./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:15:49,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:15:49,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:15:49,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:15:49,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:15:49,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:15:49,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:15:49,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:15:49,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:15:49,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:15:49,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:15:49,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:15:49,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:15:49,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:15:49,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:15:49,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:15:49,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:15:49,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:15:49,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:15:49,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:15:49,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:15:49,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:15:49,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:15:49,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:15:49,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:15:49,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:15:49,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:15:49,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:15:49,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:15:49,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:15:49,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:15:49,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:15:49,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:15:49,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:15:49,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:15:49,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:15:49,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:15:49,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:15:49,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:15:49,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:15:49,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:15:49,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-19 04:15:49,539 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:15:49,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:15:49,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:15:49,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:15:49,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:15:49,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:15:49,541 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:15:49,542 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-19 04:15:49,542 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-19 04:15:49,542 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-19 04:15:49,542 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-19 04:15:49,542 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-19 04:15:49,543 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-19 04:15:49,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:15:49,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:15:49,543 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:15:49,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:15:49,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:15:49,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:15:49,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-19 04:15:49,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-19 04:15:49,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-19 04:15:49,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:15:49,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:15:49,545 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-19 04:15:49,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:15:49,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-19 04:15:49,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:15:49,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:15:49,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:15:49,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:15:49,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:15:49,547 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-19 04:15:49,548 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_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-11-19 04:15:49,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:15:49,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:15:49,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:15:49,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:15:49,815 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:15:49,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/loop-invgen/nested9.i [2021-11-19 04:15:49,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/data/797cdbc5d/6420a0cb8f454838bdf403e33b9044ed/FLAG9b8d3f59b [2021-11-19 04:15:50,351 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:15:50,352 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/sv-benchmarks/c/loop-invgen/nested9.i [2021-11-19 04:15:50,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/data/797cdbc5d/6420a0cb8f454838bdf403e33b9044ed/FLAG9b8d3f59b [2021-11-19 04:15:50,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/data/797cdbc5d/6420a0cb8f454838bdf403e33b9044ed [2021-11-19 04:15:50,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:15:50,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:15:50,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:15:50,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:15:50,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:15:50,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:50" (1/1) ... [2021-11-19 04:15:50,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8d33e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:50, skipping insertion in model container [2021-11-19 04:15:50,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:50" (1/1) ... [2021-11-19 04:15:50,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:15:50,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:15:50,936 WARN L230 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_778705e7-5b26-475f-999f-c5754836715a/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-11-19 04:15:50,954 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:15:50,965 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:15:50,985 WARN L230 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_778705e7-5b26-475f-999f-c5754836715a/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-11-19 04:15:50,998 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:15:51,020 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:15:51,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51 WrapperNode [2021-11-19 04:15:51,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:15:51,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:15:51,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:15:51,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:15:51,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,062 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2021-11-19 04:15:51,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:15:51,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:15:51,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:15:51,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:15:51,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:15:51,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:15:51,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:15:51,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:15:51,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (1/1) ... [2021-11-19 04:15:51,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:51,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:51,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:51,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-19 04:15:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:15:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:15:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:15:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:15:51,274 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:15:51,276 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:15:51,418 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:15:51,426 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:15:51,426 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 04:15:51,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:51 BoogieIcfgContainer [2021-11-19 04:15:51,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:15:51,430 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-19 04:15:51,430 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-19 04:15:51,434 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-19 04:15:51,435 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-19 04:15:51,435 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 04:15:50" (1/3) ... [2021-11-19 04:15:51,437 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@703ae8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 04:15:51, skipping insertion in model container [2021-11-19 04:15:51,437 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-19 04:15:51,437 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:51" (2/3) ... [2021-11-19 04:15:51,438 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@703ae8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 04:15:51, skipping insertion in model container [2021-11-19 04:15:51,438 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-19 04:15:51,438 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:51" (3/3) ... [2021-11-19 04:15:51,440 INFO L388 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-11-19 04:15:51,495 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-19 04:15:51,496 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-19 04:15:51,496 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-19 04:15:51,496 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-19 04:15:51,496 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-19 04:15:51,496 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-19 04:15:51,496 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-19 04:15:51,497 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-19 04:15:51,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:15:51,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-19 04:15:51,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:15:51,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:15:51,575 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:51,575 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-19 04:15:51,575 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-19 04:15:51,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:15:51,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-19 04:15:51,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:15:51,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:15:51,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:51,580 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-19 04:15:51,587 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 5#L30true assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 7#L33true assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 6#L33-1true main_~i~0#1 := 0; 22#L34-3true [2021-11-19 04:15:51,587 INFO L793 eck$LassoCheckResult]: Loop: 22#L34-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 13#L35-3true assume !true; 12#L34-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 22#L34-3true [2021-11-19 04:15:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:51,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-11-19 04:15:51,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:51,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131873143] [2021-11-19 04:15:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:51,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:51,722 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:51,761 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 62657, now seen corresponding path program 1 times [2021-11-19 04:15:51,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:51,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975558684] [2021-11-19 04:15:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:51,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:51,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:15:51,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975558684] [2021-11-19 04:15:51,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975558684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:15:51,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:15:51,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:15:51,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970928939] [2021-11-19 04:15:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:15:51,848 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-19 04:15:51,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:15:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:15:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:15:51,909 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-11-19 04:15:51,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:15:51,917 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-11-19 04:15:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:15:51,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2021-11-19 04:15:51,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-11-19 04:15:51,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2021-11-19 04:15:51,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-19 04:15:51,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-19 04:15:51,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2021-11-19 04:15:51,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:15:51,933 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-19 04:15:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2021-11-19 04:15:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 04:15:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 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) [2021-11-19 04:15:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-19 04:15:51,963 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-19 04:15:51,963 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-19 04:15:51,963 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-19 04:15:51,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-11-19 04:15:51,964 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-11-19 04:15:51,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:15:51,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:15:51,965 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:51,965 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-19 04:15:51,966 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 49#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 50#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 