44057088, now seen corresponding path program 1 times [2021-11-09 08:29:53,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:53,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094721370] [2021-11-09 08:29:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:53,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,833 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash 927619, now seen corresponding path program 1 times [2021-11-09 08:29:53,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:53,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047834076] [2021-11-09 08:29:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:53,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,913 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,934 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1420775938, now seen corresponding path program 1 times [2021-11-09 08:29:53,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:53,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583555569] [2021-11-09 08:29:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:53,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,974 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,986 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:54,150 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:54,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:54,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:54,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:54,151 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:29:54,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:54,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:54,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Loop [2021-11-09 08:29:54,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:54,153 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:54,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:54,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:54,301 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:29:54,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-09 08:29:54,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,341 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:54,342 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:54,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-09 08:29:54,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-09 08:29:54,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:29:54,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,572 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:54,572 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=-2} Honda state: {Ack_#in~m=-2} Generalized eigenvectors: [{Ack_#in~m=0}, {Ack_#in~m=0}, {Ack_#in~m=-1}] Lambdas: [15, 9, 1] Nus: [0, 0] [2021-11-09 08:29:54,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-09 08:29:54,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:54,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:54,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-09 08:29:54,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:54,751 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:54,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-09 08:29:54,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,819 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:54,819 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:54,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-09 08:29:54,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:54,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:54,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,908 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-09 08:29:54,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:54,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:54,951 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:54,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:54,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:54,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:54,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:55,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-09 08:29:55,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,045 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-09 08:29:55,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:29:55,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:55,099 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:29:55,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,137 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:55,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:55,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:55,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:55,137 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:29:55,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:55,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:55,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Loop [2021-11-09 08:29:55,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:55,138 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:55,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:55,263 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:55,277 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:29:55,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,281 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:55,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:55,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-09 08:29:55,311 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:55,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,355 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:55,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,375 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:55,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-09 08:29:55,386 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:55,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,413 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-09 08:29:55,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,424 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 08:29:55,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,427 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-09 08:29:55,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,440 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:55,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-09 08:29:55,470 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:55,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:55,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,491 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:55,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,517 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-09 08:29:55,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:55,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:55,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,543 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:55,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-09 08:29:55,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:55,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:55,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,595 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:55,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,624 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-09 08:29:55,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:55,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:55,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,643 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:55,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,671 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-09 08:29:55,673 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:29:55,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:55,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:55,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:55,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:55,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:55,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:55,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:55,710 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:29:55,714 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:29:55,715 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:29:55,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:55,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:55,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:55,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-09 08:29:55,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:29:55,723 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:29:55,724 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:29:55,724 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#in~n) = -2*Ack_#in~n + 1 Supporting invariants [] [2021-11-09 08:29:55,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:55,748 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:29:55,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:55,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:29:55,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:55,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:29:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:55,921 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 08:29:55,923 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:55,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-11-09 08:29:56,057 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4). Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 63 transitions. Complement of second has 12 states. [2021-11-09 08:29:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-09 08:29:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-11-09 08:29:56,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 4 letters. [2021-11-09 08:29:56,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:56,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 9 letters. Loop has 4 letters. [2021-11-09 08:29:56,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:56,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 8 letters. [2021-11-09 08:29:56,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:56,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 63 transitions. [2021-11-09 08:29:56,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:29:56,077 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 29 states and 37 transitions. [2021-11-09 08:29:56,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-11-09 08:29:56,079 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-11-09 08:29:56,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2021-11-09 08:29:56,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:29:56,080 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-11-09 08:29:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2021-11-09 08:29:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2021-11-09 08:29:56,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 08:29:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2021-11-09 08:29:56,109 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2021-11-09 08:29:56,109 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2021-11-09 08:29:56,109 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-09 08:29:56,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2021-11-09 08:29:56,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:29:56,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:29:56,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:29:56,111 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:56,111 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 08:29:56,112 INFO L791 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~x~0, main_~y~0, main_~r~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 130#L19 assume !!