./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Sunset.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a80d10d797b477078e6dad6d87594a2a0aea1065 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:11:02,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:11:02,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:11:02,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:11:02,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:11:02,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:11:02,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:11:02,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:11:02,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:11:02,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:11:02,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:11:02,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:11:02,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:11:02,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:11:02,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:11:02,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:11:02,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:11:02,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:11:02,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:11:02,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:11:02,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:11:02,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:11:02,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:11:02,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:11:02,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:11:02,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:11:02,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:11:02,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:11:02,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:11:02,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:11:02,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:11:02,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:11:02,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:11:02,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:11:02,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:11:02,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:11:02,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:11:02,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:11:02,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:11:02,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:11:02,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:11:02,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 01:11:02,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:11:02,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:11:02,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:11:02,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:11:02,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:11:02,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:11:02,634 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:11:02,634 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:11:02,634 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:11:02,635 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:11:02,636 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:11:02,636 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:11:02,636 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:11:02,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:11:02,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:11:02,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:11:02,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:11:02,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:11:02,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:11:02,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:11:02,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:11:02,638 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:11:02,639 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:11:02,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:11:02,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:11:02,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:11:02,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:11:02,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:11:02,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:11:02,641 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:11:02,642 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_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80d10d797b477078e6dad6d87594a2a0aea1065 [2021-10-13 01:11:02,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:11:02,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:11:02,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:11:02,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:11:02,959 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:11:02,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-10-13 01:11:03,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/data/4747d8ddc/b34b299cbbff43c1a6f4535ed90df11d/FLAG6eb5b8df0 [2021-10-13 01:11:03,616 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:11:03,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-10-13 01:11:03,623 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/data/4747d8ddc/b34b299cbbff43c1a6f4535ed90df11d/FLAG6eb5b8df0 [2021-10-13 01:11:03,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/data/4747d8ddc/b34b299cbbff43c1a6f4535ed90df11d [2021-10-13 01:11:03,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:11:03,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:11:04,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:11:04,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:11:04,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:11:04,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:03" (1/1) ... [2021-10-13 01:11:04,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a502e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04, skipping insertion in model container [2021-10-13 01:11:04,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:03" (1/1) ... [2021-10-13 01:11:04,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:11:04,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:11:04,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:11:04,258 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:11:04,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:11:04,297 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:11:04,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04 WrapperNode [2021-10-13 01:11:04,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:11:04,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:11:04,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:11:04,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:11:04,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:11:04,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:11:04,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:11:04,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:11:04,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:11:04,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:11:04,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:11:04,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:11:04,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (1/1) ... [2021-10-13 01:11:04,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:04,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:04,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:11:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:11:04,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:11:04,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:11:04,651 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 01:11:04,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:04 BoogieIcfgContainer [2021-10-13 01:11:04,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:11:04,656 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:11:04,657 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:11:04,660 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:11:04,661 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:11:04,662 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:11:03" (1/3) ... [2021-10-13 01:11:04,664 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55543506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:11:04, skipping insertion in model container [2021-10-13 01:11:04,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:11:04,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:04" (2/3) ... [2021-10-13 01:11:04,665 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55543506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:11:04, skipping insertion in model container [2021-10-13 01:11:04,665 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:11:04,665 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:04" (3/3) ... [2021-10-13 01:11:04,667 INFO L389 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2021-10-13 01:11:04,736 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:11:04,736 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:11:04,737 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:11:04,737 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:11:04,737 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:11:04,737 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:11:04,737 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:11:04,738 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:11:04,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:04,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:11:04,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:04,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:04,786 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 01:11:04,786 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:04,786 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:11:04,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:04,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:11:04,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:04,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:04,790 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 01:11:04,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:04,798 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4#L13-1true [2021-10-13 01:11:04,800 INFO L793 eck$LassoCheckResult]: Loop: 4#L13-1true assume !!(main_~i~0 > 10); 7#L10true assume 25 == main_~i~0;main_~i~0 := 30; 5#L10-2true assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4#L13-1true [2021-10-13 01:11:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:04,808 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 01:11:04,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:04,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951521547] [2021-10-13 01:11:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:04,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:04,923 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:04,952 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:04,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:04,957 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2021-10-13 01:11:04,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:04,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935171856] [2021-10-13 01:11:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:04,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:04,986 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:05,008 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2021-10-13 01:11:05,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:05,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537303562] [2021-10-13 01:11:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:05,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:05,026 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:05,034 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:05,134 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:05,145 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:05,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:05,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:05,146 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:05,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:05,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:05,147 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-10-13 01:11:05,147 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:05,147 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:05,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:05,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:05,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:05,345 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:05,346 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:05,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:05,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:05,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:05,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:05,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 01:11:05,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:05,405 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:05,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:05,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:05,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:05,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:05,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:05,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 01:11:05,492 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:05,492 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:05,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:05,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:05,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:05,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:05,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:05,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 01:11:05,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:05,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:05,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:05,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 01:11:05,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:05,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:05,646 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:05,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:05,688 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:05,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:05,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:05,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:05,689 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:05,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:05,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:05,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-10-13 