51#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 55#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 54#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 52#L33-1 main_~i~0#1 := 0; 53#L34-3 [2021-11-19 04:15:51,966 INFO L793 eck$LassoCheckResult]: Loop: 53#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 60#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 59#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 53#L34-3 [2021-11-19 04:15:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-11-19 04:15:51,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:51,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417500890] [2021-11-19 04:15:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:51,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:51,985 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:52,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:52,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:52,011 INFO L85 PathProgramCache]: Analyzing trace with hash 61789, now seen corresponding path program 1 times [2021-11-19 04:15:52,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:52,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306801632] [2021-11-19 04:15:52,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:52,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:52,022 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:52,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:52,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash 763900017, now seen corresponding path program 1 times [2021-11-19 04:15:52,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:52,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528708692] [2021-11-19 04:15:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:52,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:52,048 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:52,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:52,152 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:52,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:52,153 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:52,153 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:52,153 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:15:52,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:52,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:52,154 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:52,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-11-19 04:15:52,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:52,155 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:52,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:52,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:52,308 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:52,309 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:15:52,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:52,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:52,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-19 04:15:52,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:52,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:52,333 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:15:52,334 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:15:52,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-19 04:15:52,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:52,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:52,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-19 04:15:52,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:52,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:52,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-11-19 04:15:52,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:52,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:52,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:52,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-19 04:15:52,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:15:52,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:52,728 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:15:52,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:52,732 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:52,732 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:52,732 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:52,732 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:52,732 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:15:52,732 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:52,733 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:52,733 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:52,733 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-11-19 04:15:52,733 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:52,733 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:52,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:52,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:52,796 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:52,801 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:15:52,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:52,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:52,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:52,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:52,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:52,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:52,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:52,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:52,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:52,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-19 04:15:52,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:52,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:52,856 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:15:52,862 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-19 04:15:52,863 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-19 04:15:52,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:52,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:52,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:52,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-19 04:15:52,878 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:15:52,879 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:15:52,879 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:15:52,880 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-11-19 04:15:52,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:52,929 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:15:52,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:52,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:15:52,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:53,048 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:15:53,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:53,131 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-19 04:15:53,132 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 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) [2021-11-19 04:15:53,224 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 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 40 states and 50 transitions. Complement of second has 8 states. [2021-11-19 04:15:53,225 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 [2021-11-19 04:15:53,226 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) [2021-11-19 04:15:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-11-19 04:15:53,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-19 04:15:53,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:53,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-19 04:15:53,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:53,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-19 04:15:53,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:53,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-11-19 04:15:53,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-11-19 04:15:53,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 48 transitions. [2021-11-19 04:15:53,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-11-19 04:15:53,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-19 04:15:53,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 48 transitions. [2021-11-19 04:15:53,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:15:53,236 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-11-19 04:15:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 48 transitions. [2021-11-19 04:15:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-11-19 04:15:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 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) [2021-11-19 04:15:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-19 04:15:53,241 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-19 04:15:53,241 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-19 04:15:53,241 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-19 04:15:53,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2021-11-19 04:15:53,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-19 04:15:53,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:15:53,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:15:53,244 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:53,244 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-19 04:15:53,244 INFO L791 eck$LassoCheckResult]: Stem: 161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 163#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 164#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 168#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 167#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 165#L33-1 main_~i~0#1 := 0; 166#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-11-19 04:15:53,244 INFO L793 eck$LassoCheckResult]: Loop: 179#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 169#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 171#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 185#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 175#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 176#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-11-19 04:15:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-11-19 04:15:53,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:53,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53491892] [2021-11-19 04:15:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:53,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:53,257 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:53,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:53,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:53,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 1 times [2021-11-19 04:15:53,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:53,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218263118] [2021-11-19 04:15:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:53,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:53,337 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:53,365 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -696653093, now seen corresponding path program 1 times [2021-11-19 04:15:53,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:53,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829206352] [2021-11-19 04:15:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:53,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:53,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-11-19 04:15:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:53,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:15:53,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829206352] [2021-11-19 04:15:53,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829206352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:15:53,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:15:53,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:15:53,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795513033] [2021-11-19 04:15:53,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:15:53,512 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:53,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:53,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:53,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:53,515 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:15:53,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:53,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:53,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:53,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-11-19 04:15:53,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:53,516 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:53,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:53,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:53,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:53,614 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:53,614 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:15:53,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:53,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:53,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:53,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:53,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:53,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-19 04:15:53,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:53,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:53,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:53,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:53,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-19 04:15:53,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:15:53,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:54,078 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:15:54,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:54,082 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:54,082 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:54,082 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:54,082 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:54,082 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:15:54,083 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:54,083 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:54,083 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:54,083 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-11-19 04:15:54,083 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:54,083 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:54,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:54,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:54,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:54,197 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:54,197 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:15:54,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:54,202 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:54,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-19 04:15:54,210 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:54,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:54,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:54,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:54,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:54,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:54,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:54,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:54,249 