(main_~x~0 <= 28); 148#L20 assume !!(main_~y~0 <= 3); 147#L21 assume !(main_~x~0 < 0 || main_~y~0 < 0); 133#L24 call main_#t~ret5 := Ack(main_~x~0, main_~y~0);< 141#AckENTRY ~m := #in~m;~n := #in~n; 137#L10 assume !(0 == ~m); 138#L11 assume !(0 == ~n); 134#L12 [2021-11-09 08:29:56,112 INFO L793 eck$LassoCheckResult]: Loop: 134#L12 call #t~ret1 := Ack(~m, ~n - 1);< 136#AckENTRY ~m := #in~m;~n := #in~n; 150#L10 assume !(0 == ~m); 149#L11 assume !(0 == ~n); 134#L12 [2021-11-09 08:29:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1755283834, now seen corresponding path program 1 times [2021-11-09 08:29:56,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:56,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348213997] [2021-11-09 08:29:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:56,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:56,120 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:56,127 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:56,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2085504, now seen corresponding path program 1 times [2021-11-09 08:29:56,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:56,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392057012] [2021-11-09 08:29:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:56,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:56,134 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:56,139 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash -563902843, now seen corresponding path program 1 times [2021-11-09 08:29:56,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:56,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148738637] [2021-11-09 08:29:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:56,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:56,150 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:56,160 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:56,272 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:56,273 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:56,273 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:56,273 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:56,273 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:29:56,273 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,273 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:56,274 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:56,274 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Loop [2021-11-09 08:29:56,274 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:56,274 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:56,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:56,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:56,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:56,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:56,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:56,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:56,389 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:56,389 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:29:56,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:56,403 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:56,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-09 08:29:56,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:56,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:56,436 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:56,436 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:56,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:56,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:56,460 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:56,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-09 08:29:56,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:56,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:56,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:56,471 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:56,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-11-09 08:29:56,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:56,494 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:56,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-09 08:29:56,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:56,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:56,507 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:56,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:56,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-11-09 08:29:56,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:56,544 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:56,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-09 08:29:56,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:56,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:56,558 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:56,558 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:56,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:56,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:56,601 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:56,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:56,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:56,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-09 08:29:56,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:56,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:56,683 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:56,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:29:56,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:56,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-09 08:29:56,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:56,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=0, Ack_~n=-7} Honda state: {Ack_#in~n=0, Ack_~n=-7} Generalized eigenvectors: [{Ack_#in~n=1, Ack_~n=0}, {Ack_#in~n=-8, Ack_~n=0}, {Ack_#in~n=-1, Ack_~n=-1}] Lambdas: [8, 0, 1] Nus: [1, 0] [2021-11-09 08:29:56,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:56,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:56,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:56,951 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:56,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-09 08:29:56,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:56,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:56,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:56,970 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=-3, Ack_#in~m=-3} Honda state: {Ack_~m=-3, Ack_#in~m=-3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:56,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-11-09 08:29:57,191 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:57,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:57,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:57,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:57,191 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:29:57,192 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,192 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:57,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:57,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Lasso [2021-11-09 08:29:57,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:57,192 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:57,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,485 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:57,486 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:29:57,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,491 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-09 08:29:57,510 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,510 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:57,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:57,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,551 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-09 08:29:57,575 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,575 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret5=0} Honda state: {ULTIMATE.start_main_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:57,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:57,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,623 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-09 08:29:57,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:57,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:57,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,701 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-09 08:29:57,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,735 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:57,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:57,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,775 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-09 08:29:57,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,815 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:57,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:57,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,855 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-09 08:29:57,883 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,883 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:57,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:57,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,930 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-09 08:29:57,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~r~0=0} Honda state: {ULTIMATE.start_main_~r~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:57,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-11-09 08:29:57,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,994 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-09 08:29:57,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,017 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:58,017 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0, Ack_#in~m=0} Honda state: {Ack_~m=3, Ack_#in~m=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:58,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-11-09 08:29:58,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,042 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-09 08:29:58,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:58,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:58,053 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: [] [2021-11-09 08:29:58,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-11-09 08:29:58,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,078 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-09 08:29:58,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:58,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,089 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:58,089 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:58,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-11-09 