01:11:05,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:05,690 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:05,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:05,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:05,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:05,854 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:05,860 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:05,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:05,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:05,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 01:11:05,894 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:05,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:05,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:05,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:05,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:05,913 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:05,913 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:05,928 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:05,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-13 01:11:05,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:05,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:05,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:05,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 01:11:05,959 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:05,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:05,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:05,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:05,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:05,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:05,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:05,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:05,975 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:06,005 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:06,005 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:06,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:06,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:06,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:06,032 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:06,032 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:06,033 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2021-10-13 01:11:06,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 01:11:06,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:06,074 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:06,103 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:06,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:06,112 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:06,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:06,192 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:06,194 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:06,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 27 states and 35 transitions. Complement of second has 6 states. [2021-10-13 01:11:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-10-13 01:11:06,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-13 01:11:06,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:06,263 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:06,283 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:06,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:06,295 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:06,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:06,356 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:06,356 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:06,391 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 28 states and 38 transitions. Complement of second has 8 states. [2021-10-13 01:11:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-10-13 01:11:06,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-13 01:11:06,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:06,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-13 01:11:06,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:06,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-13 01:11:06,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:06,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2021-10-13 01:11:06,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:11:06,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2021-10-13 01:11:06,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-13 01:11:06,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-13 01:11:06,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2021-10-13 01:11:06,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:06,408 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2021-10-13 01:11:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2021-10-13 01:11:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-13 01:11:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 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) [2021-10-13 01:11:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2021-10-13 01:11:06,435 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-10-13 01:11:06,435 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-10-13 01:11:06,435 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:11:06,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2021-10-13 01:11:06,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:11:06,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:06,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:06,438 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 01:11:06,438 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:06,439 INFO L791 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 130#L13-1 assume !!(main_~i~0 > 10); 125#L10 assume !(25 == main_~i~0); 131#L10-2 [2021-10-13 01:11:06,439 INFO L793 eck$LassoCheckResult]: Loop: 131#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 122#L13-1 assume !!(main_~i~0 > 10); 123#L10 assume 25 == main_~i~0;main_~i~0 := 30; 131#L10-2 [2021-10-13 01:11:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-13 01:11:06,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:06,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125034089] [2021-10-13 01:11:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:06,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:06,447 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:06,453 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:06,454 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2021-10-13 01:11:06,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:06,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471704340] [2021-10-13 01:11:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:06,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:06,466 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:06,480 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:06,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:06,483 INFO L82 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2021-10-13 01:11:06,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:06,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404820800] [2021-10-13 01:11:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:06,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:06,497 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:06,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:06,539 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:06,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:06,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:06,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:06,539 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:06,540 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:06,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:06,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-10-13 01:11:06,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:06,540 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:06,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:06,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:06,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:06,591 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:06,591 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:06,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:06,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:06,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:06,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:06,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 01:11:06,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:06,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:06,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:06,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:06,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:06,672 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:06,672 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:06,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 01:11:06,704 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:06,704 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:06,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:06,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:06,733 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:06,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 01:11:06,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:06,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:06,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:06,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:06,798 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:06,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:06,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:06,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 01:11:06,835 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:06,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:06,872 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:06,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:06,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:06,872 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:06,872 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:06,873 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:06,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:06,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-10-13 01:11:06,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:06,873 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:06,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:06,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:06,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:06,923 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:06,924 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:06,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:06,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:06,925 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:06,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 01:11:06,935 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:06,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:06,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:06,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:06,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:06,950 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:06,951 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:06,967 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:07,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,007 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:07,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:07,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:07,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:07,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:07,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 01:11:07,025 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:07,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:07,043 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:07,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,072 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 01:11:07,076 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:07,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:07,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:07,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:07,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:07,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:07,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:07,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:07,127 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:07,131 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:07,131 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:07,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,137 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,138 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:07,138 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:07,138 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:07,139 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2021-10-13 01:11:07,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 01:11:07,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,176 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:07,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:07,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:07,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:07,213 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:07,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:07,229 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:07,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:07,246 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 34 transitions. Complement of second has 5 states. [2021-10-13 01:11:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-13 01:11:07,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-13 01:11:07,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:07,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-13 01:11:07,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:07,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-13 01:11:07,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:07,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2021-10-13 01:11:07,249 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-13 01:11:07,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2021-10-13 01:11:07,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-13 01:11:07,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-10-13 01:11:07,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2021-10-13 01:11:07,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:07,251 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2021-10-13 01:11:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2021-10-13 01:11:07,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-13 01:11:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 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) [2021-10-13 01:11:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2021-10-13 01:11:07,254 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-10-13 01:11:07,254 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-10-13 01:11:07,254 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:11:07,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2021-10-13 01:11:07,255 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-13 01:11:07,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:07,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:07,256 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:11:07,256 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:07,256 INFO L791 eck$LassoCheckResult]: Stem: 201#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 202#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 193#L13-1 [2021-10-13 01:11:07,256 INFO L793 eck$LassoCheckResult]: Loop: 193#L13-1 assume !!