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:15:54,256 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-19 04:15:54,256 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-19 04:15:54,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:54,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:54,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:54,294 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:15:54,294 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:15:54,294 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:15:54,294 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-11-19 04:15:54,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-19 04:15:54,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:54,337 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:15:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:54,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:15:54,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:54,442 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:15:54,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:54,610 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 [2021-11-19 04:15:54,610 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 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) [2021-11-19 04:15:54,870 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 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 136 states and 169 transitions. Complement of second has 13 states. [2021-11-19 04:15:54,876 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 [2021-11-19 04:15:54,877 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) [2021-11-19 04:15:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2021-11-19 04:15:54,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 6 letters. [2021-11-19 04:15:54,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:54,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 14 letters. Loop has 6 letters. [2021-11-19 04:15:54,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:54,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 12 letters. [2021-11-19 04:15:54,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:54,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 169 transitions. [2021-11-19 04:15:54,885 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2021-11-19 04:15:54,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 115 states and 145 transitions. [2021-11-19 04:15:54,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-11-19 04:15:54,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-11-19 04:15:54,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 145 transitions. [2021-11-19 04:15:54,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:15:54,894 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 145 transitions. [2021-11-19 04:15:54,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 145 transitions. [2021-11-19 04:15:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2021-11-19 04:15:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.308641975308642) internal successors, (106), 80 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:15:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2021-11-19 04:15:54,913 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 106 transitions. [2021-11-19 04:15:54,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:15:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:15:54,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:15:54,914 INFO L87 Difference]: Start difference. First operand 81 states and 106 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) [2021-11-19 04:15:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:15:54,928 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-11-19 04:15:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:15:54,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2021-11-19 04:15:54,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-19 04:15:54,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 36 transitions. [2021-11-19 04:15:54,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-11-19 04:15:54,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-19 04:15:54,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2021-11-19 04:15:54,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:15:54,932 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-11-19 04:15:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2021-11-19 04:15:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-19 04:15:54,934 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) [2021-11-19 04:15:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-19 04:15:54,935 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-19 04:15:54,935 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-19 04:15:54,935 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-19 04:15:54,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-11-19 04:15:54,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-19 04:15:54,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:15:54,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:15:54,937 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:54,937 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-19 04:15:54,937 INFO L791 eck$LassoCheckResult]: Stem: 519#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 520#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 521#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 522#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 526#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 525#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 523#L33-1 main_~i~0#1 := 0; 524#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 538#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 535#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 536#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 537#L35-3 [2021-11-19 04:15:54,937 INFO L793 eck$LassoCheckResult]: Loop: 537#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 527#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 529#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 543#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 533#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 534#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 537#L35-3 [2021-11-19 04:15:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 2 times [2021-11-19 04:15:54,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:54,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737574325] [2021-11-19 04:15:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:54,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:54,948 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:54,969 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:54,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 2 times [2021-11-19 04:15:54,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:54,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127622259] [2021-11-19 04:15:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:54,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:54,977 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:54,986 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash -669865, now seen corresponding path program 2 times [2021-11-19 04:15:54,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:54,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887416597] [2021-11-19 04:15:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:54,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:15:55,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:15:55,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887416597] [2021-11-19 04:15:55,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887416597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:15:55,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:15:55,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:15:55,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120887919] [2021-11-19 04:15:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:15:55,117 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:55,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:55,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:55,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:55,118 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:15:55,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:55,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:55,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-11-19 04:15:55,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:55,119 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:55,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:55,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:55,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:55,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:55,242 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:55,242 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:15:55,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:55,243 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:55,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-19 04:15:55,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:55,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:55,277 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:15:55,278 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:15:55,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:55,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:55,322 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:55,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:55,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:55,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-19 04:15:55,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:55,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:55,410 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:55,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:15:55,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-19 04:15:55,741 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:15:55,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:55,745 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:55,745 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:55,745 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:55,746 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:55,746 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:15:55,746 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,746 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:55,746 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:55,746 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-11-19 04:15:55,746 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:55,746 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:55,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:55,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:55,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:55,858 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:55,859 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:15:55,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:55,861 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:55,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:55,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-19 04:15:55,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:55,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:55,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:55,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:55,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:55,881 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:55,881 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:55,897 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:15:55,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:55,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:55,942 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:55,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:55,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:55,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:55,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:55,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:55,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:55,966 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:55,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:55,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-19 04:15:55,985 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:15:55,998 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-19 04:15:55,998 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-19 04:15:55,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:55,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:56,000 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:56,008 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:15:56,009 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:15:56,009 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:15:56,009 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = -4*ULTIMATE.start_main_~j~0#1 + 7 Supporting invariants [] [2021-11-19 04:15:56,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-19 04:15:56,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:56,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:15:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:56,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:15:56,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:56,141 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:15:56,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:56,343 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 [2021-11-19 04:15:56,343 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 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) [2021-11-19 04:15:56,379 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 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 33 states and 40 transitions. Complement of second has 5 states. [2021-11-19 04:15:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-19 04:15:56,382 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) [2021-11-19 04:15:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-19 04:15:56,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-19 04:15:56,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:56,383 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-19 04:15:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:56,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:15:56,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:56,449 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:15:56,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:56,632 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2021-11-19 04:15:56,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 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) [2021-11-19 04:15:56,651 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 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 33 states and 40 transitions. Complement of second has 5 states. [2021-11-19 04:15:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-19 04:15:56,653 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) [2021-11-19 