./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD --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 32bit --witnessprinter.graph.data.programhash f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:54:12,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:54:12,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:54:12,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:54:12,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:54:12,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:54:12,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:54:12,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:54:12,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:54:12,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:54:12,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:54:12,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:54:12,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:54:12,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:54:12,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:54:12,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:54:12,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:54:12,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:54:12,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:54:12,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:54:12,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:54:12,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:54:12,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:54:12,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:54:12,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:54:12,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:54:12,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:54:12,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:54:12,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:54:12,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:54:12,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:54:12,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:54:12,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:54:12,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:54:12,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:54:12,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:54:12,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:54:12,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:54:12,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:54:12,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:54:12,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:54:12,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:54:12,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:54:12,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:54:12,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:54:12,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:54:12,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:54:12,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:54:12,487 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:54:12,487 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:54:12,487 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:54:12,487 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:54:12,488 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:54:12,488 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:54:12,488 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:54:12,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:54:12,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:54:12,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:54:12,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:54:12,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:54:12,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:54:12,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:54:12,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:54:12,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:54:12,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:54:12,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:54:12,491 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:54:12,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:54:12,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:54:12,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:54:12,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:54:12,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:54:12,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:54:12,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:54:12,494 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:54:12,494 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_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-10-28 23:54:12,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:54:12,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:54:12,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:54:12,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:54:12,796 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:54:12,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-invgen/nested9.i [2021-10-28 23:54:12,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/data/1d508c30d/b421cb77f2ef492a9025a0e6d092bfd5/FLAGdbe4aa3c4 [2021-10-28 23:54:13,343 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:54:13,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/sv-benchmarks/c/loop-invgen/nested9.i [2021-10-28 23:54:13,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/data/1d508c30d/b421cb77f2ef492a9025a0e6d092bfd5/FLAGdbe4aa3c4 [2021-10-28 23:54:13,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/data/1d508c30d/b421cb77f2ef492a9025a0e6d092bfd5 [2021-10-28 23:54:13,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:54:13,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:54:13,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:54:13,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:54:13,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:54:13,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:13,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f613167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13, skipping insertion in model container [2021-10-28 23:54:13,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:13,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:54:13,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:54:13,908 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-10-28 23:54:13,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:54:13,936 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:54:13,947 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-10-28 23:54:13,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:54:13,965 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:54:13,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13 WrapperNode [2021-10-28 23:54:13,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:54:13,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:54:13,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:54:13,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:54:13,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:13,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:54:14,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:54:14,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:54:14,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:54:14,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:54:14,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:54:14,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:54:14,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:54:14,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:14,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:14,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:14,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:14,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:54:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:54:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:54:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:54:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:54:14,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:54:14,384 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:54:14,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:14 BoogieIcfgContainer [2021-10-28 23:54:14,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:54:14,387 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:54:14,387 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:54:14,390 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:54:14,391 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:54:14,391 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:54:13" (1/3) ... [2021-10-28 23:54:14,393 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9f318b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:54:14, skipping insertion in model container [2021-10-28 23:54:14,393 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:54:14,393 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13" (2/3) ... [2021-10-28 23:54:14,394 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9f318b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:54:14, skipping insertion in model container [2021-10-28 23:54:14,394 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:54:14,394 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:14" (3/3) ... [2021-10-28 23:54:14,395 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-10-28 23:54:14,462 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:54:14,473 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:54:14,473 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:54:14,473 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:54:14,474 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:54:14,474 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:54:14,474 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:54:14,474 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:54:14,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:14,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:54:14,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:14,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:14,514 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:14,514 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:54:14,514 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:54:14,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:14,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:54:14,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:14,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:14,519 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:14,519 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:54:14,526 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L30true assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 7#L33true assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 6#L33-1true main_~i~0 := 0; 21#L34-3true [2021-10-28 23:54:14,526 INFO L793 eck$LassoCheckResult]: Loop: 21#L34-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 12#L35-3true assume !true; 11#L34-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 21#L34-3true [2021-10-28 23:54:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-10-28 23:54:14,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:14,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644956260] [2021-10-28 23:54:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:14,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:14,675 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:14,747 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash 62625, now seen corresponding path program 1 times [2021-10-28 23:54:14,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:14,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734206454] [2021-10-28 23:54:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:14,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:14,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:14,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734206454] [2021-10-28 23:54:14,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734206454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:14,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:14,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:54:14,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089370539] [2021-10-28 23:54:14,824 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:14,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:54:14,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:54:14,842 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:14,848 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-10-28 23:54:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:54:14,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2021-10-28 23:54:14,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:54:14,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2021-10-28 23:54:14,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 23:54:14,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 23:54:14,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-10-28 23:54:14,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:14,858 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:54:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-10-28 23:54:14,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 23:54:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 23:54:14,884 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:54:14,884 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:54:14,884 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:54:14,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-10-28 23:54:14,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 23:54:14,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:14,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:14,886 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:14,886 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:54:14,887 INFO L791 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 47#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 48#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 49#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 53#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 52#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 50#L33-1 main_~i~0 := 0; 51#L34-3 [2021-10-28 23:54:14,887 INFO L793 eck$LassoCheckResult]: Loop: 51#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 55#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 54#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 51#L34-3 [2021-10-28 23:54:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-10-28 23:54:14,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:14,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792746758] [2021-10-28 23:54:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:14,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:14,936 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:14,968 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash 61788, now seen corresponding path program 1 times [2021-10-28 23:54:14,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:14,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617342533] [2021-10-28 23:54:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:14,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:14,982 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:14,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 763900016, now seen corresponding path program 1 times [2021-10-28 23:54:14,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:14,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784975655] [2021-10-28 23:54:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:14,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:15,030 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:15,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:15,131 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:15,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:15,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:15,132 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:15,132 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:15,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,133 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:15,133 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:15,133 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-10-28 23:54:15,133 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:15,133 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:15,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:15,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:15,205 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:15,206 