(main_~i~0 > 10); 194#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 193#L13-1 [2021-10-13 01:11:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:07,256 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2021-10-13 01:11:07,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:07,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449776955] [2021-10-13 01:11:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:07,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:07,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:11:07,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449776955] [2021-10-13 01:11:07,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449776955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:11:07,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:11:07,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:11:07,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570133802] [2021-10-13 01:11:07,297 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:11:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:07,297 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2021-10-13 01:11:07,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:07,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448263448] [2021-10-13 01:11:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:07,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:07,302 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:07,306 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:07,326 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:07,326 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:07,326 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:07,326 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:07,327 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:07,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:07,327 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:07,327 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-10-13 01:11:07,327 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:07,327 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:07,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:07,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:07,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:07,374 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:07,374 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:07,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,380 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:07,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:07,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 01:11:07,415 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:07,415 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:07,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 01:11:07,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:07,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:07,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,520 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:07,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:07,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 01:11:07,555 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:07,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,580 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:07,581 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:07,581 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:07,581 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:07,581 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:07,581 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,581 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:07,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:07,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-10-13 01:11:07,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:07,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:07,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:07,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:07,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:07,664 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:07,664 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:07,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,665 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-13 01:11:07,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 01:11:07,700 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:07,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:07,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:07,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:07,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:07,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:07,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:07,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:07,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,724 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:07,726 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:07,726 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:07,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:07,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:07,727 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:07,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 01:11:07,732 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:07,732 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:07,732 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:07,732 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2021-10-13 01:11:07,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:07,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:07,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:07,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:07,799 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:07,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:07,832 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:07,833 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:07,849 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 42 states and 66 transitions. Complement of second has 5 states. [2021-10-13 01:11:07,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:07,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-13 01:11:07,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:07,851 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:07,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:07,891 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:07,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:07,933 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:07,934 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:07,964 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 44 states and 70 transitions. Complement of second has 7 states. [2021-10-13 01:11:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 01:11:07,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-13 01:11:07,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:07,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-13 01:11:07,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:07,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-13 01:11:07,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:07,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2021-10-13 01:11:07,972 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-10-13 01:11:07,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2021-10-13 01:11:07,977 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-13 01:11:07,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-10-13 01:11:07,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2021-10-13 01:11:07,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:07,979 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2021-10-13 01:11:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2021-10-13 01:11:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-10-13 01:11:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2021-10-13 01:11:07,986 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2021-10-13 01:11:07,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:11:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:11:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:11:07,990 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:11:08,009 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-13 01:11:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:11:08,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2021-10-13 01:11:08,011 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-13 01:11:08,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2021-10-13 01:11:08,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-13 01:11:08,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-13 01:11:08,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2021-10-13 01:11:08,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:08,013 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-10-13 01:11:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2021-10-13 01:11:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-13 01:11:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 20 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) [2021-10-13 01:11:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2021-10-13 01:11:08,018 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-10-13 01:11:08,018 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-10-13 01:11:08,019 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:11:08,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2021-10-13 01:11:08,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:11:08,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:08,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:08,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2021-10-13 01:11:08,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:08,023 INFO L791 eck$LassoCheckResult]: Stem: 444#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 445#L13-1 assume !!(main_~i~0 > 10); 450#L10 assume !(25 == main_~i~0); 451#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 446#L10 assume !(25 == main_~i~0); 441#L10-2 [2021-10-13 01:11:08,023 INFO L793 eck$LassoCheckResult]: Loop: 441#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 437#L13-1 assume !!(main_~i~0 > 10); 438#L10 assume 25 == main_~i~0;main_~i~0 := 30; 441#L10-2 [2021-10-13 01:11:08,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,023 INFO L82 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2021-10-13 01:11:08,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:08,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461250129] [2021-10-13 01:11:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:08,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,040 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,044 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,045 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2021-10-13 01:11:08,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:08,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196391052] [2021-10-13 01:11:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:08,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,048 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,052 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,052 INFO L82 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2021-10-13 01:11:08,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:08,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841975126] [2021-10-13 01:11:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:08,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,058 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:08,081 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:08,081 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:08,082 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:08,082 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:08,082 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:08,082 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,082 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:08,082 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:08,082 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2021-10-13 01:11:08,082 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:08,082 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:08,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,118 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:08,119 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:08,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:08,120 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:08,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:08,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:08,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 01:11:08,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:08,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:08,197 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:08,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 01:11:08,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:08,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:08,223 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:08,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:08,241 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:08,242 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:08,242 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:08,242 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:08,242 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:08,242 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:08,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:08,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2021-10-13 