04:15:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-19 04:15:56,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-19 04:15:56,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:56,654 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-19 04:15:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:56,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:15:56,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:56,723 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:15:56,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:56,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:56,939 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 6 loop predicates [2021-11-19 04:15:56,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 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) [2021-11-19 04:15:57,205 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 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 111 states and 139 transitions. Complement of second has 12 states. [2021-11-19 04:15:57,206 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 [2021-11-19 04:15:57,207 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) [2021-11-19 04:15:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 49 transitions. [2021-11-19 04:15:57,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 49 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-19 04:15:57,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:57,208 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-19 04:15:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:15:57,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:57,272 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:15:57,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:15:57,425 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2021-11-19 04:15:57,425 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 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) [2021-11-19 04:15:57,732 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 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 117 states and 144 transitions. Complement of second has 16 states. [2021-11-19 04:15:57,732 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 [2021-11-19 04:15:57,733 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) [2021-11-19 04:15:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2021-11-19 04:15:57,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-19 04:15:57,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:57,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 17 letters. Loop has 6 letters. [2021-11-19 04:15:57,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:57,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 11 letters. Loop has 12 letters. [2021-11-19 04:15:57,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:57,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 144 transitions. [2021-11-19 04:15:57,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-11-19 04:15:57,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 107 states and 133 transitions. [2021-11-19 04:15:57,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-11-19 04:15:57,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-11-19 04:15:57,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 133 transitions. [2021-11-19 04:15:57,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:15:57,743 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 133 transitions. [2021-11-19 04:15:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 133 transitions. [2021-11-19 04:15:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 56. [2021-11-19 04:15:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:15:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-19 04:15:57,749 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-19 04:15:57,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:15:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:15:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:15:57,757 INFO L87 Difference]: Start difference. First operand 56 states and 73 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) [2021-11-19 04:15:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:15:57,788 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-11-19 04:15:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:15:57,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 55 transitions. [2021-11-19 04:15:57,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-19 04:15:57,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 31 states and 37 transitions. [2021-11-19 04:15:57,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-11-19 04:15:57,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-11-19 04:15:57,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2021-11-19 04:15:57,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:15:57,800 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-19 04:15:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2021-11-19 04:15:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-19 04:15:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 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) [2021-11-19 04:15:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-11-19 04:15:57,810 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-19 04:15:57,810 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-19 04:15:57,810 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-19 04:15:57,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2021-11-19 04:15:57,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-19 04:15:57,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:15:57,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:15:57,815 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:57,816 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:57,816 INFO L791 eck$LassoCheckResult]: Stem: 1242#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1243#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1244#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1245#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1249#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1248#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1246#L33-1 main_~i~0#1 := 0; 1247#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1259#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1260#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1272#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1258#L35-3 [2021-11-19 04:15:57,816 INFO L793 eck$LassoCheckResult]: Loop: 1258#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1250#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1251#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1265#L18-2 assume { :end_inline___VERIFIER_assert } true; 1261#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1262#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1267#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1268#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1254#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1255#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1258#L35-3 [2021-11-19 04:15:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 3 times [2021-11-19 04:15:57,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:57,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727897824] [2021-11-19 04:15:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:57,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:57,847 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:57,864 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:57,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:57,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1137044896, now seen corresponding path program 1 times [2021-11-19 04:15:57,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:57,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776251541] [2021-11-19 04:15:57,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:57,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:57,891 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:57,914 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:57,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1923390994, now seen corresponding path program 1 times [2021-11-19 04:15:57,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:57,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981517016] [2021-11-19 04:15:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:57,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:57,932 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:57,960 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:58,118 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:58,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:58,119 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:58,119 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:58,119 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:15:58,119 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:58,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:58,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-11-19 04:15:58,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:58,120 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:58,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,256 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:58,256 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:15:58,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:58,262 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:58,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:58,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:58,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-19 04:15:58,297 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:15:58,297 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:15:58,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:58,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:58,343 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:58,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:58,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:58,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-19 04:15:58,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:15:58,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:15:58,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:58,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:58,434 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:58,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:58,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:58,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-19 04:15:58,452 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:15:58,452 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:15:58,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:58,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:58,479 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:58,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-19 04:15:58,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:58,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:58,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:15:58,497 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:15:58,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:58,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:58,523 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:58,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-19 04:15:58,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:15:58,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:58,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:58,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:58,587 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:58,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-19 04:15:58,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:15:58,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:15:58,885 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:15:58,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:58,888 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:15:58,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:15:58,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:15:58,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:15:58,888 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:15:58,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,888 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:15:58,888 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:15:58,888 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-11-19 04:15:58,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:15:58,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:15:58,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:15:58,994 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:15:58,995 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:15:58,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:58,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:58,998 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:59,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:59,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:59,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:59,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:59,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:59,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:59,022 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:59,022 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:59,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-19 04:15:59,041 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:15:59,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:59,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:59,077 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:59,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:59,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:59,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:59,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:59,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:59,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:59,093 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:59,093 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:59,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-19 04:15:59,109 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:15:59,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:59,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:59,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:59,145 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:59,154 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:59,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:59,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:59,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:59,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:59,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:59,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:59,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:59,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-19 04:15:59,181 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:15:59,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-19 04:15:59,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:59,208 