./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Ackermann-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:14:26,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:14:26,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:14:26,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:14:26,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:14:26,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:14:26,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:14:26,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:14:26,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:14:26,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:14:26,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:14:26,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:14:26,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:14:26,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:14:26,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:14:26,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:14:26,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:14:26,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:14:26,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:14:26,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:14:26,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:14:26,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:14:26,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:14:26,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:14:26,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:14:26,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:14:26,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:14:26,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:14:26,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:14:26,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:14:26,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:14:26,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:14:26,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:14:26,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:14:26,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:14:26,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:14:26,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:14:26,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:14:26,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:14:26,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:14:26,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:14:26,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 06:14:26,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:14:26,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:14:26,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:14:26,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:14:26,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:14:26,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:14:26,517 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:14:26,518 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:14:26,518 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:14:26,518 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:14:26,519 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:14:26,520 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:14:26,520 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:14:26,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:14:26,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:14:26,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:14:26,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:14:26,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:14:26,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:14:26,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:14:26,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:14:26,522 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:14:26,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:14:26,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:14:26,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:14:26,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:14:26,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:14:26,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:14:26,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:14:26,526 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:14:26,526 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_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 [2021-11-20 06:14:26,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:14:26,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:14:26,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:14:26,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:14:26,820 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:14:26,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted/Ackermann-2.c [2021-11-20 06:14:26,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/data/d4919751d/348ff934ff874eaa8467f3f206f13e41/FLAG3b5a1fb94 [2021-11-20 06:14:27,493 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:14:27,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/sv-benchmarks/c/termination-crafted/Ackermann-2.c [2021-11-20 06:14:27,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/data/d4919751d/348ff934ff874eaa8467f3f206f13e41/FLAG3b5a1fb94 [2021-11-20 06:14:27,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/data/d4919751d/348ff934ff874eaa8467f3f206f13e41 [2021-11-20 06:14:27,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:14:27,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:14:27,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:14:27,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:14:27,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:14:27,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:14:27" (1/1) ... [2021-11-20 06:14:27,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fec7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:27, skipping insertion in model container [2021-11-20 06:14:27,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:14:27" (1/1) ... [2021-11-20 06:14:27,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:14:27,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:14:28,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:14:28,060 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:14:28,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:14:28,096 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:14:28,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28 WrapperNode [2021-11-20 06:14:28,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:14:28,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:14:28,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:14:28,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:14:28,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,139 INFO L137 Inliner]: procedures = 5, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-11-20 06:14:28,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:14:28,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:14:28,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:14:28,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:14:28,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:14:28,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:14:28,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:14:28,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:14:28,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (1/1) ... [2021-11-20 06:14:28,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:28,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:28,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:28,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:14:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2021-11-20 06:14:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2021-11-20 06:14:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:14:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:14:28,358 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:14:28,360 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:14:28,520 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:14:28,536 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:14:28,537 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:14:28,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:14:28 BoogieIcfgContainer [2021-11-20 06:14:28,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:14:28,542 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:14:28,542 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:14:28,547 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:14:28,550 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:14:28,551 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:14:27" (1/3) ... [2021-11-20 06:14:28,552 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22494ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:14:28, skipping insertion in model container [2021-11-20 06:14:28,552 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:14:28,552 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:14:28" (2/3) ... [2021-11-20 06:14:28,553 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22494ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:14:28, skipping insertion in model container [2021-11-20 06:14:28,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:14:28,553 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:14:28" (3/3) ... [2021-11-20 06:14:28,554 INFO L388 chiAutomizerObserver]: Analyzing ICFG Ackermann-2.c [2021-11-20 06:14:28,610 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:14:28,610 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:14:28,610 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:14:28,611 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:14:28,611 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:14:28,611 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:14:28,611 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:14:28,611 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:14:28,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-20 06:14:28,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:14:28,659 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:14:28,659 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:14:28,668 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:14:28,668 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 06:14:28,668 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:14:28,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-20 06:14:28,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:14:28,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:14:28,675 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:14:28,676 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:14:28,676 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 06:14:28,691 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 18#L19true assume !!(main_~x~0#1 <= 28); 19#L20true assume !!(main_~y~0#1 <= 3); 15#L21true assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 20#L24true call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 12#AckENTRYtrue [2021-11-20 06:14:28,692 INFO L793 eck$LassoCheckResult]: Loop: 12#AckENTRYtrue ~m := #in~m;~n := #in~n; 9#L10true assume !