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:15,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:15,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:15,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:54:15,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:15,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:15,244 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:15,244 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:15,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:15,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:15,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:15,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:15,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:15,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:54:15,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:15,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:15,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:15,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:54:15,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:15,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:15,529 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:15,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:15,532 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:15,532 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:15,533 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:15,533 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:15,533 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:15,533 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,533 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:15,533 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:15,533 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-10-28 23:54:15,533 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:15,533 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:15,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:15,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:15,615 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:15,619 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:15,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:15,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:15,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:54:15,629 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:15,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:15,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:15,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:15,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:15,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:15,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:15,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:15,655 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:15,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-28 23:54:15,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:15,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:15,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:54:15,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:15,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:15,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:15,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:15,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:15,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:15,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:15,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:15,721 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:15,726 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:54:15,727 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:54:15,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:15,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:15,734 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:15,741 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:15,741 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:15,741 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:15,742 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-28 23:54:15,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:54:15,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:15,780 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:15,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:15,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:15,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:54:15,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:15,984 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 23:54:15,985 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:16,084 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 46 transitions. Complement of second has 8 states. [2021-10-28 23:54:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-10-28 23:54:16,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 23:54:16,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:16,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2021-10-28 23:54:16,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:16,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2021-10-28 23:54:16,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:16,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-10-28 23:54:16,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:54:16,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 44 transitions. [2021-10-28 23:54:16,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 23:54:16,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-28 23:54:16,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 44 transitions. [2021-10-28 23:54:16,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:16,110 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-10-28 23:54:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 44 transitions. [2021-10-28 23:54:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2021-10-28 23:54:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-10-28 23:54:16,118 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-28 23:54:16,119 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-28 23:54:16,122 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:54:16,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2021-10-28 23:54:16,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:54:16,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:16,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:16,128 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:16,128 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:54:16,128 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 155#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 156#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 157#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 161#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 160#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 158#L33-1 main_~i~0 := 0; 159#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-10-28 23:54:16,128 INFO L793 eck$LassoCheckResult]: Loop: 166#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 167#L36-2 assume !(main_~k~0 < main_~j~0); 171#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 176#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 162#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 163#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-10-28 23:54:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-10-28 23:54:16,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:16,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136906041] [2021-10-28 23:54:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:16,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:16,147 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:16,178 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:16,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 1 times [2021-10-28 23:54:16,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:16,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169625632] [2021-10-28 23:54:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:16,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:16,199 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:16,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash -696682915, now seen corresponding path program 1 times [2021-10-28 23:54:16,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:16,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933010501] [2021-10-28 23:54:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:16,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:16,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:16,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:16,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933010501] [2021-10-28 23:54:16,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933010501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:16,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:16,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:54:16,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494385723] [2021-10-28 23:54:16,358 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:16,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:16,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:16,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:16,358 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:16,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:16,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:16,359 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:16,359 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-10-28 23:54:16,359 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:16,359 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:16,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:16,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:16,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:16,431 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:16,431 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:16,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:16,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:16,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:16,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:16,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:16,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:54:16,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:16,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:16,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:16,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:16,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:54:16,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:16,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:16,785 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:16,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:16,790 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:16,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:16,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:16,790 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:16,790 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:16,790 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:16,790 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:16,790 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:16,790 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-10-28 23:54:16,790 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:16,791 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:16,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:16,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:16,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:16,891 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:16,891 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:16,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:16,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:16,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:16,906 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:16,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:16,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:16,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:16,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:16,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:16,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:16,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:16,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:54:16,932 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:16,948 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:54:16,948 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:54:16,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:16,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:16,974 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:16,974 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:16,974 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:16,975 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 23:54:16,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:54:17,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:17,012 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:17,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:17,109 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:54:17,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:17,238 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 23:54:17,238 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:17,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 118 states and 151 transitions. Complement of second has 13 states. [2021-10-28 23:54:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2021-10-28 23:54:17,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-28 23:54:17,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:17,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 14 letters. Loop has 6 letters. [2021-10-28 23:54:17,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:17,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 12 letters. [2021-10-28 23:54:17,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:17,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 151 transitions. [2021-10-28 23:54:17,463 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2021-10-28 23:54:17,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 99 states and 129 transitions. [2021-10-28 23:54:17,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 23:54:17,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 23:54:17,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 129 transitions. [2021-10-28 23:54:17,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:17,467 INFO L681 BuchiCegarLoop]: Abstraction has 99 states and 129 transitions. [2021-10-28 23:54:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 129 transitions. [2021-10-28 23:54:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2021-10-28 23:54:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 71 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2021-10-28 23:54:17,487 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2021-10-28 23:54:17,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:54:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:54:17,488 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:17,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:17,516 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-10-28 23:54:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:54:17,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2021-10-28 23:54:17,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:54:17,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 34 transitions. [2021-10-28 23:54:17,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 23:54:17,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-28 23:54:17,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 34 transitions. [2021-10-28 23:54:17,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:17,519 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-28 23:54:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 34 transitions. [2021-10-28 23:54:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-28 23:54:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-28 23:54:17,522 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-28 23:54:17,522 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-28 23:54:17,523 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:54:17,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2021-10-28 23:54:17,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:54:17,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:17,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:17,524 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:17,524 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:54:17,525 INFO L791 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 482#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 483#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 484#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 488#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 487#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 485#L33-1 main_~i~0 := 0; 486#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 495#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 496#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 507#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-10-28 23:54:17,525 INFO L793 eck$LassoCheckResult]: Loop: 493#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 494#L36-2 assume !