08:29:58,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,115 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-09 08:29:58,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:58,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:58,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:58,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-11-09 08:29:58,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,158 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-09 08:29:58,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:58,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,172 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:58,172 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret6=0} Honda state: {ULTIMATE.start_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:58,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:58,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,197 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-09 08:29:58,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:58,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-11-09 08:29:58,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,266 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-09 08:29:58,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:29:58,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:00,474 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:00,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,477 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:00,478 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:00,478 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:00,478 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:00,478 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:00,478 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,478 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:00,478 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:00,478 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Lasso [2021-11-09 08:30:00,478 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:00,478 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:00,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,679 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:00,680 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:00,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,681 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,683 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:00,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:00,692 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:00,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:00,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:00,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:00,693 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:00,693 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:00,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-09 08:30:00,708 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:00,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,744 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,753 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:00,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:00,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:00,764 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 08:30:00,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:00,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-09 08:30:00,785 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-11-09 08:30:00,785 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-11-09 08:30:00,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:00,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,855 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:00,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:00,869 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:00,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:00,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:00,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:00,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:00,870 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:00,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-09 08:30:00,883 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:00,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,924 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,929 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:00,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:00,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:00,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:00,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:00,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:00,941 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:00,941 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:00,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-09 08:30:00,963 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,003 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:01,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-09 08:30:01,031 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,074 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-09 08:30:01,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,093 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:01,093 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,102 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,144 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,146 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-09 08:30:01,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:01,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,183 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,222 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,243 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:01,243 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-09 08:30:01,267 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-11-09 08:30:01,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,301 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-09 08:30:01,305 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,313 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:01,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,327 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,351 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-09 08:30:01,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,363 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:01,363 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,364 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-11-09 08:30:01,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,391 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-09 08:30:01,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:01,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-11-09 08:30:01,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,455 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-09 08:30:01,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 08:30:01,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,465 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 08:30:01,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,493 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-11-09 08:30:01,493 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-11-09 08:30:01,526 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:01,555 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2021-11-09 08:30:01,555 INFO L444 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 5 variables to zero. [2021-11-09 08:30:01,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,557 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-09 08:30:01,566 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:01,578 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-11-09 08:30:01,578 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:01,578 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_~n) = 1*Ack_~n Supporting invariants [2*Ack_~n - 1 >= 0] [2021-11-09 08:30:01,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-11-09 08:30:01,605 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-11-09 08:30:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,953 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2021-11-09 08:30:01,954 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 8 Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,046 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 8. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 45 transitions. Complement of second has 12 states. [2021-11-09 08:30:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2021-11-09 08:30:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2021-11-09 08:30:02,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2021-11-09 08:30:02,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,049 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:02,309 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 3 loop predicates [2021-11-09 08:30:02,309 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 8 Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 8. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 67 transitions. Complement of second has 20 states. [2021-11-09 08:30:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 18 transitions. [2021-11-09 08:30:02,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2021-11-09 08:30:02,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-09 08:30:02,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2021-11-09 08:30:02,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,452 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 67 transitions. [2021-11-09 08:30:02,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:30:02,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 42 states and 59 transitions. [2021-11-09 08:30:02,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-11-09 08:30:02,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-11-09 08:30:02,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 59 transitions. [2021-11-09 08:30:02,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:02,461 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 59 transitions. [2021-11-09 08:30:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 59 transitions. [2021-11-09 08:30:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-09 08:30:02,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 8 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-09 08:30:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2021-11-09 08:30:02,467 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 45 transitions. [2021-11-09 08:30:02,467 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 45 transitions. [2021-11-09 08:30:02,467 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-09 08:30:02,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 45 transitions. [2021-11-09 08:30:02,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:30:02,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:02,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:02,470 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:02,470 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 08:30:02,470 INFO L791 eck$LassoCheckResult]: Stem: 392#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~x~0, main_~y~0, main_~r~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 393#L19 assume !!