01:11:08,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:08,242 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:08,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,289 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:08,289 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:08,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:08,290 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:08,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 01:11:08,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:08,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:08,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:08,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:08,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:08,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:08,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:08,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:08,323 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:08,326 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:08,326 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:08,327 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:08,332 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:08,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:08,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:08,334 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:08,334 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2021-10-13 01:11:08,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 01:11:08,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:08,368 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:08,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:08,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:08,424 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:08,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:08,443 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:08,443 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,462 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 41 transitions. Complement of second has 5 states. [2021-10-13 01:11:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:08,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-13 01:11:08,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:08,464 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:08,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:08,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:08,503 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:08,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:08,522 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:08,523 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,539 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 41 transitions. Complement of second has 5 states. [2021-10-13 01:11:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:08,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-13 01:11:08,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:08,540 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:08,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:08,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:08,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:08,573 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:08,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:08,590 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:08,590 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,609 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 47 transitions. Complement of second has 6 states. [2021-10-13 01:11:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-10-13 01:11:08,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-13 01:11:08,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:08,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2021-10-13 01:11:08,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:08,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2021-10-13 01:11:08,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:08,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2021-10-13 01:11:08,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 01:11:08,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2021-10-13 01:11:08,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-13 01:11:08,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-13 01:11:08,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2021-10-13 01:11:08,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:08,616 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2021-10-13 01:11:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2021-10-13 01:11:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2021-10-13 01:11:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-10-13 01:11:08,621 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-13 01:11:08,621 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-13 01:11:08,621 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 01:11:08,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-10-13 01:11:08,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 01:11:08,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:08,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:08,623 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:11:08,623 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:08,623 INFO L791 eck$LassoCheckResult]: Stem: 667#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 668#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 662#L13-1 [2021-10-13 01:11:08,624 INFO L793 eck$LassoCheckResult]: Loop: 662#L13-1 assume !!(main_~i~0 > 10); 665#L10 assume !(25 == main_~i~0); 660#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 662#L13-1 [2021-10-13 01:11:08,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,624 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2021-10-13 01:11:08,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:08,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104351318] [2021-10-13 01:11:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:08,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,640 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,644 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:08,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,645 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2021-10-13 01:11:08,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:08,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181070730] [2021-10-13 01:11:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:08,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,648 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:08,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:08,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2021-10-13 01:11:08,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:08,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086345603] [2021-10-13 01:11:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:08,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,672 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:08,681 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:08,704 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:08,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:08,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:08,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:08,705 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:08,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:08,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:08,705 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-10-13 01:11:08,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:08,705 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:08,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,787 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:08,787 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:08,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:08,788 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:08,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:08,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:08,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 01:11:08,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:08,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:08,853 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:08,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:08,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:08,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 01:11:08,935 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:08,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:08,939 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:08,939 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:08,939 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:08,939 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:08,939 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:08,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:08,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:08,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:08,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-10-13 01:11:08,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:08,940 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:08,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:08,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:09,024 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:09,024 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:09,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:09,032 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:09,036 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 [2021-10-13 01:11:09,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:09,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:09,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:09,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:09,049 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:09,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:09,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 01:11:09,061 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:09,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:09,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:09,096 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:09,101 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:09,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:09,111 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:09,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:09,111 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 01:11:09,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:09,113 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 01:11:09,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:09,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 01:11:09,135 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:09,137 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 01:11:09,137 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:09,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:09,139 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:09,145 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:09,145 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:09,145 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:09,145 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:11:09,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 01:11:09,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:09,185 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,212 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:09,246 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:09,246 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,266 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 47 transitions. Complement of second has 5 states. [2021-10-13 01:11:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:09,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-13 01:11:09,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-13 01:11:09,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-13 01:11:09,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2021-10-13 01:11:09,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 01:11:09,277 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2021-10-13 01:11:09,277 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-13 01:11:09,277 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-13 01:11:09,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2021-10-13 01:11:09,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:09,278 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-10-13 01:11:09,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2021-10-13 01:11:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-10-13 01:11:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2021-10-13 01:11:09,280 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-10-13 01:11:09,280 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-10-13 01:11:09,280 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 01:11:09,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2021-10-13 01:11:09,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 01:11:09,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:09,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:09,281 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-10-13 01:11:09,281 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:09,281 INFO L791 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 758#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 752#L13-1 assume !!(main_~i~0 > 10); 753#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2021-10-13 01:11:09,311 INFO L793 eck$LassoCheckResult]: Loop: 761#L13-1 assume !!(main_~i~0 > 10); 771#L10 assume !