(main_~k~0 < main_~j~0); 498#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 504#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 489#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 490#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-10-28 23:54:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 2 times [2021-10-28 23:54:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:17,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333191465] [2021-10-28 23:54:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:17,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:17,538 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:17,556 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 2 times [2021-10-28 23:54:17,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:17,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80808060] [2021-10-28 23:54:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:17,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:17,570 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:17,580 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1743510022, now seen corresponding path program 2 times [2021-10-28 23:54:17,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:17,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998113608] [2021-10-28 23:54:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:17,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:54:17,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:17,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998113608] [2021-10-28 23:54:17,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998113608] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:17,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:17,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:54:17,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746475366] [2021-10-28 23:54:17,714 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:17,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:17,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:17,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:17,715 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:17,715 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:17,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:17,715 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:17,715 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-10-28 23:54:17,716 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:17,716 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:17,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:17,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:17,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:17,787 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:17,787 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:17,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:17,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:17,788 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:17,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:54:17,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:17,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:17,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:17,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:17,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:17,852 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:17,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:54:17,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:17,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:18,110 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:18,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:18,114 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:18,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:18,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:18,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:18,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:18,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:18,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:18,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:18,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-10-28 23:54:18,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:18,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:18,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:18,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:18,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:18,193 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:18,193 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:18,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:18,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:18,194 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:18,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:18,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:18,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:18,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:18,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:18,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:18,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:18,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:18,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:54:18,226 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:18,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:18,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:18,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:18,265 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:18,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:18,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:18,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:18,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:18,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:18,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:18,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:18,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:18,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:54:18,297 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:18,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:18,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:18,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:18,333 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:18,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:18,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:18,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:18,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:18,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:18,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:18,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:18,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:18,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:54:18,369 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:18,375 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:54:18,375 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:54:18,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:18,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:18,382 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:18,382 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:18,382 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:18,383 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-10-28 23:54:18,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:54:18,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:18,419 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:18,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:18,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:18,484 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:54:18,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:18,616 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-10-28 23:54:18,617 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:18,839 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 97 states and 129 transitions. Complement of second has 16 states. [2021-10-28 23:54:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 35 transitions. [2021-10-28 23:54:18,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 23:54:18,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:18,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 17 letters. Loop has 6 letters. [2021-10-28 23:54:18,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:18,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 12 letters. [2021-10-28 23:54:18,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:18,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-10-28 23:54:18,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:18,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 23:54:18,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 93 states and 125 transitions. [2021-10-28 23:54:18,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-10-28 23:54:18,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-10-28 23:54:18,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 125 transitions. [2021-10-28 23:54:18,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:18,858 INFO L681 BuchiCegarLoop]: Abstraction has 93 states and 125 transitions. [2021-10-28 23:54:18,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states and 125 transitions. [2021-10-28 23:54:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-28 23:54:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 62 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2021-10-28 23:54:18,863 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 86 transitions. [2021-10-28 23:54:18,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:54:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:54:18,864 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:18,892 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-10-28 23:54:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:54:18,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 63 transitions. [2021-10-28 23:54:18,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:54:18,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 29 states and 35 transitions. [2021-10-28 23:54:18,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 23:54:18,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 23:54:18,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2021-10-28 23:54:18,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:18,896 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-28 23:54:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2021-10-28 23:54:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-28 23:54:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-10-28 23:54:18,902 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-28 23:54:18,902 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-28 23:54:18,902 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:54:18,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-10-28 23:54:18,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:54:18,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:18,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:18,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:18,905 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:18,905 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 822#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 819#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 820#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 826#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 825#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 823#L33-1 main_~i~0 := 0; 824#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 833#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 834#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 847#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-10-28 23:54:18,905 INFO L793 eck$LassoCheckResult]: Loop: 831#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 832#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 835#L18 assume !(0 == __VERIFIER_assert_~cond); 838#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 840#L36-2 assume !(main_~k~0 < main_~j~0); 842#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 843#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 827#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 828#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-10-28 23:54:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 3 times [2021-10-28 23:54:18,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:18,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766303707] [2021-10-28 23:54:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:18,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:18,938 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:18,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:18,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1576881701, now seen corresponding path program 1 times [2021-10-28 23:54:18,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:18,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934375101] [2021-10-28 23:54:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:18,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:18,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:18,996 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:18,998 INFO L85 PathProgramCache]: Analyzing trace with hash -604215978, now seen corresponding path program 1 times [2021-10-28 23:54:18,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:18,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657000335] [2021-10-28 23:54:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:18,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:19,023 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:19,054 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:19,180 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:19,180 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:19,180 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:19,180 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:19,180 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:19,180 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,180 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:19,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:19,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-10-28 23:54:19,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:19,181 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:19,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,287 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:19,287 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:19,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:19,291 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:19,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:19,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:19,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:54:19,316 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:19,317 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:19,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:19,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:19,357 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:19,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:54:19,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:19,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:19,376 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:19,376 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:19,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:19,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:19,399 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:19,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:54:19,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:19,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:19,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:19,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:19,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:19,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:19,433 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:19,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:54:19,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:19,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:19,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:19,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:19,492 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:19,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:54:19,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:19,494 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:19,765 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:19,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-10-28 23:54:19,769 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:19,769 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:19,769 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:19,769 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:19,769 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:19,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,770 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:19,770 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:19,770 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-10-28 23:54:19,770 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:19,770 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:19,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:19,882 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:19,882 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:19,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:19,888 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:19,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:54:19,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:19,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:19,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:19,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:19,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:19,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:19,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:19,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:19,929 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:19,932 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:54:19,932 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:54:19,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:19,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:19,937 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:19,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:19,939 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:19,939 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:19,940 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2021-10-28 23:54:19,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:54:19,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:19,960 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:19,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:19,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:20,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:20,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:54:20,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:20,174 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-10-28 23:54:20,174 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:20,349 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 117 states and 146 transitions. Complement of second has 18 states. [2021-10-28 23:54:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2021-10-28 23:54:20,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 9 letters. [2021-10-28 23:54:20,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:20,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 20 letters. Loop has 9 letters. [2021-10-28 23:54:20,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:20,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 18 letters. [2021-10-28 23:54:20,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:20,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 146 transitions. [2021-10-28 23:54:20,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-10-28 23:54:20,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 115 states and 144 transitions. [2021-10-28 23:54:20,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-28 23:54:20,373 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-28 23:54:20,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2021-10-28 23:54:20,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:20,374 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2021-10-28 23:54:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2021-10-28 23:54:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2021-10-28 23:54:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 72 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2021-10-28 23:54:20,391 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-10-28 23:54:20,391 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-10-28 23:54:20,392 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:54:20,392 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 94 transitions. [2021-10-28 23:54:20,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 23:54:20,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:20,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:20,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:20,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:54:20,394 INFO L791 eck$LassoCheckResult]: Stem: 1075#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1076#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1077#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1078#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1082#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1081#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1079#L33-1 main_~i~0 := 0; 1080#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1115#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1127#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1129#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1103#L35-3 [2021-10-28 23:54:20,394 INFO L793 eck$LassoCheckResult]: Loop: 1103#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1091#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1092#L18 assume !(0 == __VERIFIER_assert_~cond); 1110#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1109#L36-2 assume !(main_~k~0 < main_~j~0); 1102#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1103#L35-3 [2021-10-28 23:54:20,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 4 times [2021-10-28 23:54:20,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:20,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718086493] [2021-10-28 23:54:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:20,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:20,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:20,412 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:20,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2078695422, now seen corresponding path program 1 times [2021-10-28 23:54:20,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:20,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518451575] [2021-10-28 23:54:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:20,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:20,437 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:20,442 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1741881747, now seen corresponding path program 2 times [2021-10-28 23:54:20,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:20,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760757288] [2021-10-28 23:54:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:20,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:20,453 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:20,465 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:20,540 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:20,540 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:20,540 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:20,540 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:20,540 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:20,540 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:20,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:20,541 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:20,541 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-10-28 23:54:20,541 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:20,541 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:20,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:20,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:20,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:20,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:20,615 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:20,615 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:20,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:20,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:20,616 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:20,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:20,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:20,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:54:20,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:20,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:20,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:20,677 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:20,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:20,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:20,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:54:21,085 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:21,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 23:54:21,089 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:21,089 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:21,089 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:21,089 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:21,089 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:21,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:21,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:21,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:21,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-10-28 23:54:21,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:21,089 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:21,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:21,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:21,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:21,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:21,160 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:21,160 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:21,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:21,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:21,177 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:21,179 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:21,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:21,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:21,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:21,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:21,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:21,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:54:21,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:21,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:21,209 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:21,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:21,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:21,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:21,245 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:21,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:21,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:21,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:21,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:21,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:21,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:21,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:21,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:21,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:54:21,281 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:21,285 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:54:21,285 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:54:21,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:21,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:21,287 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:21,288 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:21,288 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:21,289 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:21,289 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 5*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 23:54:21,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:54:21,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:21,311 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:21,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:21,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:21,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:54:21,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:21,479 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 23:54:21,479 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:21,497 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 98 transitions. Complement of second has 5 states. [2021-10-28 23:54:21,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:21,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 23:54:21,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 23:54:21,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:21,499 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:21,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:21,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:21,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:54:21,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:21,649 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 23:54:21,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:21,662 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 98 transitions. Complement of second has 5 states. [2021-10-28 23:54:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 23:54:21,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 23:54:21,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:21,663 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:21,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:21,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:21,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:21,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:54:21,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:21,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:21,837 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 23:54:21,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:21,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 156 states and 196 transitions. Complement of second has 10 states. [2021-10-28 23:54:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-10-28 23:54:21,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 23:54:21,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:21,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 17 letters. Loop has 6 letters. [2021-10-28 23:54:21,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:21,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 12 letters. [2021-10-28 23:54:21,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:21,894 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2021-10-28 23:54:21,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-28 23:54:21,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 142 states and 180 transitions. [2021-10-28 23:54:21,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-28 23:54:21,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:54:21,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 180 transitions. [2021-10-28 23:54:21,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:21,898 INFO L681 BuchiCegarLoop]: Abstraction has 142 states and 180 transitions. [2021-10-28 23:54:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 180 transitions. [2021-10-28 23:54:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2021-10-28 23:54:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2021-10-28 23:54:21,906 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-10-28 23:54:21,906 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-10-28 23:54:21,906 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:54:21,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2021-10-28 23:54:21,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-28 23:54:21,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:21,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:21,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:21,908 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:21,908 INFO L791 eck$LassoCheckResult]: Stem: 1659#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1660#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1661#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1662#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1666#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1665#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1663#L33-1 main_~i~0 := 0; 1664#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1689#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1713#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1714#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-10-28 23:54:21,908 INFO L793 eck$LassoCheckResult]: Loop: 1695#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1692#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1696#L18 assume !