(main_~x~0 <= 28); 412#L20 assume !!(main_~y~0 <= 3); 410#L21 assume !(main_~x~0 < 0 || main_~y~0 < 0); 389#L24 call main_#t~ret5 := Ack(main_~x~0, main_~y~0);< 405#AckENTRY ~m := #in~m;~n := #in~n; 394#L10 assume !(0 == ~m); 395#L11 assume !(0 == ~n); 398#L12 call #t~ret1 := Ack(~m, ~n - 1);< 404#AckENTRY ~m := #in~m;~n := #in~n; 417#L10 assume !(0 == ~m); 418#L11 assume 0 == ~n; 401#L11-1 [2021-11-09 08:30:02,470 INFO L793 eck$LassoCheckResult]: Loop: 401#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 390#AckENTRY ~m := #in~m;~n := #in~n; 419#L10 assume !(0 == ~m); 420#L11 assume 0 == ~n; 401#L11-1 [2021-11-09 08:30:02,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,471 INFO L85 PathProgramCache]: Analyzing trace with hash -563902846, now seen corresponding path program 1 times [2021-11-09 08:30:02,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82796281] [2021-11-09 08:30:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,483 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,492 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2025919, now seen corresponding path program 2 times [2021-11-09 08:30:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785991098] [2021-11-09 08:30:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:02,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:02,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785991098] [2021-11-09 08:30:02,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785991098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:02,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:02,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:30:02,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966555576] [2021-11-09 08:30:02,565 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 08:30:02,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:02,575 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. cyclomatic complexity: 15 Second operand has 4 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:02,630 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2021-11-09 08:30:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:02,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 63 transitions. [2021-11-09 08:30:02,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-11-09 08:30:02,640 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 45 states and 61 transitions. [2021-11-09 08:30:02,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-11-09 08:30:02,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-11-09 08:30:02,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 61 transitions. [2021-11-09 08:30:02,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:02,643 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2021-11-09 08:30:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 61 transitions. [2021-11-09 08:30:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-11-09 08:30:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 11 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (11), 6 states have call predecessors, (11), 8 states have call successors, (11) [2021-11-09 08:30:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2021-11-09 08:30:02,657 INFO L704 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-11-09 08:30:02,657 INFO L587 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-11-09 08:30:02,657 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-09 08:30:02,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 60 transitions. [2021-11-09 08:30:02,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-11-09 08:30:02,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:02,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:02,665 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:02,665 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2021-11-09 08:30:02,665 INFO L791 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~x~0, main_~y~0, main_~r~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 482#L19 assume !!(main_~x~0 <= 28); 503#L20 assume !!(main_~y~0 <= 3); 501#L21 assume !(main_~x~0 < 0 || main_~y~0 < 0); 480#L24 call main_#t~ret5 := Ack(main_~x~0, main_~y~0);< 504#AckENTRY ~m := #in~m;~n := #in~n; 516#L10 assume !(0 == ~m); 514#L11 assume !(0 == ~n); 485#L12 call #t~ret1 := Ack(~m, ~n - 1);< 497#AckENTRY ~m := #in~m;~n := #in~n; 483#L10 assume !(0 == ~m); 488#L11 assume 0 == ~n; 507#L11-1 [2021-11-09 08:30:02,666 INFO L793 eck$LassoCheckResult]: Loop: 507#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 508#AckENTRY ~m := #in~m;~n := #in~n; 510#L10 assume !(0 == ~m); 511#L11 assume !(0 == ~n); 495#L12 call #t~ret1 := Ack(~m, ~n - 1);< 479#AckENTRY ~m := #in~m;~n := #in~n; 519#L10 assume !(0 == ~m); 520#L11 assume 0 == ~n; 507#L11-1 [2021-11-09 08:30:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -563902846, now seen corresponding path program 2 times [2021-11-09 08:30:02,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59214218] [2021-11-09 08:30:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,689 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,716 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1623067714, now seen corresponding path program 1 times [2021-11-09 08:30:02,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314146692] [2021-11-09 08:30:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,724 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,733 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -214210241, now seen corresponding path program 1 times [2021-11-09 08:30:02,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754849584] [2021-11-09 08:30:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,747 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:03,005 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:03,006 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:03,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:03,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:03,006 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:03,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:03,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:03,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Loop [2021-11-09 08:30:03,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:03,006 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:03,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,103 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:03,103 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:03,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,104 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-09 08:30:03,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-11-09 08:30:03,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,158 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:03,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-09 08:30:03,445 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:03,445 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0, Ack_#in~m=0} Honda state: {Ack_~m=0, Ack_#in~m=0} Generalized eigenvectors: [{Ack_~m=0, Ack_#in~m=0}, {Ack_~m=-1, Ack_#in~m=-1}, {Ack_~m=0, Ack_#in~m=0}] Lambdas: [7, 1, 12] Nus: [0, 1] [2021-11-09 08:30:03,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-11-09 08:30:03,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,470 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-11-09 08:30:03,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,481 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:03,481 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:03,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-11-09 08:30:03,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,511 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-11-09 08:30:03,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:03,571 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:03,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:03,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,604 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-11-09 08:30:03,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,616 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:03,616 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:03,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-11-09 08:30:03,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,640 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-11-09 08:30:03,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:03,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=0, Ack_~n=0} Honda state: {Ack_#in~n=0, Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:03,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:03,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,687 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-11-09 08:30:03,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:03,699 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:03,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-11-09 08:30:04,014 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:04,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:04,014 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:04,014 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:04,014 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:04,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:04,015 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:04,015 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Lasso [2021-11-09 08:30:04,015 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:04,015 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:04,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,180 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:04,180 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:04,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,185 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:04,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:04,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-11-09 08:30:04,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:04,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~r~0=0} Honda state: {ULTIMATE.start_main_~r~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:04,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:04,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,244 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:04,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:04,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-11-09 08:30:04,256 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:04,256 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: [] [2021-11-09 08:30:04,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-11-09 08:30:04,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,277 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-11-09 08:30:04,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:04,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:04,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-11-09 08:30:04,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,317 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec808a7c-792d-4126-b6cf-74ca1c6fc1d8/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-11-09 08:30:04,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:04,318 INFO L160 nArgumentSynthesizer]: Using integer mode.