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:59,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-19 04:15:59,211 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:59,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:59,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:59,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:59,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:59,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:59,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:59,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:59,232 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:15:59,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:59,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:59,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:59,259 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:59,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-19 04:15:59,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:15:59,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:15:59,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:15:59,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:15:59,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:15:59,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:15:59,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:15:59,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:15:59,309 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:15:59,315 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-19 04:15:59,315 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-19 04:15:59,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:15:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:59,317 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:15:59,325 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:15:59,326 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:15:59,326 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:15:59,326 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-11-19 04:15:59,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-19 04:15:59,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-19 04:15:59,372 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:15:59,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:59,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:15:59,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:59,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:15:59,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:15:59,502 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-19 04:15:59,502 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:15:59,528 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 53 states and 65 transitions. Complement of second has 6 states. [2021-11-19 04:15:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:15:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:15:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-19 04:15:59,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 10 letters. [2021-11-19 04:15:59,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:59,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 21 letters. Loop has 10 letters. [2021-11-19 04:15:59,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:59,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 20 letters. [2021-11-19 04:15:59,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:15:59,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 65 transitions. [2021-11-19 04:15:59,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-19 04:15:59,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 40 states and 49 transitions. [2021-11-19 04:15:59,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-11-19 04:15:59,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-19 04:15:59,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 49 transitions. [2021-11-19 04:15:59,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:15:59,535 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-11-19 04:15:59,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 49 transitions. [2021-11-19 04:15:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-11-19 04:15:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:15:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-11-19 04:15:59,549 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-11-19 04:15:59,549 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-11-19 04:15:59,549 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-19 04:15:59,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2021-11-19 04:15:59,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-19 04:15:59,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:15:59,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:15:59,554 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:59,554 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:15:59,556 INFO L791 eck$LassoCheckResult]: Stem: 1412#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1413#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1414#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1415#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1419#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1418#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1416#L33-1 main_~i~0#1 := 0; 1417#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1439#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1444#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1441#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1443#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1420#L36-3 [2021-11-19 04:15:59,556 INFO L793 eck$LassoCheckResult]: Loop: 1420#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1421#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1433#L18-2 assume { :end_inline___VERIFIER_assert } true; 1429#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1430#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1436#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1426#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1420#L36-3 [2021-11-19 04:15:59,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:59,556 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 1 times [2021-11-19 04:15:59,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:59,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008463887] [2021-11-19 04:15:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:59,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:59,577 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:59,586 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 1 times [2021-11-19 04:15:59,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:59,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246816061] [2021-11-19 04:15:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:59,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:59,608 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:15:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:15:59,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:15:59,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:15:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 891852308, now seen corresponding path program 2 times [2021-11-19 04:15:59,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:15:59,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664351461] [2021-11-19 04:15:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:15:59,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:15:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:15:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:15:59,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:15:59,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664351461] [2021-11-19 04:15:59,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664351461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:15:59,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53308169] [2021-11-19 04:15:59,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:15:59,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:15:59,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:15:59,698 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:15:59,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-19 04:15:59,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:15:59,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:15:59,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:15:59,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:15:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:15:59,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:15:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:15:59,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53308169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:15:59,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:15:59,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-11-19 04:15:59,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776899219] [2021-11-19 04:15:59,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:15:59,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:00,047 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:00,047 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:00,048 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:00,048 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:00,048 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:16:00,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:00,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:00,048 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:00,048 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-11-19 04:16:00,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:00,048 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:00,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,134 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:00,134 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:16:00,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:00,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:00,135 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:00,142 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:16:00,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:00,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-19 04:16:00,164 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:16:00,165 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:16:00,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:00,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:00,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:00,209 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:00,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:16:00,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:00,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-19 04:16:00,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:00,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:00,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:00,291 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:00,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-19 04:16:00,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:16:00,296 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:00,843 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:16:00,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-11-19 04:16:00,847 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:00,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:00,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:00,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:00,847 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:16:00,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:00,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:00,847 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:00,847 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-11-19 04:16:00,847 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:00,847 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:00,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:00,947 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:00,947 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:16:00,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:00,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:00,949 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:00,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-19 04:16:00,957 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:00,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:00,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:00,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:00,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:16:00,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:00,967 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:16:00,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:00,971 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:16:00,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-11-19 04:16:00,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:00,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:00,998 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:00,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-19 04:16:00,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:01,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:01,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:01,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:01,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:16:01,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:01,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:16:01,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:01,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:16:01,025 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-19 04:16:01,025 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-19 04:16:01,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:01,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:01,033 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:01,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-19 04:16:01,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:16:01,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:16:01,035 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:16:01,035 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 3*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-19 04:16:01,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:01,060 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:16:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:01,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:01,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:01,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:01,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:16:01,194 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-19 04:16:01,195 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:01,225 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 109 transitions. Complement of second has 7 states. [2021-11-19 04:16:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:01,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-19 04:16:01,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 7 letters. [2021-11-19 