(25 == main_~i~0); 773#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2021-10-13 01:11:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2021-10-13 01:11:09,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:09,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869707883] [2021-10-13 01:11:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:09,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,317 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,320 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:09,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2021-10-13 01:11:09,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:09,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338734339] [2021-10-13 01:11:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:09,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,324 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,329 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2021-10-13 01:11:09,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:09,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025858288] [2021-10-13 01:11:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:09,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:09,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,343 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:09,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:09,400 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:09,400 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:09,400 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:09,400 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:09,400 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:09,400 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,400 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:09,400 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:09,400 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2021-10-13 01:11:09,400 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:09,401 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:09,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:09,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:09,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:09,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:09,488 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:09,489 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:09,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:09,490 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:09,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:09,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:09,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 01:11:09,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:09,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:09,551 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:09,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:09,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:09,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 01:11:09,601 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:09,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-13 01:11:09,603 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:09,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:09,603 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:09,603 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:09,604 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:09,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:09,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:09,604 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2021-10-13 01:11:09,604 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:09,604 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:09,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:09,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:09,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:09,686 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:09,686 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:09,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:09,687 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:09,688 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:09,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 01:11:09,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:09,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:09,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:09,696 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 01:11:09,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:09,697 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 01:11:09,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:09,700 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:09,703 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:09,703 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:11:09,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:09,704 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:09,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-13 01:11:09,708 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:09,708 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:09,708 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:09,709 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:11:09,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-13 01:11:09,728 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:09,804 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:09,804 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,817 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 47 transitions. Complement of second has 5 states. [2021-10-13 01:11:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:09,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-13 01:11:09,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,818 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,852 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:09,881 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:09,881 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 47 transitions. Complement of second has 5 states. [2021-10-13 01:11:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:09,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:09,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-13 01:11:09,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,893 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:09,928 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:11:09,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:09,956 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:09,956 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,967 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 37 states and 52 transitions. Complement of second has 4 states. [2021-10-13 01:11:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-13 01:11:09,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-13 01:11:09,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2021-10-13 01:11:09,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2021-10-13 01:11:09,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:09,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2021-10-13 01:11:09,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-13 01:11:09,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2021-10-13 01:11:09,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-13 01:11:09,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-13 01:11:09,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2021-10-13 01:11:09,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:09,972 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-10-13 01:11:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2021-10-13 01:11:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-10-13 01:11:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-10-13 01:11:09,973 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-13 01:11:09,973 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-13 01:11:09,973 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 01:11:09,973 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-10-13 01:11:09,973 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-13 01:11:09,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:09,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:09,974 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:11:09,974 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-10-13 01:11:09,974 INFO L791 eck$LassoCheckResult]: Stem: 1009#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1010#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1003#L13-1 [2021-10-13 01:11:09,974 INFO L793 eck$LassoCheckResult]: Loop: 1003#L13-1 assume !!(main_~i~0 > 10); 1004#L10 assume !(25 == main_~i~0); 1008#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1007#L13-1 assume !!(main_~i~0 > 10); 1015#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1014#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1003#L13-1 [2021-10-13 01:11:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,974 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2021-10-13 01:11:09,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:09,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983701741] [2021-10-13 01:11:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:09,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,977 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:09,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2021-10-13 01:11:09,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:09,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680343304] [2021-10-13 01:11:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:09,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,985 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,989 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:09,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2021-10-13 01:11:09,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:09,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196157944] [2021-10-13 01:11:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:09,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,995 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:09,999 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:10,023 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:10,023 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:10,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:10,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:10,023 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:10,024 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,024 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:10,024 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:10,024 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2021-10-13 01:11:10,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:10,024 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:10,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,069 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:10,070 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:10,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,071 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:10,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:10,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-13 01:11:10,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:10,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,152 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:10,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:10,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-13 01:11:10,175 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:10,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-13 01:11:10,193 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:10,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:10,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:10,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:10,194 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:10,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:10,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:10,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2021-10-13 01:11:10,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:10,194 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:10,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,241 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:10,241 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:10,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,242 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:10,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:10,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:10,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:10,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:10,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:10,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:10,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:10,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-13 01:11:10,265 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:10,275 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:10,275 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:10,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,276 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-13 01:11:10,278 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:10,278 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:10,279 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:10,279 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2021-10-13 01:11:10,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:10,300 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:10,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:10,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:10,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:10,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:11:10,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:10,397 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:11:10,397 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:10,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 55 states and 74 transitions. Complement of second has 7 states. [2021-10-13 01:11:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-13 01:11:10,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-13 01:11:10,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:10,424 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:10,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:10,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:11:10,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:10,496 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:11:10,496 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:10,541 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 48 states and 64 transitions. Complement of second has 9 states. [2021-10-13 01:11:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-13 01:11:10,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-13 01:11:10,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:10,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2021-10-13 01:11:10,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:10,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-13 01:11:10,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:10,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-10-13 01:11:10,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-13 01:11:10,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2021-10-13 01:11:10,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-13 01:11:10,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-13 01:11:10,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2021-10-13 01:11:10,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:10,548 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-10-13 01:11:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2021-10-13 01:11:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-10-13 01:11:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-10-13 01:11:10,551 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-10-13 01:11:10,551 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-10-13 01:11:10,551 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-13 01:11:10,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2021-10-13 01:11:10,551 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-13 01:11:10,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:10,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:10,552 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2021-10-13 01:11:10,552 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-10-13 01:11:10,552 INFO L791 eck$LassoCheckResult]: Stem: 1230#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1231#L13-1 assume !!