(0 == ~m); 10#L11true assume 0 == ~n; 17#L11-1true call #t~ret0 := Ack(~m - 1, 1);< 12#AckENTRYtrue [2021-11-20 06:14:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1333323188, now seen corresponding path program 1 times [2021-11-20 06:14:28,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:28,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924788925] [2021-11-20 06:14:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:28,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:28,837 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:28,863 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash 927620, now seen corresponding path program 1 times [2021-11-20 06:14:28,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373400273] [2021-11-20 06:14:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:28,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:28,889 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:28,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:28,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2020015031, now seen corresponding path program 1 times [2021-11-20 06:14:28,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:28,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529369488] [2021-11-20 06:14:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:28,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:28,957 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:28,981 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:29,206 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:14:29,207 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:14:29,207 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:14:29,207 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:14:29,207 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:14:29,207 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,208 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:14:29,208 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:14:29,208 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Loop [2021-11-20 06:14:29,208 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:14:29,209 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:14:29,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,326 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:14:29,327 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:14:29,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:14:29,380 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:29,380 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:29,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-20 06:14:29,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:14:29,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-11-20 06:14:29,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:14:29,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:14:29,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,559 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:29,559 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] [2021-11-20 06:14:29,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:29,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 06:14:29,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:29,610 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:29,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:29,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 06:14:29,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:29,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:29,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:29,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 06:14:29,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:29,711 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:29,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-11-20 06:14:29,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 06:14:29,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,775 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:29,775 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:29,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:29,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,804 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 06:14:29,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:29,825 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:29,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-11-20 06:14:29,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 06:14:29,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:29,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:29,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:29,897 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:29,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 06:14:29,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:14:29,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:29,930 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:14:29,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:29,955 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:14:29,956 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:14:29,956 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:14:29,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:14:29,956 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:14:29,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:29,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:14:29,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:14:29,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Loop [2021-11-20 06:14:29,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:14:29,957 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:14:29,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:29,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:30,078 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:14:30,082 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:14:30,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:30,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:30,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:30,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 06:14:30,128 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:30,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,173 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:30,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:30,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,193 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:30,193 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 06:14:30,215 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:30,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,246 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,256 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:30,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 06:14:30,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,264 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-20 06:14:30,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,266 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-20 06:14:30,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,287 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:30,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,308 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 06:14:30,312 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:30,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:30,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:30,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,346 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:30,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,367 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 06:14:30,380 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:30,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:30,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:30,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,395 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:30,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,416 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 06:14:30,417 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:30,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,425 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,425 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:30,425 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:30,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,427 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:30,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,468 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 06:14:30,470 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 [2021-11-20 06:14:30,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:30,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:30,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,479 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:30,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-11-20 06:14:30,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,502 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 06:14:30,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:30,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:30,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:30,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:30,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:30,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:30,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:30,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:30,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:14:30,530 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:14:30,530 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:14:30,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:30,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:30,533 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:30,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 06:14:30,535 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:14:30,535 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:14:30,535 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:14:30,536 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#in~n) = -2*Ack_#in~n + 1 Supporting invariants [] [2021-11-20 06:14:30,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,557 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:14:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:30,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:14:30,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:30,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:14:30,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:30,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:30,794 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-20 06:14:30,795 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-20 06:14:30,981 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 49 states and 64 transitions. Complement of second has 12 states. [2021-11-20 06:14:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-20 06:14:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-20 06:14:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-11-20 06:14:30,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2021-11-20 06:14:31,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:14:31,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2021-11-20 06:14:31,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:14:31,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 6 letters. Loop has 8 letters. [2021-11-20 06:14:31,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:14:31,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2021-11-20 06:14:31,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:14:31,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 30 states and 38 transitions. [2021-11-20 06:14:31,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-11-20 06:14:31,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-20 06:14:31,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 38 transitions. [2021-11-20 06:14:31,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:14:31,038 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-11-20 06:14:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 38 transitions. [2021-11-20 06:14:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-11-20 06:14:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-11-20 06:14:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-11-20 06:14:31,074 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-11-20 06:14:31,074 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-11-20 06:14:31,074 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:14:31,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 29 transitions. [2021-11-20 06:14:31,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:14:31,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:14:31,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:14:31,077 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:31,077 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 06:14:31,077 INFO L791 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 135#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 142#L19 assume !!