04:16:01,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:01,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 19 letters. Loop has 7 letters. [2021-11-19 04:16:01,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:01,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 14 letters. [2021-11-19 04:16:01,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:01,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 109 transitions. [2021-11-19 04:16:01,229 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-19 04:16:01,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 84 states and 105 transitions. [2021-11-19 04:16:01,230 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-11-19 04:16:01,230 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-19 04:16:01,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 105 transitions. [2021-11-19 04:16:01,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:16:01,231 INFO L681 BuchiCegarLoop]: Abstraction has 84 states and 105 transitions. [2021-11-19 04:16:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 105 transitions. [2021-11-19 04:16:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2021-11-19 04:16:01,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 80 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-11-19 04:16:01,236 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-11-19 04:16:01,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:16:01,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:16:01,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:16:01,238 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:16:01,330 INFO L93 Difference]: Finished difference Result 125 states and 154 transitions. [2021-11-19 04:16:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:16:01,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 154 transitions. [2021-11-19 04:16:01,336 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-11-19 04:16:01,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 107 states and 133 transitions. [2021-11-19 04:16:01,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-11-19 04:16:01,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-11-19 04:16:01,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 133 transitions. [2021-11-19 04:16:01,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:16:01,338 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 133 transitions. [2021-11-19 04:16:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 133 transitions. [2021-11-19 04:16:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2021-11-19 04:16:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2021-11-19 04:16:01,355 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 111 transitions. [2021-11-19 04:16:01,355 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 111 transitions. [2021-11-19 04:16:01,355 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-19 04:16:01,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 111 transitions. [2021-11-19 04:16:01,356 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-19 04:16:01,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:16:01,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:16:01,357 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:16:01,357 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-19 04:16:01,358 INFO L791 eck$LassoCheckResult]: Stem: 1945#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1946#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1947#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1948#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1952#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1951#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1949#L33-1 main_~i~0#1 := 0; 1950#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1972#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1957#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1958#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1959#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1953#L36-3 [2021-11-19 04:16:01,358 INFO L793 eck$LassoCheckResult]: Loop: 1953#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1954#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1965#L18-2 assume { :end_inline___VERIFIER_assert } true; 1962#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1953#L36-3 [2021-11-19 04:16:01,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 2 times [2021-11-19 04:16:01,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:01,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248186401] [2021-11-19 04:16:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:01,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:01,380 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:01,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2408202, now seen corresponding path program 1 times [2021-11-19 04:16:01,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:01,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438200582] [2021-11-19 04:16:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:01,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:01,403 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:01,411 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:01,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1523990718, now seen corresponding path program 1 times [2021-11-19 04:16:01,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:01,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345529275] [2021-11-19 04:16:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:01,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:01,438 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:01,449 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:01,504 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:01,505 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:01,505 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:01,505 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:01,505 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:16:01,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:01,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:01,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:01,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2021-11-19 04:16:01,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:01,505 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:01,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:01,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:01,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:01,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:01,567 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:16:01,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:01,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:01,568 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:01,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:16:01,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:01,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-19 04:16:01,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-11-19 04:16:01,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:01,637 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:01,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:16:01,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:01,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-19 04:16:01,960 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:16:01,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:01,964 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:01,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:01,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:01,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:01,964 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:16:01,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:01,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:01,964 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:01,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2021-11-19 04:16:01,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:01,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:01,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:01,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:01,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:02,010 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:02,010 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:16:02,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:02,017 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:02,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:02,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:02,047 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:02,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:02,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:16:02,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:02,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:16:02,049 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:02,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-19 04:16:02,069 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:16:02,076 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-19 04:16:02,076 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-19 04:16:02,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:02,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:02,078 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:02,080 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:16:02,080 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:16:02,080 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:16:02,080 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-19 04:16:02,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-19 04:16:02,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:02,130 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:16:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:02,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:02,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:02,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:02,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:16:02,224 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-19 04:16:02,224 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:02,246 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 142 states and 182 transitions. Complement of second has 7 states. [2021-11-19 04:16:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-11-19 04:16:02,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-19 04:16:02,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:02,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-11-19 04:16:02,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:02,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-11-19 04:16:02,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:02,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 182 transitions. [2021-11-19 04:16:02,277 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-19 04:16:02,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 114 states and 143 transitions. [2021-11-19 04:16:02,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-11-19 04:16:02,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-19 04:16:02,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 143 transitions. [2021-11-19 04:16:02,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:16:02,279 INFO L681 BuchiCegarLoop]: Abstraction has 114 states and 143 transitions. [2021-11-19 04:16:02,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 143 transitions. [2021-11-19 04:16:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2021-11-19 04:16:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 86 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2021-11-19 04:16:02,291 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-11-19 04:16:02,291 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-11-19 04:16:02,291 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-19 04:16:02,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 109 transitions. [2021-11-19 04:16:02,292 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-19 04:16:02,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:16:02,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:16:02,294 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:16:02,294 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:16:02,294 INFO L791 eck$LassoCheckResult]: Stem: 2246#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 2247#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2248#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 2249#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 2253#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 2252#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 2250#L33-1 main_~i~0#1 := 0; 2251#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2276#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2296#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2292#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2261#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2262#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2313#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2317#L18-2 assume { :end_inline___VERIFIER_assert } true; 2315#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2312#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 2300#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 2297#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2294#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2289#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2285#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2283#L36-3 [2021-11-19 04:16:02,294 INFO L793 eck$LassoCheckResult]: Loop: 2283#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2268#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2269#L18-2 assume { :end_inline___VERIFIER_assert } true; 2280#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2279#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 2272#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 2273#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2283#L36-3 [2021-11-19 04:16:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash 504421370, now seen corresponding path program 3 times [2021-11-19 04:16:02,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:02,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554197636] [2021-11-19 04:16:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:02,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:02,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:02,329 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:02,356 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:02,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:02,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 2 times [2021-11-19 04:16:02,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:02,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936675714] [2021-11-19 04:16:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:02,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:02,363 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:02,373 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:02,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1334545203, now seen corresponding