(0 == __VERIFIER_assert_~cond); 1682#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1676#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1677#L18 assume !(0 == __VERIFIER_assert_~cond); 1679#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1693#L36-2 assume !(main_~k~0 < main_~j~0); 1685#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1686#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1667#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1668#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-10-28 23:54:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 5 times [2021-10-28 23:54:21,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:21,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679898501] [2021-10-28 23:54:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:21,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:21,917 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:21,925 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -206190261, now seen corresponding path program 2 times [2021-10-28 23:54:21,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:21,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347038718] [2021-10-28 23:54:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:21,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:22,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:22,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347038718] [2021-10-28 23:54:22,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347038718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:22,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629986732] [2021-10-28 23:54:22,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:54:22,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:22,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:22,005 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:22,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 23:54:22,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:54:22,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:22,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:54:22,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:22,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629986732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:22,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:22,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-28 23:54:22,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932226518] [2021-10-28 23:54:22,291 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:54:22,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:54:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:54:22,299 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 38 Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:22,556 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2021-10-28 23:54:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:54:22,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 328 transitions. [2021-10-28 23:54:22,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2021-10-28 23:54:22,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 328 transitions. [2021-10-28 23:54:22,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 23:54:22,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 23:54:22,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 328 transitions. [2021-10-28 23:54:22,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:22,562 INFO L681 BuchiCegarLoop]: Abstraction has 270 states and 328 transitions. [2021-10-28 23:54:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 328 transitions. [2021-10-28 23:54:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2021-10-28 23:54:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 166 states have (on average 1.2530120481927711) internal successors, (208), 165 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-10-28 23:54:22,571 INFO L704 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-10-28 23:54:22,572 INFO L587 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-10-28 23:54:22,572 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:54:22,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 166 states and 208 transitions. [2021-10-28 23:54:22,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 23:54:22,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:22,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:22,574 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:22,574 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:22,574 INFO L791 eck$LassoCheckResult]: Stem: 2103#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 2104#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 2105#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2106#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2110#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2109#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2107#L33-1 main_~i~0 := 0; 2108#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2135#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2146#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2147#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-10-28 23:54:22,574 INFO L793 eck$LassoCheckResult]: Loop: 2145#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 2120#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2121#L18 assume !(0 == __VERIFIER_assert_~cond); 2127#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2128#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2143#L18 assume !(0 == __VERIFIER_assert_~cond); 2142#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2141#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2123#L18 assume !(0 == __VERIFIER_assert_~cond); 2124#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2140#L36-2 assume !(main_~k~0 < main_~j~0); 2139#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 2138#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2111#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2112#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-10-28 23:54:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 6 times [2021-10-28 23:54:22,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:22,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119226486] [2021-10-28 23:54:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:22,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:22,583 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:22,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 452506725, now seen corresponding path program 3 times [2021-10-28 23:54:22,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:22,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077611845] [2021-10-28 23:54:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:22,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:22,599 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:22,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1390681386, now seen corresponding path program 3 times [2021-10-28 23:54:22,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:22,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961533415] [2021-10-28 23:54:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:22,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:54:22,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:22,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961533415] [2021-10-28 23:54:22,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961533415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:22,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996340036] [2021-10-28 23:54:22,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:54:22,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:22,685 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:22,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 23:54:22,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-28 23:54:22,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:22,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:54:22,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:22,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996340036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:22,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-10-28 23:54:22,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885674671] [2021-10-28 23:54:23,172 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:23,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:23,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:23,172 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:23,172 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:23,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:23,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:23,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:23,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-10-28 23:54:23,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:23,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:23,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,259 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:23,259 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:23,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:23,266 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:23,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:23,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:23,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:54:23,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:23,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:23,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:23,325 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:23,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:23,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:23,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:54:23,654 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:23,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:23,657 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:23,658 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:23,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:23,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:23,658 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:23,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:23,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:23,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:23,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-10-28 23:54:23,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:23,658 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:23,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:23,752 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:23,752 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:23,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:23,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:23,753 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:23,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 23:54:23,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:23,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:23,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:23,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:23,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:23,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:23,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:23,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:23,769 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:23,772 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:54:23,772 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:54:23,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:23,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:23,774 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:23,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 23:54:23,774 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:23,775 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:23,775 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:23,775 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2021-10-28 23:54:23,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:23,794 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:23,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:23,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:23,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:54:23,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:23,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:24,136 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-10-28 23:54:24,136 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46 Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:24,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 672 states and 840 transitions. Complement of second has 32 states. [2021-10-28 23:54:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 1 stem states 15 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 62 transitions. [2021-10-28 23:54:24,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 15 letters. [2021-10-28 23:54:24,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:24,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 26 letters. Loop has 15 letters. [2021-10-28 23:54:24,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:24,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 30 letters. [2021-10-28 23:54:24,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:24,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 672 states and 840 transitions. [2021-10-28 23:54:24,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-10-28 23:54:24,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 672 states to 504 states and 629 transitions. [2021-10-28 23:54:24,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-10-28 23:54:24,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-10-28 23:54:24,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 504 states and 629 transitions. [2021-10-28 23:54:24,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:24,494 INFO L681 BuchiCegarLoop]: Abstraction has 504 states and 629 transitions. [2021-10-28 23:54:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states and 629 transitions. [2021-10-28 23:54:24,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 262. [2021-10-28 23:54:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 262 states have (on average 1.2709923664122138) internal successors, (333), 261 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2021-10-28 23:54:24,505 INFO L704 BuchiCegarLoop]: Abstraction has 262 states and 333 transitions. [2021-10-28 23:54:24,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:24,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:54:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:54:24,506 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:24,634 INFO L93 Difference]: Finished difference Result 341 states and 428 transitions. [2021-10-28 23:54:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:54:24,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 428 transitions. [2021-10-28 23:54:24,638 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-28 23:54:24,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 283 states and 358 transitions. [2021-10-28 23:54:24,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-28 23:54:24,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-10-28 23:54:24,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 283 states and 358 transitions. [2021-10-28 23:54:24,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:24,641 INFO L681 BuchiCegarLoop]: Abstraction has 283 states and 358 transitions. [2021-10-28 23:54:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states and 358 transitions. [2021-10-28 23:54:24,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2021-10-28 23:54:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 278 states have (on average 1.2625899280575539) internal successors, (351), 277 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 351 transitions. [2021-10-28 23:54:24,649 INFO L704 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-10-28 23:54:24,649 INFO L587 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-10-28 23:54:24,649 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:54:24,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 278 states and 351 transitions. [2021-10-28 23:54:24,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-28 23:54:24,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:24,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:24,652 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:24,653 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1] [2021-10-28 23:54:24,653 INFO L791 eck$LassoCheckResult]: Stem: 3795#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 3796#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 3797#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 3798#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 3802#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 3801#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 3799#L33-1 main_~i~0 := 0; 3800#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3823#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3872#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3865#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3866#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3882#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3980#L18 assume !