(main_~i~0 > 10); 1233#L10 assume !(25 == main_~i~0); 1234#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1223#L13-1 assume !!(main_~i~0 > 10); 1228#L10 assume !(25 == main_~i~0); 1250#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1246#L13-1 assume !!(main_~i~0 > 10); 1247#L10 assume !(25 == main_~i~0); 1245#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 assume !!(main_~i~0 > 10); 1244#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1236#L13-1 [2021-10-13 01:11:10,552 INFO L793 eck$LassoCheckResult]: Loop: 1236#L13-1 assume !!(main_~i~0 > 10); 1247#L10 assume !(25 == main_~i~0); 1245#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 assume !!(main_~i~0 > 10); 1244#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1236#L13-1 [2021-10-13 01:11:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:10,553 INFO L82 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2021-10-13 01:11:10,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:10,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368993076] [2021-10-13 01:11:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:10,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:10,573 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:10,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:10,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2021-10-13 01:11:10,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:10,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391061293] [2021-10-13 01:11:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:10,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:10,583 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:10,598 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2021-10-13 01:11:10,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:10,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844498510] [2021-10-13 01:11:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:10,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 01:11:10,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:11:10,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844498510] [2021-10-13 01:11:10,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844498510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:11:10,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6012296] [2021-10-13 01:11:10,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:11:10,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:11:10,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,631 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 01:11:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:10,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:11:10,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 01:11:10,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6012296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:11:10,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:11:10,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 01:11:10,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071488191] [2021-10-13 01:11:10,782 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:10,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:10,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:10,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:10,783 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:10,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:10,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:10,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2021-10-13 01:11:10,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:10,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:10,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:10,823 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:10,823 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:10,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,824 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-13 01:11:10,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:10,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:10,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:10,841 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:10,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:10,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,876 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:10,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:10,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-13 01:11:10,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:10,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:10,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:10,936 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:10,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:10,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:10,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-13 01:11:10,963 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:11,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:11,001 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:11,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:11,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:11,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:11,001 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:11,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:11,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:11,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:11,001 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2021-10-13 01:11:11,001 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:11,001 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:11,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:11,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:11,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:11,035 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:11,035 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:11,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:11,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:11,037 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:11,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:11,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:11,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:11,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:11,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:11,051 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:11,051 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:11,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-13 01:11:11,066 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:11,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:11,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:11,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:11,100 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:11,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-13 01:11:11,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:11,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:11,111 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:11,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:11,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:11,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:11,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:11,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:11,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:11,115 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:11,115 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:11,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:11,116 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:11,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-13 01:11:11,117 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:11,117 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:11,117 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:11,118 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2021-10-13 01:11:11,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:11,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:11,284 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:11:11,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,305 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 81 states and 107 transitions. Complement of second has 7 states. [2021-10-13 01:11:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-13 01:11:11,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-13 01:11:11,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:11,312 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:11,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-13 01:11:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:11,473 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:11:11,473 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,507 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 55 states and 74 transitions. Complement of second has 9 states. [2021-10-13 01:11:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-13 01:11:11,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-13 01:11:11,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:11,509 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:11,600 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 3 loop predicates [2021-10-13 01:11:11,600 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,623 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 141 transitions. Complement of second has 10 states. [2021-10-13 01:11:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-13 01:11:11,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-13 01:11:11,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:11,625 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:11,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:11,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:11:11,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:11,724 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 3 loop predicates [2021-10-13 01:11:11,725 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,761 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 76 states and 101 transitions. Complement of second has 11 states. [2021-10-13 01:11:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2021-10-13 01:11:11,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-13 01:11:11,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:11,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2021-10-13 01:11:11,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:11,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2021-10-13 01:11:11,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:11,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2021-10-13 01:11:11,764 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-13 01:11:11,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2021-10-13 01:11:11,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-13 01:11:11,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-13 01:11:11,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2021-10-13 01:11:11,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:11,766 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2021-10-13 01:11:11,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2021-10-13 01:11:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2021-10-13 01:11:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-13 01:11:11,768 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-13 01:11:11,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:11:11,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:11:11,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:11:11,769 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:11:11,794 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-10-13 01:11:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:11:11,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2021-10-13 01:11:11,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 01:11:11,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2021-10-13 01:11:11,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-13 01:11:11,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-13 01:11:11,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2021-10-13 01:11:11,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:11,798 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-10-13 01:11:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2021-10-13 01:11:11,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-10-13 01:11:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-10-13 01:11:11,803 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-13 01:11:11,803 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-13 01:11:11,803 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-13 01:11:11,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2021-10-13 01:11:11,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-13 01:11:11,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:11,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:11,804 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:11:11,804 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2021-10-13 01:11:11,804 INFO L791 eck$LassoCheckResult]: Stem: 1996#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1997#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1992#L13-1 [2021-10-13 01:11:11,804 INFO L793 eck$LassoCheckResult]: Loop: 1992#L13-1 assume !!(main_~i~0 > 10); 1993#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1988#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1989#L13-1 assume !!(main_~i~0 > 10); 1995#L10 assume !(25 == main_~i~0); 1990#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1991#L13-1 assume !!(main_~i~0 > 10); 2014#L10 assume !(25 == main_~i~0); 2013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1992#L13-1 [2021-10-13 01:11:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2021-10-13 01:11:11,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:11,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145041294] [2021-10-13 01:11:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:11,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:11,812 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:11,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:11,815 INFO L82 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2021-10-13 01:11:11,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:11,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437190861] [2021-10-13 01:11:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:11,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:11,833 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:11,837 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2021-10-13 01:11:11,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:11,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23363017] [2021-10-13 01:11:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:11,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:11,856 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:11,867 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:11,908 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:11,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:11,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:11,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:11,908 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:11,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:11,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:11,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:11,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2021-10-13 01:11:11,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:11,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:11,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:11,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:11,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:11,944 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:11,944 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:11,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:11,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:11,945 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:11,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:11,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:11,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-13 01:11:11,968 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:11,968 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:12,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:12,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:12,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:12,008 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:12,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:12,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:12,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-13 01:11:12,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:12,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:12,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:12,042 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:12,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-13 01:11:12,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:12,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:12,052 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:12,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-13 01:11:12,071 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:12,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:12,072 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:12,072 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:12,072 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:12,072 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:12,072 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:12,072 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:12,072 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2021-10-13 01:11:12,072 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:12,072 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:12,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:12,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:12,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:12,120 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:12,120 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:12,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:12,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:12,121 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:12,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-13 01:11:12,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:12,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:12,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:12,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:12,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:12,131 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:12,131 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:12,134 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:12,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:12,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:12,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:12,157 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:12,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-13 01:11:12,159 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:12,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:12,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:12,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:12,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:12,169 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:12,170 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:12,172 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:12,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-10-13 01:11:12,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:12,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:12,196 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:12,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-13 01:11:12,198 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:12,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:12,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:12,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:12,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:12,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:12,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:12,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:12,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:12,211 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:12,211 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:12,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:12,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:12,213 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:12,216 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:12,216 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:12,216 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:12,216 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] [2021-10-13 01:11:12,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-13 01:11:12,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-13 01:11:12,237 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:12,375 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-13 01:11:12,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,384 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 47 transitions. Complement of second has 5 states. [2021-10-13 01:11:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:12,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-13 01:11:12,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:12,387 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:12,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:12,496 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-13 01:11:12,496 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,516 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 40 states and 49 transitions. Complement of second has 7 states. [2021-10-13 01:11:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 01:11:12,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-13 01:11:12,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:12,519 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:12,633 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-13 01:11:12,633 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,641 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 49 transitions. Complement of second has 5 states. [2021-10-13 01:11:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-13 01:11:12,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-13 01:11:12,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:12,643 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:12,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:12,757 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 4 loop predicates [2021-10-13 01:11:12,757 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,818 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 51 transitions. Complement of second has 6 states. [2021-10-13 01:11:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-13 01:11:12,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-13 01:11:12,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:12,822 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:12,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:12,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:11:12,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:12,942 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-13 01:11:12,943 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,041 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 210 states and 292 transitions. Complement of second has 48 states 9 powerset states39 rank states. The highest rank that occured is 5 [2021-10-13 01:11:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-10-13 01:11:13,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-13 01:11:13,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:13,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2021-10-13 01:11:13,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:13,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2021-10-13 01:11:13,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:13,046 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2021-10-13 01:11:13,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-13 01:11:13,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2021-10-13 01:11:13,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-13 01:11:13,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-13 01:11:13,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2021-10-13 01:11:13,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:13,052 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2021-10-13 01:11:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2021-10-13 01:11:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2021-10-13 01:11:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2021-10-13 01:11:13,057 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2021-10-13 01:11:13,057 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2021-10-13 01:11:13,058 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-13 01:11:13,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2021-10-13 01:11:13,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 01:11:13,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:13,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:13,059 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:11:13,059 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2021-10-13 01:11:13,060 INFO L791 eck$LassoCheckResult]: Stem: 2691#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2693#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2685#L13-1 [2021-10-13 01:11:13,060 INFO L793 eck$LassoCheckResult]: Loop: 2685#L13-1 assume !!(main_~i~0 > 10); 2686#L10 assume 25 == main_~i~0;main_~i~0 := 30; 2741#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2739#L13-1 assume !!(main_~i~0 > 10); 2734#L10 assume !(25 == main_~i~0); 2732#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2727#L13-1 assume !!(main_~i~0 > 10); 2714#L10 assume !(25 == main_~i~0); 2726#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2725#L13-1 assume !!(main_~i~0 > 10); 2698#L10 assume !(25 == main_~i~0); 2689#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2685#L13-1 [2021-10-13 01:11:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2021-10-13 01:11:13,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:13,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10389868] [2021-10-13 01:11:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:13,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:13,067 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:13,069 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:13,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:13,070 INFO L82 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2021-10-13 01:11:13,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:13,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350996036] [2021-10-13 01:11:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:13,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:13,078 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:13,082 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:13,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2021-10-13 01:11:13,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:13,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760438258] [2021-10-13 01:11:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:13,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:13,091 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:13,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:13,140 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:13,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:13,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:13,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:13,140 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:13,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:13,141 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:13,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:13,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2021-10-13 01:11:13,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:13,141 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:13,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:13,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:13,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:13,178 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:13,178 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:13,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:13,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:13,184 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:13,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:13,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:13,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-13 01:11:13,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-10-13 01:11:13,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:13,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:13,252 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:13,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-13 01:11:13,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:13,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:13,263 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:13,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:13,283 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:13,283 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:13,283 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:13,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:13,283 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:13,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:13,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:13,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:13,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2021-10-13 01:11:13,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:13,283 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:13,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:13,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:13,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:13,318 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:13,318 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:13,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:13,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:13,319 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:13,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-13 01:11:13,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:13,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:13,328 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:13,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:13,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:13,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:13,329 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:13,329 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:13,343 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:13,345 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:13,345 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:13,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:13,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:13,354 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:13,356 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:13,356 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:13,356 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:13,357 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2021-10-13 01:11:13,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-13 01:11:13,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-13 01:11:13,390 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:13,558 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-13 01:11:13,558 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,569 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 129 transitions. Complement of second has 5 states. [2021-10-13 01:11:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 01:11:13,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-13 01:11:13,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:13,571 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:13,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:13,717 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-13 01:11:13,717 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,737 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 106 states and 135 transitions. Complement of second has 7 states. [2021-10-13 01:11:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 01:11:13,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-13 01:11:13,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:13,738 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:13,890 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 5 loop predicates [2021-10-13 01:11:13,890 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,905 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 95 states and 126 transitions. Complement of second has 5 states. [2021-10-13 01:11:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-13 01:11:13,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-13 01:11:13,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:13,906 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:11:13,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:14,046 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 5 loop predicates [2021-10-13 01:11:14,047 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:14,067 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 99 states and 128 transitions. Complement of second has 6 states. [2021-10-13 01:11:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-13 01:11:14,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-13 01:11:14,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:14,069 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:14,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:14,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:14,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:11:14,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:14,227 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-13 01:11:14,227 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:14,417 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1058 states and 1452 transitions. Complement of second has 131 states 20 powerset states111 rank states. The highest rank that occured is 5 [2021-10-13 01:11:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2021-10-13 01:11:14,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-13 01:11:14,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:14,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2021-10-13 01:11:14,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:14,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2021-10-13 01:11:14,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:14,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2021-10-13 01:11:14,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-13 01:11:14,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2021-10-13 01:11:14,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-13 01:11:14,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-13 01:11:14,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2021-10-13 01:11:14,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:14,442 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2021-10-13 01:11:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2021-10-13 01:11:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2021-10-13 01:11:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.5873015873015872) internal successors, (200), 125 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:14,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2021-10-13 01:11:14,471 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2021-10-13 01:11:14,471 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2021-10-13 01:11:14,471 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-13 01:11:14,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2021-10-13 01:11:14,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-10-13 01:11:14,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:14,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:14,475 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:11:14,475 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2021-10-13 01:11:14,475 INFO L791 eck$LassoCheckResult]: Stem: 4643#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4647#L13-1 assume !!(main_~i~0 > 10); 4668#L10 assume !(25 == main_~i~0); 4666#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4638#L13-1 [2021-10-13 01:11:14,475 INFO L793 eck$LassoCheckResult]: Loop: 4638#L13-1 assume !!(main_~i~0 > 10); 4641#L10 assume 25 == main_~i~0;main_~i~0 := 30; 4761#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4759#L13-1 assume !!(main_~i~0 > 10); 4757#L10 assume !(25 == main_~i~0); 4755#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4751#L13-1 assume !!(main_~i~0 > 10); 4748#L10 assume !(25 == main_~i~0); 4746#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4741#L13-1 assume !!(main_~i~0 > 10); 4654#L10 assume !(25 == main_~i~0); 4688#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4653#L13-1 assume !!(main_~i~0 > 10); 4652#L10 assume !(25 == main_~i~0); 4637#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4638#L13-1 [2021-10-13 01:11:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:14,476 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2021-10-13 01:11:14,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:14,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587961605] [2021-10-13 01:11:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:14,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:14,486 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:14,491 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:14,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:14,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2021-10-13 01:11:14,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:14,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213198701] [2021-10-13 01:11:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:14,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:14,502 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:14,514 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2021-10-13 01:11:14,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:14,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910145230] [2021-10-13 01:11:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:14,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:14,532 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:14,543 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:14,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:11:14 BoogieIcfgContainer [2021-10-13 01:11:14,634 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:11:14,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:11:14,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:11:14,635 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:11:14,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:04" (3/4) ... [2021-10-13 01:11:14,639 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-13 01:11:14,670 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:11:14,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:11:14,672 INFO L168 Benchmark]: Toolchain (without parser) took 10673.40 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 89.9 MB in the beginning and 140.3 MB in the end (delta: -50.4 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:14,672 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 75.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:11:14,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.12 ms. Allocated memory is still 119.5 MB. Free memory was 89.9 MB in the beginning and 95.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:14,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.36 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 93.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:11:14,674 INFO L168 Benchmark]: Boogie Preprocessor took 22.13 ms. Allocated memory is still 119.5 MB. Free memory was 93.9 MB in the beginning and 92.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:14,674 INFO L168 Benchmark]: RCFGBuilder took 292.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 85.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:14,675 INFO L168 Benchmark]: BuchiAutomizer took 9978.17 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 85.1 MB in the beginning and 142.4 MB in the end (delta: -57.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:14,675 INFO L168 Benchmark]: Witness Printer took 35.75 ms. Allocated memory is still 211.8 MB. Free memory was 142.4 MB in the beginning and 140.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:14,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 75.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.12 ms. Allocated memory is still 119.5 MB. Free memory was 89.9 MB in the beginning and 95.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.36 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 93.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.13 ms. Allocated memory is still 119.5 MB. Free memory was 93.9 MB in the beginning and 92.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 292.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 85.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9978.17 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 85.1 MB in the beginning and 142.4 MB in the end (delta: -57.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. * Witness Printer took 35.75 ms. Allocated memory is still 211.8 MB. Free memory was 142.4 MB in the beginning and 140.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (2 trivial, 5 deterministic, 5 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + 27 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 27 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 26 and consists of 6 locations. One nondeterministic module has affine ranking function 51 + -2 * i and consists of 8 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 126 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.9s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 5.6s. Construction of modules took 0.3s. Büchi inclusion checks took 3.6s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 79.4ms AutomataMinimizationTime, 12 MinimizatonAttempts, 200 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 126 states and ocurred in iteration 10. Nontrivial modules had stage [2, 3, 2, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/33 HoareTripleCheckerStatistics: 173 SDtfs, 244 SDslu, 6 SDs, 0 SdLazy, 346 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 302.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax208 hnf91 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf113 smp97 tf112 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 67ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fe3047d=0, \result=0, i=25} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 Loop: [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:11:14,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:14,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ad0066-caf8-47c7-9957-bd50a8fccd31/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...