(main_~x~0#1 <= 28); 154#L20 assume !!(main_~y~0#1 <= 3); 153#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 140#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 147#AckENTRY ~m := #in~m;~n := #in~n; 143#L10 assume !(0 == ~m); 144#L11 assume !(0 == ~n); 138#L12 [2021-11-20 06:14:31,077 INFO L793 eck$LassoCheckResult]: Loop: 138#L12 call #t~ret1 := Ack(~m, ~n - 1);< 141#AckENTRY ~m := #in~m;~n := #in~n; 155#L10 assume !(0 == ~m); 156#L11 assume !(0 == ~n); 138#L12 [2021-11-20 06:14:31,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1173540434, now seen corresponding path program 1 times [2021-11-20 06:14:31,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:31,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260709387] [2021-11-20 06:14:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:31,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:31,089 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:31,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2115295, now seen corresponding path program 1 times [2021-11-20 06:14:31,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:31,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162355321] [2021-11-20 06:14:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:31,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:31,111 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:31,120 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1483834544, now seen corresponding path program 1 times [2021-11-20 06:14:31,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:31,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048054576] [2021-11-20 06:14:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:31,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:31,154 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:31,181 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:31,311 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:14:31,311 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:14:31,311 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:14:31,311 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:14:31,311 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:14:31,311 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:31,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:14:31,312 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:14:31,312 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Loop [2021-11-20 06:14:31,312 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:14:31,312 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:14:31,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:31,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:31,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:31,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:31,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:31,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:31,418 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:14:31,418 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:14:31,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:31,423 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:31,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-20 06:14:31,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:31,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:31,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:31,456 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:31,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:31,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:31,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:31,496 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:31,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:31,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:31,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-20 06:14:31,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:31,532 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:31,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:31,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:31,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:31,564 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:31,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 06:14:31,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:31,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:31,575 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:31,575 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:31,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:31,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:31,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:31,616 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:31,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:31,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:31,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-20 06:14:31,640 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:31,640 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:31,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:31,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:31,677 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:31,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:31,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:31,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 06:14:31,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:31,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:31,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:31,752 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:31,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:14:31,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:31,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-20 06:14:32,126 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,126 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] [2021-11-20 06:14:32,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:32,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:32,174 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:32,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:32,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:32,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-20 06:14:32,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,201 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: [] [2021-11-20 06:14:32,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:32,455 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:14:32,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:14:32,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:14:32,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:14:32,456 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:14:32,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:14:32,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:14:32,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Lasso [2021-11-20 06:14:32,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:14:32,456 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:14:32,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:32,690 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:14:32,690 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:14:32,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:32,692 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:32,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:32,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:32,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-20 06:14:32,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,724 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:32,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:32,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:32,760 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:32,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:32,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:32,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-20 06:14:32,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,788 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:32,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:32,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:32,824 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:32,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:32,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:32,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-20 06:14:32,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,840 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:32,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-11-20 06:14:32,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:32,860 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:32,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-20 06:14:32,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:32,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:32,870 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,871 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~r~0#1=0} Honda state: {ULTIMATE.start_main_~r~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:32,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-11-20 06:14:32,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:32,891 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:32,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-20 06:14:32,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:32,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:32,906 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,906 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: [] [2021-11-20 06:14:32,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:32,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:32,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:32,929 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:32,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-20 06:14:32,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:32,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:32,963 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:32,964 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:33,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:33,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:33,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:33,005 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:33,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:33,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:33,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-20 06:14:33,031 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:33,032 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:33,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:33,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:33,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:33,079 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:33,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:33,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:33,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-20 06:14:33,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:33,118 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:33,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-11-20 06:14:33,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:33,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:33,143 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:33,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-20 