(0 == __VERIFIER_assert_~cond); 3979#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3875#L36-2 assume !(main_~k~0 < main_~j~0); 3876#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3881#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3863#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3864#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3835#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-10-28 23:54:24,653 INFO L793 eck$LassoCheckResult]: Loop: 3812#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3813#L18 assume !(0 == __VERIFIER_assert_~cond); 3815#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3817#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3834#L18 assume !(0 == __VERIFIER_assert_~cond); 3832#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3826#L36-2 assume !(main_~k~0 < main_~j~0); 3819#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3820#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-10-28 23:54:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 4 times [2021-10-28 23:54:24,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:24,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022823758] [2021-10-28 23:54:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:24,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:24,664 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:24,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1734754794, now seen corresponding path program 2 times [2021-10-28 23:54:24,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:24,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323773006] [2021-10-28 23:54:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:24,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:24,686 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:24,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 538979237, now seen corresponding path program 5 times [2021-10-28 23:54:24,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:24,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653640300] [2021-10-28 23:54:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:24,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:24,706 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:24,720 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:24,830 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:24,830 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:24,830 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:24,830 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:24,830 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:24,830 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:24,830 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:24,830 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:24,830 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-10-28 23:54:24,831 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:24,831 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:24,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:24,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:24,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:24,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:24,902 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:24,902 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:24,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:24,904 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:24,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 23:54:24,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:24,906 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:24,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:24,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:24,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:24,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:24,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:24,950 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:24,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 23:54:24,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:24,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:24,964 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:24,964 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:24,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:24,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:24,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:24,990 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:24,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 23:54:24,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:24,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:25,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:25,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:25,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:25,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:25,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:25,026 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:25,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 23:54:25,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:25,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:25,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:25,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:25,102 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:25,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 23:54:25,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:25,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:25,485 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:25,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-10-28 23:54:25,489 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:25,489 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:25,489 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:25,489 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:25,489 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:25,489 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:25,489 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:25,489 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:25,489 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-10-28 23:54:25,489 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:25,489 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:25,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:25,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:25,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:25,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:25,553 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:25,553 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:25,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:25,566 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:25,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 23:54:25,568 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:25,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:25,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:25,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:25,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:25,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:25,576 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:25,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:25,581 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:25,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:25,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:25,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:25,604 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:25,611 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:25,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 23:54:25,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:25,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:25,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:25,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:25,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:25,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:25,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:25,620 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:25,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:25,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:25,642 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:25,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 23:54:25,643 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:25,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:25,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:25,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:25,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:25,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:25,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:25,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:25,654 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:25,657 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:54:25,657 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:54:25,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:25,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:25,658 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:25,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 23:54:25,659 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:25,659 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:25,660 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:25,660 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 3*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:54:25,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:25,683 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:25,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:25,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:25,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:25,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 23:54:25,825 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:54:25,825 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:25,875 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 292 states and 365 transitions. Complement of second has 7 states. [2021-10-28 23:54:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 23:54:25,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-28 23:54:25,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:25,876 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:25,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:25,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:25,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:25,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 23:54:26,023 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:54:26,023 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:26,044 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 292 states and 365 transitions. Complement of second has 7 states. [2021-10-28 23:54:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 23:54:26,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-28 23:54:26,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:26,046 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:26,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:26,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:26,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:26,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:26,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 23:54:26,206 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:54:26,206 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:26,230 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 503 states and 601 transitions. Complement of second has 6 states. [2021-10-28 23:54:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-10-28 23:54:26,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-28 23:54:26,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:26,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 30 letters. Loop has 9 letters. [2021-10-28 23:54:26,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:26,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 18 letters. [2021-10-28 23:54:26,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:26,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 503 states and 601 transitions. [2021-10-28 23:54:26,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-10-28 23:54:26,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 503 states to 383 states and 465 transitions. [2021-10-28 23:54:26,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 23:54:26,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 23:54:26,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 383 states and 465 transitions. [2021-10-28 23:54:26,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:26,242 INFO L681 BuchiCegarLoop]: Abstraction has 383 states and 465 transitions. [2021-10-28 23:54:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states and 465 transitions. [2021-10-28 23:54:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 324. [2021-10-28 23:54:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 324 states have (on average 1.212962962962963) internal successors, (393), 323 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2021-10-28 23:54:26,250 INFO L704 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-10-28 23:54:26,251 INFO L587 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-10-28 23:54:26,251 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:54:26,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 324 states and 393 transitions. [2021-10-28 23:54:26,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 23:54:26,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:26,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:26,254 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:26,254 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:26,254 INFO L791 eck$LassoCheckResult]: Stem: 5471#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 5472#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5473#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5474#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 5478#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 5477#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 5475#L33-1 main_~i~0 := 0; 5476#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5501#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5557#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5549#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5550#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5565#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5563#L18 assume !(0 == __VERIFIER_assert_~cond); 5560#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5556#L36-2 assume !(main_~k~0 < main_~j~0); 5553#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5548#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5544#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5545#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5513#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-10-28 23:54:26,254 INFO L793 eck$LassoCheckResult]: Loop: 5488#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5490#L18 assume !(0 == __VERIFIER_assert_~cond); 5493#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5495#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5512#L18 assume !