path program 4 times [2021-11-19 04:16:02,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:02,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719315179] [2021-11-19 04:16:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:02,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:02,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:16:02,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:16:02,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719315179] [2021-11-19 04:16:02,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719315179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:16:02,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422954973] [2021-11-19 04:16:02,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 04:16:02,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:16:02,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:02,435 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:16:02,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-19 04:16:02,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 04:16:02,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:16:02,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:16:02,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:16:02,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:16:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 04:16:02,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422954973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:16:02,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:16:02,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-11-19 04:16:02,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864239247] [2021-11-19 04:16:02,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:16:02,842 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:02,842 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:02,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:02,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:02,842 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:16:02,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:02,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:02,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:02,843 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-11-19 04:16:02,843 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:02,843 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:02,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:02,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:02,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:02,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:02,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:02,927 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:16:02,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:02,933 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:02,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-19 04:16:02,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:16:02,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:02,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-19 04:16:02,949 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-19 04:16:02,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-11-19 04:16:02,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:02,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:02,975 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:02,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-19 04:16:02,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:16:02,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:03,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-11-19 04:16:03,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:03,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:03,011 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:03,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-19 04:16:03,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:16:03,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:03,543 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:16:03,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:03,551 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:03,551 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:03,551 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:03,551 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:03,551 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:16:03,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:03,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:03,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:03,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-11-19 04:16:03,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:03,551 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:03,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:03,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:03,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:03,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:03,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:03,635 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:16:03,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:03,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:03,636 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:03,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-19 04:16:03,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:03,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:03,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:03,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:03,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:16:03,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:03,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:16:03,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:03,689 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:16:03,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:03,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:03,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:03,734 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:03,737 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:03,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-19 04:16:03,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:03,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:03,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:03,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:16:03,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:03,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:16:03,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:03,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:16:03,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:03,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:03,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:03,777 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:03,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-19 04:16:03,779 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:03,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:03,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:03,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:03,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:16:03,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:03,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:16:03,789 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:03,792 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:16:03,797 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-19 04:16:03,797 INFO L444 ModelExtractionUtils]: 1 out of 6 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-11-19 04:16:03,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:03,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:03,798 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:03,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-19 04:16:03,800 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:16:03,800 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:16:03,800 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:16:03,800 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-11-19 04:16:03,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-11-19 04:16:03,825 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:16:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:03,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:03,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:03,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:03,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:16:04,007 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-19 04:16:04,007 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,071 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 127 states and 158 transitions. Complement of second has 7 states. [2021-11-19 04:16:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-19 04:16:04,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2021-11-19 04:16:04,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:04,072 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-19 04:16:04,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:04,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:04,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:04,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:04,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:16:04,243 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 [2021-11-19 04:16:04,243 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,269 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 127 states and 158 transitions. Complement of second has 7 states. [2021-11-19 04:16:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-19 04:16:04,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2021-11-19 04:16:04,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:04,271 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-19 04:16:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:04,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:04,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:04,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:04,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 04:16:04,419 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 [2021-11-19 04:16:04,419 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 145 states and 182 transitions. Complement of second has 6 states. [2021-11-19 04:16:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2021-11-19 04:16:04,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 7 letters. [2021-11-19 04:16:04,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:04,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 29 letters. Loop has 7 letters. [2021-11-19 04:16:04,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:04,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 14 letters. [2021-11-19 04:16:04,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:04,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 182 transitions. [2021-11-19 04:16:04,452 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-19 04:16:04,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 106 states and 132 transitions. [2021-11-19 04:16:04,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-11-19 04:16:04,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-19 04:16:04,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2021-11-19 04:16:04,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:16:04,455 INFO L681 BuchiCegarLoop]: Abstraction has 106 states and 132 transitions. [2021-11-19 04:16:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2021-11-19 04:16:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2021-11-19 04:16:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 66 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2021-11-19 04:16:04,459 INFO L704 BuchiCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-11-19 04:16:04,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:16:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 04:16:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:16:04,461 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:16:04,646 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2021-11-19 04:16:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 04:16:04,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 144 transitions. [2021-11-19 04:16:04,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-19 04:16:04,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 124 states and 144 transitions. [2021-11-19 04:16:04,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-11-19 04:16:04,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-11-19 04:16:04,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 144 transitions. [2021-11-19 04:16:04,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-19 04:16:04,651 INFO L681 BuchiCegarLoop]: Abstraction has 124 states and 144 transitions. [2021-11-19 04:16:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states and 144 transitions. [2021-11-19 04:16:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2021-11-19 04:16:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 84 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2021-11-19 04:16:04,655 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 103 transitions. [2021-11-19 04:16:04,655 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 103 transitions. [2021-11-19 04:16:04,655 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-19 04:16:04,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 103 transitions. [2021-11-19 04:16:04,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-19 04:16:04,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-19 04:16:04,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-19 04:16:04,658 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:16:04,658 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-19 04:16:04,658 INFO L791 eck$LassoCheckResult]: Stem: 3413#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 3414#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3415#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 3416#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 3420#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 3419#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 3417#L33-1 main_~i~0#1 := 0; 3418#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3441#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3461#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3460#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3427#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3428#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3472#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3481#L18-2 assume { :end_inline___VERIFIER_assert } true; 3474#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3471#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 3469#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 3468#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3445#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3446#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3465#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3466#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3434#L18 [2021-11-19 04:16:04,658 INFO L793 eck$LassoCheckResult]: Loop: 