06:14:33,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:33,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:33,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:33,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:33,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:33,224 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:33,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:14:33,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:33,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-20 06:14:35,122 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:14:35,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:35,125 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:14:35,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:14:35,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:14:35,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:14:35,126 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:14:35,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:14:35,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:14:35,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Lasso [2021-11-20 06:14:35,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:14:35,126 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:14:35,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:35,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:14:35,348 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:14:35,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,350 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,371 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:35,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:35,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:35,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:35,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-20 06:14:35,395 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:35,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:35,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,445 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,460 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-20 06:14:35,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-20 06:14:35,484 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-11-20 06:14:35,484 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-11-20 06:14:35,511 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:35,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-11-20 06:14:35,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,546 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-20 06:14:35,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:35,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:35,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:35,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:35,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:35,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-11-20 06:14:35,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,589 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-20 06:14:35,591 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,600 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:35,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:35,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:35,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:35,602 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:35,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:35,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,628 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-20 06:14:35,630 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:35,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:35,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:35,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:35,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:35,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:35,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,709 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-20 06:14:35,713 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:35,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:35,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:35,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:35,733 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:35,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:35,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,761 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-20 06:14:35,764 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:14:35,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:14:35,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:14:35,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:14:35,786 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:14:35,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-11-20 06:14:35,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,820 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-20 06:14:35,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:14:35,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:14:35,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:14:35,831 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-20 06:14:35,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:14:35,857 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-11-20 06:14:35,857 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-11-20 06:14:35,895 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:14:35,922 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2021-11-20 06:14:35,922 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 4 variables to zero. [2021-11-20 06:14:35,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:35,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:35,928 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:35,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:14:35,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-20 06:14:35,967 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-11-20 06:14:35,967 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:14:35,967 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_~n) = 1*Ack_~n Supporting invariants [2*Ack_~n - 1 >= 0] [2021-11-20 06:14:36,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:36,014 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-11-20 06:14:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:36,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:14:36,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:36,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:14:36,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:36,274 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 [2021-11-20 06:14:36,274 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8 Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-20 06:14:36,373 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 35 states and 46 transitions. Complement of second has 12 states. [2021-11-20 06:14:36,375 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 [2021-11-20 06:14:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-20 06:14:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 13 transitions. [2021-11-20 06:14:36,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2021-11-20 06:14:36,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:14:36,378 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:14:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:36,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:14:36,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:36,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:14:36,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:36,618 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 [2021-11-20 06:14:36,619 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8 Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-20 06:14:36,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:36,756 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 49 states and 68 transitions. Complement of second has 20 states. [2021-11-20 06:14:36,757 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 [2021-11-20 06:14:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-20 06:14:36,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2021-11-20 06:14:36,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 9 letters. Loop has 4 letters. [2021-11-20 06:14:36,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:14:36,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-11-20 06:14:36,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:14:36,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 9 letters. Loop has 8 letters. [2021-11-20 06:14:36,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:14:36,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 68 transitions. [2021-11-20 06:14:36,764 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:14:36,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 43 states and 60 transitions. [2021-11-20 06:14:36,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-11-20 06:14:36,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-11-20 06:14:36,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 60 transitions. [2021-11-20 06:14:36,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:14:36,771 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 60 transitions. [2021-11-20 06:14:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 60 transitions. [2021-11-20 06:14:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2021-11-20 06:14:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-11-20 06:14:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2021-11-20 06:14:36,777 INFO L704 BuchiCegarLoop]: Abstraction has 34 states and 46 transitions. [2021-11-20 06:14:36,777 INFO L587 BuchiCegarLoop]: Abstraction has 34 states and 46 transitions. [2021-11-20 06:14:36,777 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 06:14:36,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 46 transitions. [2021-11-20 06:14:36,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 06:14:36,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:14:36,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:14:36,781 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:36,782 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 06:14:36,782 INFO L791 eck$LassoCheckResult]: Stem: 402#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 403#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 412#L19 assume !!(main_~x~0#1 <= 28); 427#L20 assume !!(main_~y~0#1 <= 3); 425#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 405#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 420#AckENTRY ~m := #in~m;~n := #in~n; 408#L10 assume !(0 == ~m); 409#L11 assume !(0 == ~n); 413#L12 call #t~ret1 := Ack(~m, ~n - 1);< 419#AckENTRY ~m := #in~m;~n := #in~n; 434#L10 assume !(0 == ~m); 435#L11 assume 0 == ~n; 416#L11-1 [2021-11-20 06:14:36,782 INFO L793 eck$LassoCheckResult]: Loop: 416#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 406#AckENTRY ~m := #in~m;~n := #in~n; 432#L10 assume !(0 == ~m); 433#L11 assume 0 == ~n; 416#L11-1 [2021-11-20 06:14:36,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1483834541, now seen corresponding path program 1 times [2021-11-20 06:14:36,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:36,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483865797] [2021-11-20 06:14:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:36,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,812 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2055710, now seen corresponding path program 2 times [2021-11-20 06:14:36,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:36,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243060816] [2021-11-20 06:14:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:36,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:36,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:36,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243060816] [2021-11-20 06:14:36,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243060816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:36,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:36,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:14:36,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228545764] [2021-11-20 06:14:36,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:36,877 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:14:36,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:36,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:36,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:36,882 INFO L87 Difference]: Start difference. First operand 34 states and 46 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) [2021-11-20 06:14:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:36,924 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-11-20 06:14:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:14:36,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-11-20 06:14:36,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-11-20 06:14:36,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2021-11-20 06:14:36,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-11-20 06:14:36,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-11-20 06:14:36,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2021-11-20 06:14:36,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:14:36,932 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2021-11-20 06:14:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2021-11-20 06:14:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-11-20 06:14:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 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) [2021-11-20 06:14:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2021-11-20 06:14:36,938 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2021-11-20 06:14:36,938 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2021-11-20 06:14:36,938 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 06:14:36,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 61 transitions. [2021-11-20 06:14:36,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-11-20 06:14:36,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:14:36,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:14:36,941 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:36,941 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2021-11-20 06:14:36,941 INFO L791 eck$LassoCheckResult]: Stem: 497#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 498#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 506#L19 assume !!(main_~x~0#1 <= 28); 521#L20 assume !!(main_~y~0#1 <= 3); 519#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 496#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 522#AckENTRY ~m := #in~m;~n := #in~n; 499#L10 assume !(0 == ~m); 500#L11 assume !(0 == ~n); 503#L12 call #t~ret1 := Ack(~m, ~n - 1);< 510#AckENTRY ~m := #in~m;~n := #in~n; 536#L10 assume !(0 == ~m); 526#L11 assume 0 == ~n; 508#L11-1 [2021-11-20 06:14:36,942 INFO L793 eck$LassoCheckResult]: Loop: 508#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 525#AckENTRY ~m := #in~m;~n := #in~n; 530#L10 assume !(0 == ~m); 531#L11 assume !(0 == ~n); 507#L12 call #t~ret1 := Ack(~m, ~n - 1);< 495#AckENTRY ~m := #in~m;~n := #in~n; 535#L10 assume !(0 == ~m); 534#L11 assume 0 == ~n; 508#L11-1 [2021-11-20 06:14:36,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1483834541, now seen corresponding path program 2 times [2021-11-20 06:14:36,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:36,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132818282] [2021-11-20 06:14:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:36,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,949 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,956 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:36,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash 119772412, now seen corresponding path program 1 times [2021-11-20 06:14:36,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:36,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081921344] [2021-11-20 06:14:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:36,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,963 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,969 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1170976168, now seen corresponding path program 1 times [2021-11-20 06:14:36,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309418040] [2021-11-20 06:14:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:36,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,979 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:14:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:14:36,991 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:14:37,194 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:14:37,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:14:37,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:14:37,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:14:37,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:14:37,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:14:37,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:14:37,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Loop [2021-11-20 06:14:37,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:14:37,195 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:14:37,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:37,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:37,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:37,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:37,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:37,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:37,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:14:37,293 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:14:37,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:37,294 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:37,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:37,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:37,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-20 06:14:37,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-11-20 06:14:37,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:37,365 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:37,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-20 06:14:37,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:14:37,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:37,622 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:37,622 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] [2021-11-20 06:14:37,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:37,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:37,649 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:37,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-20 06:14:37,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:37,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:37,662 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:37,662 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:37,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-11-20 06:14:37,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:37,687 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:37,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:37,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:37,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-20 06:14:37,700 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:37,700 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:37,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-11-20 06:14:37,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:37,731 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:37,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:37,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:37,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-20 06:14:37,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:37,752 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:37,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-11-20 06:14:37,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:37,774 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:37,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-20 06:14:37,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:37,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:37,790 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:37,790 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: [] [2021-11-20 06:14:37,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:37,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:37,811 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:37,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-20 06:14:37,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:37,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:37,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:37,829 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:37,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:38,078 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:14:38,078 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:14:38,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:14:38,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:14:38,079 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:14:38,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:38,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:14:38,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:14:38,079 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Lasso [2021-11-20 06:14:38,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:14:38,079 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:14:38,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:14:38,222 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:14:38,222 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:14:38,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:38,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:38,226 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:38,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-20 06:14:38,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:38,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:38,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:38,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:38,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:38,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:38,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:38,262 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:38,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-20 06:14:38,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:38,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:38,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:14:38,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:14:38,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-11-20 06:14:38,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:38,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:38,304 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:38,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-20 06:14:38,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:14:38,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:14:38,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-11-20 06:14:38,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:14:38,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:38,349 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:14:38,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27307a31-bc13-48f6-83e7-5920026e58ef/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-11-20 06:14:38,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:14:38,355 INFO L160 nArgumentSynthesizer]: Using integer mode.