(0 == __VERIFIER_assert_~cond); 5511#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5510#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5509#L18 assume !(0 == __VERIFIER_assert_~cond); 5508#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5507#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5505#L18 assume !(0 == __VERIFIER_assert_~cond); 5506#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5504#L36-2 assume !(main_~k~0 < main_~j~0); 5497#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5498#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5479#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5480#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5515#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-10-28 23:54:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 6 times [2021-10-28 23:54:26,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:26,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811653862] [2021-10-28 23:54:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:26,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:26,265 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:26,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1362433097, now seen corresponding path program 4 times [2021-10-28 23:54:26,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:26,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162802534] [2021-10-28 23:54:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:26,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:26,287 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:26,295 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:26,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash -130724088, now seen corresponding path program 7 times [2021-10-28 23:54:26,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:26,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103357947] [2021-10-28 23:54:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:26,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:26,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-28 23:54:26,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:26,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103357947] [2021-10-28 23:54:26,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103357947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:26,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353249374] [2021-10-28 23:54:26,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:54:26,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:26,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:26,415 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:26,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 23:54:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:26,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:54:26,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:54:26,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353249374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:26,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:26,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-10-28 23:54:26,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011730621] [2021-10-28 23:54:26,996 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:26,996 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:26,996 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:26,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:26,996 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:26,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:26,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:26,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:26,997 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-10-28 23:54:27,001 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:27,001 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:27,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,086 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:27,086 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:27,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,087 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 23:54:27,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:27,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:27,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:27,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:27,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:27,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,119 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 23:54:27,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:27,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:27,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:27,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:27,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 23:54:27,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,149 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 23:54:27,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:27,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:27,165 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:27,166 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:27,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:27,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,186 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:27,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:27,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 23:54:27,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:27,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:27,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-28 23:54:27,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,241 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:27,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:27,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 23:54:27,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-10-28 23:54:27,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,285 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:27,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:27,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 23:54:27,762 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:27,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-28 23:54:27,766 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:27,766 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:27,766 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:27,767 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:27,767 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:27,767 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,767 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:27,767 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:27,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-10-28 23:54:27,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:27,775 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:27,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:27,852 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:27,853 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:27,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,853 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:27,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 23:54:27,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:27,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:27,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:27,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:27,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:27,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:27,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:27,876 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:27,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-10-28 23:54:27,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,898 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 23:54:27,899 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:27,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:27,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:27,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:27,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:27,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:27,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:27,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:27,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:27,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-10-28 23:54:27,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,928 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 23:54:27,929 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:27,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:27,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:27,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:27,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:27,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:27,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:27,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:27,939 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:27,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:27,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,959 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 23:54:27,960 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:27,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:27,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:27,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:27,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:27,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:27,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:27,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:27,969 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:27,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-28 23:54:27,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:27,989 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:27,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 23:54:27,990 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:27,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:27,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:27,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:27,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:27,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:27,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:27,999 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:28,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:28,006 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:54:28,006 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:54:28,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:28,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:28,008 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:28,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 23:54:28,013 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:28,013 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:28,013 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:28,013 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:54:28,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:28,033 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:28,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:28,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:28,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:28,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 23:54:28,254 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 23:54:28,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:28,277 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 763 states and 938 transitions. Complement of second has 6 states. [2021-10-28 23:54:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2021-10-28 23:54:28,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 18 letters. [2021-10-28 23:54:28,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:28,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 39 letters. Loop has 18 letters. [2021-10-28 23:54:28,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:28,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 36 letters. [2021-10-28 23:54:28,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:28,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 763 states and 938 transitions. [2021-10-28 23:54:28,286 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 23:54:28,290 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 763 states to 496 states and 614 transitions. [2021-10-28 23:54:28,290 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-28 23:54:28,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-10-28 23:54:28,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 614 transitions. [2021-10-28 23:54:28,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:28,291 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 614 transitions. [2021-10-28 23:54:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 614 transitions. [2021-10-28 23:54:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 477. [2021-10-28 23:54:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 477 states have (on average 1.2243186582809225) internal successors, (584), 476 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2021-10-28 23:54:28,303 INFO L704 BuchiCegarLoop]: Abstraction has 477 states and 584 transitions. [2021-10-28 23:54:28,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:54:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:54:28,304 INFO L87 Difference]: Start difference. First operand 477 states and 584 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:28,660 INFO L93 Difference]: Finished difference Result 1182 states and 1388 transitions. [2021-10-28 23:54:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:54:28,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1182 states and 1388 transitions. [2021-10-28 23:54:28,671 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-10-28 23:54:28,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1182 states to 602 states and 721 transitions. [2021-10-28 23:54:28,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-28 23:54:28,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 23:54:28,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 602 states and 721 transitions. [2021-10-28 23:54:28,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:54:28,677 INFO L681 BuchiCegarLoop]: Abstraction has 602 states and 721 transitions. [2021-10-28 23:54:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states and 721 transitions. [2021-10-28 23:54:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 290. [2021-10-28 23:54:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.2) internal successors, (348), 289 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 348 transitions. [2021-10-28 23:54:28,688 INFO L704 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-10-28 23:54:28,688 INFO L587 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-10-28 23:54:28,688 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 23:54:28,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 348 transitions. [2021-10-28 23:54:28,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 23:54:28,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:54:28,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:54:28,691 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:28,691 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:54:28,691 INFO L791 eck$LassoCheckResult]: Stem: 8512#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 8513#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 8514#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8515#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 8519#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 8518#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 8516#L33-1 main_~i~0 := 0; 8517#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8541#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8520#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8521#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8524#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8525#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8606#L18 assume !(0 == __VERIFIER_assert_~cond); 8605#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8604#L36-2 assume !(main_~k~0 < main_~j~0); 8603#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8602#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8601#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8572#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8574#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8599#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8658#L18 assume !(0 == __VERIFIER_assert_~cond); 8657#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8621#L36-2 assume !(main_~k~0 < main_~j~0); 8619#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8616#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8547#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-10-28 23:54:28,692 INFO L793 eck$LassoCheckResult]: Loop: 8532#L18 assume !(0 == __VERIFIER_assert_~cond); 8533#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8535#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-10-28 23:54:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1984863707, now seen corresponding path program 8 times [2021-10-28 23:54:28,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:28,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146739046] [2021-10-28 23:54:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:28,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:54:28,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:28,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146739046] [2021-10-28 23:54:28,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146739046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:28,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696176697] [2021-10-28 23:54:28,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:54:28,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:54:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:28,780 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:54:28,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-28 23:54:28,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:28,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:54:28,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:54:28,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:54:28,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:54:29,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696176697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:54:29,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:54:29,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-28 23:54:29,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891349879] [2021-10-28 23:54:29,113 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:54:29,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash 84523, now seen corresponding path program 1 times [2021-10-28 23:54:29,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:29,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979037295] [2021-10-28 23:54:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:29,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:29,120 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:29,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:29,174 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:29,174 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:29,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:29,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:29,174 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:54:29,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:29,175 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:29,175 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:29,175 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-10-28 23:54:29,175 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:29,175 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:29,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:29,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:29,391 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:29,391 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:54:29,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:29,397 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:29,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:29,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:29,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 23:54:29,425 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:54:29,425 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:54:29,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:29,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:29,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:29,458 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:29,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:54:29,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:29,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 23:54:29,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:29,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:29,515 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:29,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:54:29,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:54:29,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 23:54:30,534 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:54:30,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:30,538 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:54:30,538 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:54:30,538 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:54:30,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:54:30,538 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:54:30,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:30,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:54:30,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:54:30,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-10-28 23:54:30,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:54:30,538 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:54:30,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:30,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:54:30,742 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:54:30,742 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:54:30,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:30,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:30,743 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:30,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 23:54:30,744 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:30,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:30,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:30,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:30,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:54:30,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:30,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:54:30,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:30,755 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:54:30,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:30,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:30,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:30,776 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:30,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 23:54:30,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:54:30,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:54:30,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:54:30,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:54:30,786 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-10-28 23:54:30,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:54:30,790 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-10-28 23:54:30,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:54:30,797 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:54:30,803 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 23:54:30,803 INFO L444 ModelExtractionUtils]: 4 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:54:30,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:54:30,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:30,804 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:30,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 23:54:30,805 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:54:30,805 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:54:30,805 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:54:30,805 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 23:54:30,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:30,826 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:54:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:30,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:30,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:30,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:30,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:30,949 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:54:30,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:30,973 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 374 transitions. Complement of second has 7 states. [2021-10-28 23:54:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 23:54:30,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-28 23:54:30,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:30,976 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:31,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:31,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:31,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:31,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:31,105 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:54:31,106 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:31,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 374 transitions. Complement of second has 7 states. [2021-10-28 23:54:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 23:54:31,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-28 23:54:31,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:31,127 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:54:31,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:31,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:54:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:31,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:54:31,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:54:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:31,248 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:54:31,248 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:31,272 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 473 states and 544 transitions. Complement of second has 6 states. [2021-10-28 23:54:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:54:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2021-10-28 23:54:31,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-28 23:54:31,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:31,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 3 letters. [2021-10-28 23:54:31,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:31,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 6 letters. [2021-10-28 23:54:31,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:54:31,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 473 states and 544 transitions. [2021-10-28 23:54:31,283 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:54:31,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 473 states to 0 states and 0 transitions. [2021-10-28 23:54:31,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:54:31,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:54:31,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:54:31,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:31,284 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:31,284 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:31,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:54:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:54:31,285 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:54:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:31,285 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 23:54:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:54:31,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 23:54:31,286 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:54:31,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:54:31,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:54:31,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:54:31,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:54:31,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:54:31,287 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:31,287 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:31,287 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:31,287 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 23:54:31,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:54:31,287 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:54:31,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:54:31,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:54:31 BoogieIcfgContainer [2021-10-28 23:54:31,294 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:54:31,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:54:31,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:54:31,295 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:54:31,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:14" (3/4) ... [2021-10-28 23:54:31,298 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:54:31,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:54:31,302 INFO L168 Benchmark]: Toolchain (without parser) took 17590.44 ms. Allocated memory was 100.7 MB in the beginning and 151.0 MB in the end (delta: 50.3 MB). Free memory was 66.5 MB in the beginning and 59.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:31,303 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:31,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.72 ms. Allocated memory is still 100.7 MB. Free memory was 66.3 MB in the beginning and 76.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:31,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.59 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:31,304 INFO L168 Benchmark]: Boogie Preprocessor took 20.94 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 74.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:31,304 INFO L168 Benchmark]: RCFGBuilder took 362.96 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 64.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:31,305 INFO L168 Benchmark]: BuchiAutomizer took 16906.81 ms. Allocated memory was 100.7 MB in the beginning and 151.0 MB in the end (delta: 50.3 MB). Free memory was 64.4 MB in the beginning and 59.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:31,305 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 151.0 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:31,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.72 ms. Allocated memory is still 100.7 MB. Free memory was 66.3 MB in the beginning and 76.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.59 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.94 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 74.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 362.96 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 64.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 16906.81 ms. Allocated memory was 100.7 MB in the beginning and 151.0 MB in the end (delta: 50.3 MB). Free memory was 64.4 MB in the beginning and 59.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.59 ms. Allocated memory is still 151.0 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (7 trivial, 6 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function n + -1 * j and consists of 7 locations. One deterministic module has affine ranking function n + -2 * i and consists of 9 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 10 locations. One deterministic module has affine ranking function -2 * i + 5 and consists of 17 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function 5 * i + -2 * j and consists of 6 locations. One nondeterministic module has affine ranking function 3 * i + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.8s and 12 iterations. TraceHistogramMax:4. Analysis of lassos took 11.5s. Construction of modules took 0.7s. Büchi inclusion checks took 4.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 882 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 324 states and ocurred in iteration 9. Nontrivial modules had stage [6, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 31/46 HoareTripleCheckerStatistics: 272 SDtfs, 446 SDslu, 248 SDs, 0 SdLazy, 925 SolverSat, 182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf100 lsp98 ukn95 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp98 dnf145 smp94 tf104 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 30ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:54:31,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 23:54:31,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-28 23:54:31,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-28 23:54:31,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-28 23:54:32,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-28 23:54:32,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6711876c-9f97-4b3b-ab5e-232d2f885292/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...