3434#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3435#L18-2 assume { :end_inline___VERIFIER_assert } true; 3431#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3432#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3434#L18 [2021-11-19 04:16:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1542806666, now seen corresponding path program 5 times [2021-11-19 04:16:04,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:04,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586808790] [2021-11-19 04:16:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:04,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:04,687 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:04,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2619672, now seen corresponding path program 2 times [2021-11-19 04:16:04,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:04,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193622448] [2021-11-19 04:16:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:04,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:04,719 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:04,727 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1902519795, now seen corresponding path program 6 times [2021-11-19 04:16:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:16:04,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523695488] [2021-11-19 04:16:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:16:04,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:16:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:04,744 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:16:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:16:04,768 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:16:04,821 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:04,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:04,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:04,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:04,822 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-19 04:16:04,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:04,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:04,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:04,823 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-11-19 04:16:04,823 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:04,823 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:04,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:04,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:05,102 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:05,102 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-19 04:16:05,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:05,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:05,103 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:05,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-19 04:16:05,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:05,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-19 04:16:05,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:05,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:05,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:05,170 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:05,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-19 04:16:05,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-19 04:16:05,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-19 04:16:06,159 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-19 04:16:06,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:06,163 INFO L210 LassoAnalysis]: Preferences: [2021-11-19 04:16:06,163 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-19 04:16:06,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-19 04:16:06,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-19 04:16:06,164 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-19 04:16:06,164 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:06,164 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-19 04:16:06,164 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-19 04:16:06,164 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-11-19 04:16:06,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-19 04:16:06,164 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-19 04:16:06,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:06,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-19 04:16:06,459 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-19 04:16:06,459 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-19 04:16:06,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:06,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:06,460 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:06,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-19 04:16:06,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:06,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:06,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:06,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:06,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-19 04:16:06,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:06,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-19 04:16:06,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:06,497 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-19 04:16:06,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-11-19 04:16:06,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:06,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:06,526 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:06,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-19 04:16:06,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-19 04:16:06,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-19 04:16:06,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-19 04:16:06,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-19 04:16:06,537 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-11-19 04:16:06,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-19 04:16:06,544 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-11-19 04:16:06,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-19 04:16:06,555 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-19 04:16:06,560 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-19 04:16:06,560 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-19 04:16:06,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-19 04:16:06,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:16:06,561 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-19 04:16:06,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-19 04:16:06,566 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-19 04:16:06,566 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-19 04:16:06,566 INFO L513 LassoAnalysis]: Proved termination. [2021-11-19 04:16:06,566 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-19 04:16:06,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-11-19 04:16:06,590 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-19 04:16:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:06,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:06,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:06,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:06,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:06,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:16:06,728 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-19 04:16:06,728 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:06,754 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) Result 187 states and 212 transitions. Complement of second has 7 states. [2021-11-19 04:16:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-19 04:16:06,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2021-11-19 04:16:06,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:06,755 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-19 04:16:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:06,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:06,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:06,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:06,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:16:06,868 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 [2021-11-19 04:16:06,868 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:06,894 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) Result 187 states and 212 transitions. Complement of second has 7 states. [2021-11-19 04:16:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-19 04:16:06,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2021-11-19 04:16:06,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:06,896 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-19 04:16:06,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:16:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:06,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:16:06,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:16:06,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:16:06,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:16:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:16:07,021 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 [2021-11-19 04:16:07,021 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:07,049 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) Result 135 states and 154 transitions. Complement of second has 6 states. [2021-11-19 04:16:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-19 04:16:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:16:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-11-19 04:16:07,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 4 letters. [2021-11-19 04:16:07,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:07,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 27 letters. Loop has 4 letters. [2021-11-19 04:16:07,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:07,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 8 letters. [2021-11-19 04:16:07,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-19 04:16:07,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 154 transitions. [2021-11-19 04:16:07,052 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-19 04:16:07,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-11-19 04:16:07,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-19 04:16:07,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-19 04:16:07,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-19 04:16:07,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:16:07,052 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 04:16:07,052 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 04:16:07,052 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 04:16:07,052 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-19 04:16:07,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-19 04:16:07,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-19 04:16:07,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-19 04:16:07,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 04:16:07 BoogieIcfgContainer [2021-11-19 04:16:07,059 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-19 04:16:07,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:16:07,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:16:07,060 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:16:07,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:51" (3/4) ... [2021-11-19 04:16:07,064 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 04:16:07,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:16:07,065 INFO L158 Benchmark]: Toolchain (without parser) took 16335.05ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 63.2MB in the beginning and 89.7MB in the end (delta: -26.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2021-11-19 04:16:07,066 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:16:07,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.50ms. Allocated memory is still 96.5MB. Free memory was 62.9MB in the beginning and 71.9MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:16:07,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.25ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 70.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:16:07,067 INFO L158 Benchmark]: Boogie Preprocessor took 45.31ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 69.4MB in the end (delta: 904.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:16:07,067 INFO L158 Benchmark]: RCFGBuilder took 319.03ms. Allocated memory is still 96.5MB. Free memory was 69.4MB in the beginning and 60.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:16:07,068 INFO L158 Benchmark]: BuchiAutomizer took 15629.46ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 59.7MB in the beginning and 89.7MB in the end (delta: -30.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-11-19 04:16:07,068 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 142.6MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:16:07,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.50ms. Allocated memory is still 96.5MB. Free memory was 62.9MB in the beginning and 71.9MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.25ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 70.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.31ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 69.4MB in the end (delta: 904.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.03ms. Allocated memory is still 96.5MB. Free memory was 69.4MB in the beginning and 60.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 15629.46ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 59.7MB in the beginning and 89.7MB in the end (delta: -30.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 142.6MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (5 trivial, 5 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 -1 * j + n and consists of 7 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One deterministic module has affine ranking function j + -1 * k and consists of 4 locations. One nondeterministic module has affine ranking function 7 + -4 * j and consists of 9 locations. One nondeterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.5s and 10 iterations. TraceHistogramMax:3. Analysis of lassos took 10.7s. Construction of modules took 0.5s. Büchi inclusion checks took 3.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 226 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 87 states and ocurred in iteration 6. Nontrivial modules had stage [5, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 4/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 413 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 551 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 248 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 595 IncrementalHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 303 mSDtfsCounter, 595 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital33 mio100 ax100 hnf100 lsp97 ukn95 mio100 lsp100 div100 bol100 ite100 ukn100 eq145 hnf94 smp98 dnf150 smp93 tf105 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-19 04:16:07,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:07,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-19 04:16:07,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778705e7-5b26-475f-999f-c5754836715a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE