./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 00:03:12,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:03:12,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:03:12,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:03:12,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:03:12,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:03:12,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:03:12,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:03:12,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:03:12,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:03:12,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:03:12,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:03:12,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:03:12,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:03:12,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:03:12,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:03:12,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:03:12,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:03:12,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:03:12,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:03:12,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:03:12,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:03:12,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:03:12,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:03:12,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:03:12,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:03:12,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:03:12,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:03:12,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:03:12,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:03:12,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:03:12,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:03:12,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:03:12,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:03:12,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:03:12,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:03:12,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:03:12,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:03:12,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:03:12,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:03:12,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:03:12,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-29 00:03:12,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:03:12,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:03:12,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:03:12,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:03:12,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:03:12,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:03:12,317 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:03:12,317 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-29 00:03:12,317 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-29 00:03:12,318 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-29 00:03:12,318 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-29 00:03:12,318 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-29 00:03:12,319 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-29 00:03:12,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:03:12,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 00:03:12,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:03:12,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:03:12,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-29 00:03:12,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-29 00:03:12,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-29 00:03:12,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:03:12,321 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-29 00:03:12,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:03:12,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-29 00:03:12,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:03:12,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:03:12,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:03:12,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:03:12,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:03:12,324 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-29 00:03:12,325 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_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 [2021-10-29 00:03:12,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:03:12,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:03:12,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:03:12,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:03:12,709 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:03:12,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-10-29 00:03:12,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/data/b06d56c7d/f6c76206ef4f4a6fa5a234d459d9af82/FLAG7c9cbe284 [2021-10-29 00:03:13,354 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:03:13,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-10-29 00:03:13,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/data/b06d56c7d/f6c76206ef4f4a6fa5a234d459d9af82/FLAG7c9cbe284 [2021-10-29 00:03:13,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/data/b06d56c7d/f6c76206ef4f4a6fa5a234d459d9af82 [2021-10-29 00:03:13,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:03:13,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:03:13,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:03:13,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:03:13,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:03:13,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:03:13" (1/1) ... [2021-10-29 00:03:13,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47db06f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:13, skipping insertion in model container [2021-10-29 00:03:13,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:03:13" (1/1) ... [2021-10-29 00:03:13,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:03:13,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:03:13,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:03:13,982 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:03:13,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:03:14,012 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:03:14,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14 WrapperNode [2021-10-29 00:03:14,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:03:14,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:03:14,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:03:14,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:03:14,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:03:14,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:03:14,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:03:14,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:03:14,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:03:14,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:03:14,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:03:14,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:03:14,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (1/1) ... [2021-10-29 00:03:14,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:14,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:14,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:14,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-29 00:03:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:03:14,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:03:14,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:03:14,409 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 00:03:14,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:03:14 BoogieIcfgContainer [2021-10-29 00:03:14,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:03:14,417 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-29 00:03:14,417 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-29 00:03:14,422 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-29 00:03:14,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-29 00:03:14,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.10 12:03:13" (1/3) ... [2021-10-29 00:03:14,425 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7924ca1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.10 12:03:14, skipping insertion in model container [2021-10-29 00:03:14,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-29 00:03:14,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:14" (2/3) ... [2021-10-29 00:03:14,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7924ca1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.10 12:03:14, skipping insertion in model container [2021-10-29 00:03:14,427 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-29 00:03:14,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:03:14" (3/3) ... [2021-10-29 00:03:14,429 INFO L389 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2021-10-29 00:03:14,514 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-29 00:03:14,515 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-29 00:03:14,515 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-29 00:03:14,515 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-29 00:03:14,515 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-29 00:03:14,516 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-29 00:03:14,516 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-29 00:03:14,516 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-29 00:03:14,532 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) [2021-10-29 00:03:14,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-29 00:03:14,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:14,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:14,568 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-29 00:03:14,569 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-29 00:03:14,569 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-29 00:03:14,569 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) [2021-10-29 00:03:14,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-29 00:03:14,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:14,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:14,572 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-29 00:03:14,572 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-29 00:03:14,582 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 [2021-10-29 00:03:14,584 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 [2021-10-29 00:03:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-29 00:03:14,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:14,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676876962] [2021-10-29 00:03:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:14,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:14,728 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:14,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2021-10-29 00:03:14,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:14,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314027236] [2021-10-29 00:03:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:14,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:14,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:14,830 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:14,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:14,832 INFO L85 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2021-10-29 00:03:14,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:14,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122365125] [2021-10-29 00:03:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:14,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:14,851 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:14,874 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:15,011 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:15,012 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:15,012 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:15,012 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:15,013 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:15,013 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,013 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:15,013 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:15,013 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-10-29 00:03:15,014 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:15,014 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:15,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:15,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:15,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:15,177 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:15,186 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:15,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:15,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:15,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:15,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:15,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-29 00:03:15,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:03:15,268 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: [] [2021-10-29 00:03:15,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:15,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:15,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:15,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-29 00:03:15,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:15,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:15,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:03:15,339 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: [] [2021-10-29 00:03:15,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:15,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:15,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:15,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-29 00:03:15,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:15,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:15,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:15,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:15,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:15,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:15,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:15,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-29 00:03:15,487 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:15,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:15,524 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:15,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:15,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:15,525 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:15,525 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:15,525 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,525 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:15,525 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:15,525 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-10-29 00:03:15,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:15,526 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:15,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:15,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:15,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:15,611 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:15,618 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:15,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:15,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:15,636 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 [2021-10-29 00:03:15,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:15,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:15,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:15,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:15,665 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:03:15,672 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:03:15,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-29 00:03:15,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:03:15,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:15,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:15,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:15,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-29 00:03:15,744 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-29 00:03:15,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:15,754 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:15,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:15,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:15,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:15,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:15,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:15,775 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:15,804 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:15,804 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:15,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:15,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:15,814 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:15,815 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:15,815 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:15,815 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2021-10-29 00:03:15,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-29 00:03:15,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:15,849 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:15,895 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:15,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:15,918 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:15,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:16,075 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 [2021-10-29 00:03:16,077 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) [2021-10-29 00:03:16,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-29 00:03:16,164 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. [2021-10-29 00:03:16,165 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 [2021-10-29 00:03:16,167 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) [2021-10-29 00:03:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-10-29 00:03:16,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-29 00:03:16,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:16,172 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:16,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:16,200 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:16,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:16,213 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:16,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:16,282 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 [2021-10-29 00:03:16,283 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) [2021-10-29 00:03:16,338 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. [2021-10-29 00:03:16,338 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 [2021-10-29 00:03:16,339 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) [2021-10-29 00:03:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-10-29 00:03:16,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-29 00:03:16,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:16,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-29 00:03:16,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:16,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-29 00:03:16,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:16,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2021-10-29 00:03:16,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-29 00:03:16,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2021-10-29 00:03:16,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-29 00:03:16,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-29 00:03:16,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2021-10-29 00:03:16,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:16,362 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2021-10-29 00:03:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2021-10-29 00:03:16,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-29 00:03:16,395 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) [2021-10-29 00:03:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2021-10-29 00:03:16,398 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-10-29 00:03:16,399 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-10-29 00:03:16,399 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-29 00:03:16,399 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2021-10-29 00:03:16,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-29 00:03:16,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:16,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:16,404 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-29 00:03:16,404 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-29 00:03:16,405 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 [2021-10-29 00:03:16,405 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 [2021-10-29 00:03:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-29 00:03:16,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:16,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614179479] [2021-10-29 00:03:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:16,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:16,418 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:16,423 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2021-10-29 00:03:16,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:16,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042483912] [2021-10-29 00:03:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:16,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:16,442 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:16,461 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:16,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2021-10-29 00:03:16,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:16,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485531082] [2021-10-29 00:03:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:16,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:16,482 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:16,494 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:16,535 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:16,535 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:16,535 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:16,535 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:16,536 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:16,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:16,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:16,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:16,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-10-29 00:03:16,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:16,537 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:16,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:16,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:16,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:16,610 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:16,610 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:16,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:16,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:16,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:16,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:16,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-29 00:03:16,645 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:03:16,645 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: [] [2021-10-29 00:03:16,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-29 00:03:16,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:16,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:16,694 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:16,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-29 00:03:16,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:16,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:16,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:03:16,723 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: [] [2021-10-29 00:03:16,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:16,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:16,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:16,751 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:16,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-29 00:03:16,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:16,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:16,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:16,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:16,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:16,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:16,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-29 00:03:16,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:16,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:16,831 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:16,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:16,878 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:16,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:16,878 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:16,878 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:16,878 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:16,878 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:16,878 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:16,878 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:16,879 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-10-29 00:03:16,879 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:16,879 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:16,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:16,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:16,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:16,941 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:16,941 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:16,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:16,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:16,943 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:16,956 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 [2021-10-29 00:03:16,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:16,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:16,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:16,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:16,972 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:03:16,972 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:03:16,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-29 00:03:16,995 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:03:17,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:17,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,042 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,047 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 [2021-10-29 00:03:17,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-29 00:03:17,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:17,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:17,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:17,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:17,065 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:03:17,065 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:03:17,081 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:03:17,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:17,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,127 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,134 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 [2021-10-29 00:03:17,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:17,146 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:17,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:17,146 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:17,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:17,152 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:17,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:17,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-29 00:03:17,171 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:17,174 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:17,174 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:17,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,186 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:17,186 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:17,187 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:17,187 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2021-10-29 00:03:17,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-29 00:03:17,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:17,241 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:17,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:17,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:17,286 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:17,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:17,334 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 [2021-10-29 00:03:17,335 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) [2021-10-29 00:03:17,366 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. [2021-10-29 00:03:17,368 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 [2021-10-29 00:03:17,368 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) [2021-10-29 00:03:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-29 00:03:17,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-29 00:03:17,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:17,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-29 00:03:17,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:17,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-29 00:03:17,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:17,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2021-10-29 00:03:17,372 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-29 00:03:17,373 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2021-10-29 00:03:17,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-29 00:03:17,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-10-29 00:03:17,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2021-10-29 00:03:17,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:17,374 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2021-10-29 00:03:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2021-10-29 00:03:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-29 00:03:17,377 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) [2021-10-29 00:03:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2021-10-29 00:03:17,378 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-10-29 00:03:17,378 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-10-29 00:03:17,378 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-29 00:03:17,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2021-10-29 00:03:17,379 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-29 00:03:17,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:17,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:17,380 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-29 00:03:17,380 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-29 00:03:17,380 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 [2021-10-29 00:03:17,380 INFO L793 eck$LassoCheckResult]: Loop: 193#L13-1 assume !!(main_~i~0 > 10); 194#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 193#L13-1 [2021-10-29 00:03:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2021-10-29 00:03:17,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:17,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573740721] [2021-10-29 00:03:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:17,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:17,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:03:17,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573740721] [2021-10-29 00:03:17,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573740721] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:17,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:17,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 00:03:17,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381670576] [2021-10-29 00:03:17,432 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:03:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2021-10-29 00:03:17,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:17,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84348149] [2021-10-29 00:03:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:17,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:17,456 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:17,463 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:17,497 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:17,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:17,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:17,498 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:17,498 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:17,498 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:17,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:17,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-10-29 00:03:17,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:17,500 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:17,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:17,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:17,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:17,556 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:17,557 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:17,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,563 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:17,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:17,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-29 00:03:17,593 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:03:17,593 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: [] [2021-10-29 00:03:17,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:17,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,638 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-29 00:03:17,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:17,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:17,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:17,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,716 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-29 00:03:17,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:17,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:17,735 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:17,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:17,760 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:17,760 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:17,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:17,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:17,761 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:17,761 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,761 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:17,761 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:17,761 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-10-29 00:03:17,761 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:17,761 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:17,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:17,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:17,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:17,866 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:17,866 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:17,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,879 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:17,916 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 [2021-10-29 00:03:17,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:17,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:17,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:17,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:17,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:17,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:17,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:17,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-29 00:03:17,951 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:17,954 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:17,954 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:17,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:17,955 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:17,962 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:17,962 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:17,962 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:17,962 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2021-10-29 00:03:17,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-29 00:03:18,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:18,012 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:18,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:18,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:18,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:18,057 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:18,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:18,114 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 [2021-10-29 00:03:18,115 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) [2021-10-29 00:03:18,151 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. [2021-10-29 00:03:18,152 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 [2021-10-29 00:03:18,152 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) [2021-10-29 00:03:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:18,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-29 00:03:18,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:18,155 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:18,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:18,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:18,194 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:18,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:18,231 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 [2021-10-29 00:03:18,232 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) [2021-10-29 00:03:18,272 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. [2021-10-29 00:03:18,272 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 [2021-10-29 00:03:18,273 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) [2021-10-29 00:03:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-29 00:03:18,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-29 00:03:18,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:18,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-29 00:03:18,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:18,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-29 00:03:18,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:18,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2021-10-29 00:03:18,284 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-10-29 00:03:18,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2021-10-29 00:03:18,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-29 00:03:18,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-10-29 00:03:18,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2021-10-29 00:03:18,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:18,288 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2021-10-29 00:03:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2021-10-29 00:03:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-10-29 00:03:18,298 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) [2021-10-29 00:03:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2021-10-29 00:03:18,302 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2021-10-29 00:03:18,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:03:18,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:03:18,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:03:18,307 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) [2021-10-29 00:03:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:18,329 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-29 00:03:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:03:18,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2021-10-29 00:03:18,332 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-29 00:03:18,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2021-10-29 00:03:18,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-29 00:03:18,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-29 00:03:18,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2021-10-29 00:03:18,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:18,334 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-10-29 00:03:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2021-10-29 00:03:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-29 00:03:18,341 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) [2021-10-29 00:03:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2021-10-29 00:03:18,341 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-10-29 00:03:18,342 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-10-29 00:03:18,342 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-29 00:03:18,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2021-10-29 00:03:18,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-29 00:03:18,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:18,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:18,346 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2021-10-29 00:03:18,346 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-29 00:03:18,347 INFO L791 eck$LassoCheckResult]: Stem: 444#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 445#L13-1 assume !!(main_~i~0 > 10); 450#L10 assume !(25 == main_~i~0); 451#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 446#L10 assume !(25 == main_~i~0); 441#L10-2 [2021-10-29 00:03:18,347 INFO L793 eck$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 [2021-10-29 00:03:18,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2021-10-29 00:03:18,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:18,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048623814] [2021-10-29 00:03:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:18,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:18,374 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:18,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2021-10-29 00:03:18,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:18,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5837944] [2021-10-29 00:03:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:18,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:18,412 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:18,416 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2021-10-29 00:03:18,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:18,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096905251] [2021-10-29 00:03:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:18,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:18,425 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:18,439 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:18,463 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:18,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:18,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:18,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:18,464 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:18,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:18,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:18,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:18,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2021-10-29 00:03:18,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:18,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:18,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:18,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:18,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:18,510 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:18,510 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:18,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:18,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:18,511 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:18,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:18,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:18,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-29 00:03:18,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:18,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:18,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:18,594 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:18,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:18,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:18,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-29 00:03:18,631 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:18,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:18,672 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:18,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:18,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:18,672 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:18,672 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:18,672 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:18,672 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:18,672 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:18,672 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2021-10-29 00:03:18,672 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:18,673 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:18,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:18,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:18,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:18,748 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:18,749 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:18,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:18,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:18,751 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:18,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-29 00:03:18,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:18,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:18,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:18,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:18,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:18,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-29 00:03:18,772 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:18,772 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:18,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:18,802 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:18,803 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:18,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:18,804 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:18,812 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:18,812 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:18,812 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:18,813 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2021-10-29 00:03:18,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-29 00:03:18,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:18,859 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:18,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:18,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:18,930 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:18,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:18,953 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 [2021-10-29 00:03:18,953 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) [2021-10-29 00:03:18,986 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. [2021-10-29 00:03:18,987 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 [2021-10-29 00:03:18,987 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) [2021-10-29 00:03:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:18,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-29 00:03:18,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:18,989 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:19,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:19,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:19,040 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:19,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:19,072 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 [2021-10-29 00:03:19,073 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) [2021-10-29 00:03:19,098 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. [2021-10-29 00:03:19,098 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 [2021-10-29 00:03:19,099 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) [2021-10-29 00:03:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:19,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-29 00:03:19,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:19,100 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:19,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:19,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:19,149 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:03:19,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:19,175 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 [2021-10-29 00:03:19,176 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) [2021-10-29 00:03:19,201 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. [2021-10-29 00:03:19,202 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 [2021-10-29 00:03:19,203 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) [2021-10-29 00:03:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-10-29 00:03:19,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-29 00:03:19,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:19,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2021-10-29 00:03:19,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:19,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2021-10-29 00:03:19,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:19,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2021-10-29 00:03:19,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-29 00:03:19,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2021-10-29 00:03:19,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-29 00:03:19,208 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-29 00:03:19,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2021-10-29 00:03:19,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:19,209 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2021-10-29 00:03:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2021-10-29 00:03:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2021-10-29 00:03:19,211 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) [2021-10-29 00:03:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-10-29 00:03:19,212 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-29 00:03:19,212 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-29 00:03:19,212 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-29 00:03:19,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-10-29 00:03:19,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-29 00:03:19,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:19,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:19,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-29 00:03:19,214 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-29 00:03:19,214 INFO L791 eck$LassoCheckResult]: Stem: 667#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 668#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 662#L13-1 [2021-10-29 00:03:19,214 INFO L793 eck$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 [2021-10-29 00:03:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2021-10-29 00:03:19,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:19,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568799894] [2021-10-29 00:03:19,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:19,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:19,222 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:19,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2021-10-29 00:03:19,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:19,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751030233] [2021-10-29 00:03:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:19,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:19,234 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:19,238 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2021-10-29 00:03:19,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:19,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922229538] [2021-10-29 00:03:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:19,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:19,246 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:19,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:19,278 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:19,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:19,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:19,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:19,279 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:19,279 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:19,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:19,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:19,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-10-29 00:03:19,280 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:19,280 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:19,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:19,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:19,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:19,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:19,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:19,466 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:19,467 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:19,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:19,471 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:19,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:19,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:19,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-29 00:03:19,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:19,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:19,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:19,531 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:19,541 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:19,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:19,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-29 00:03:19,603 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:19,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-29 00:03:19,610 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:19,610 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:19,610 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:19,611 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:19,611 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:19,611 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:19,611 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:19,611 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:19,611 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-10-29 00:03:19,611 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:19,611 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:19,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:19,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:19,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:19,728 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:19,728 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:19,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:19,729 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:19,738 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 [2021-10-29 00:03:19,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-29 00:03:19,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:19,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:19,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:19,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:19,753 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:03:19,753 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:03:19,764 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:03:19,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:19,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:19,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:19,813 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:19,819 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 [2021-10-29 00:03:19,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:19,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:19,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:19,832 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-29 00:03:19,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:19,836 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-29 00:03:19,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:19,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-29 00:03:19,851 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:19,854 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-29 00:03:19,854 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:19,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:19,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:19,856 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:19,864 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:19,864 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:19,864 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:19,864 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:03:19,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-29 00:03:19,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-29 00:03:19,895 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:19,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:19,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:19,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:19,937 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:03:19,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:19,985 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 [2021-10-29 00:03:19,985 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) [2021-10-29 00:03:20,000 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. [2021-10-29 00:03:20,001 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 [2021-10-29 00:03:20,001 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) [2021-10-29 00:03:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:20,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-29 00:03:20,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-29 00:03:20,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-29 00:03:20,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2021-10-29 00:03:20,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-29 00:03:20,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2021-10-29 00:03:20,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-29 00:03:20,006 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-29 00:03:20,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2021-10-29 00:03:20,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:20,006 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-10-29 00:03:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2021-10-29 00:03:20,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-10-29 00:03:20,009 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) [2021-10-29 00:03:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2021-10-29 00:03:20,010 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-10-29 00:03:20,010 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-10-29 00:03:20,010 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-29 00:03:20,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2021-10-29 00:03:20,011 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-29 00:03:20,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:20,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:20,012 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-10-29 00:03:20,012 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-29 00:03:20,012 INFO L791 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 758#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 752#L13-1 assume !!(main_~i~0 > 10); 753#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2021-10-29 00:03:20,012 INFO L793 eck$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 [2021-10-29 00:03:20,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2021-10-29 00:03:20,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:20,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013888652] [2021-10-29 00:03:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:20,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,021 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,027 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2021-10-29 00:03:20,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:20,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900147992] [2021-10-29 00:03:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:20,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,033 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,037 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2021-10-29 00:03:20,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:20,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305417866] [2021-10-29 00:03:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:20,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,046 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,054 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:20,078 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:20,078 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:20,078 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:20,078 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:20,078 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:20,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:20,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:20,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:20,079 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2021-10-29 00:03:20,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:20,079 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:20,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:20,171 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:20,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:20,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:20,172 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:20,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:20,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:20,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-29 00:03:20,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:20,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:20,216 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:20,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:20,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:20,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-29 00:03:20,311 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:20,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:20,320 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:20,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:20,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:20,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:20,320 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:20,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:20,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:20,321 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:20,321 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2021-10-29 00:03:20,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:20,321 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:20,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,424 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:20,424 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:20,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:20,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:20,425 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:20,428 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 [2021-10-29 00:03:20,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:20,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:20,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:20,439 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-29 00:03:20,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:20,442 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-29 00:03:20,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:20,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-29 00:03:20,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:20,460 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:20,460 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:03:20,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:20,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:20,462 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:20,468 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:20,468 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:20,468 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:20,468 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:03:20,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-29 00:03:20,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:20,515 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:20,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:20,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:20,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:20,575 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:03:20,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:20,604 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 [2021-10-29 00:03:20,604 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) [2021-10-29 00:03:20,619 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. [2021-10-29 00:03:20,620 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 [2021-10-29 00:03:20,620 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) [2021-10-29 00:03:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:20,620 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-29 00:03:20,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,621 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:20,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:20,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:20,660 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:03:20,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:20,691 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 [2021-10-29 00:03:20,692 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) [2021-10-29 00:03:20,703 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. [2021-10-29 00:03:20,704 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 [2021-10-29 00:03:20,704 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) [2021-10-29 00:03:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:20,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-29 00:03:20,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,705 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:20,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:20,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:20,749 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:03:20,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:20,778 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 [2021-10-29 00:03:20,778 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) [2021-10-29 00:03:20,791 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. [2021-10-29 00:03:20,793 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 [2021-10-29 00:03:20,794 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) [2021-10-29 00:03:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-29 00:03:20,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-29 00:03:20,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2021-10-29 00:03:20,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2021-10-29 00:03:20,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:20,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2021-10-29 00:03:20,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-29 00:03:20,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2021-10-29 00:03:20,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-29 00:03:20,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-29 00:03:20,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2021-10-29 00:03:20,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:20,798 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-10-29 00:03:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2021-10-29 00:03:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-10-29 00:03:20,800 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) [2021-10-29 00:03:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-10-29 00:03:20,801 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-29 00:03:20,801 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-29 00:03:20,801 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-29 00:03:20,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-10-29 00:03:20,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-29 00:03:20,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:20,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:20,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-29 00:03:20,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-10-29 00:03:20,802 INFO L791 eck$LassoCheckResult]: Stem: 1009#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1010#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1003#L13-1 [2021-10-29 00:03:20,802 INFO L793 eck$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 [2021-10-29 00:03:20,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,803 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2021-10-29 00:03:20,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:20,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191515148] [2021-10-29 00:03:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:20,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,808 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,812 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2021-10-29 00:03:20,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:20,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291081063] [2021-10-29 00:03:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:20,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,818 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,823 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2021-10-29 00:03:20,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:20,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910902390] [2021-10-29 00:03:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:20,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,831 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:20,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:20,925 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:20,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:20,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:20,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:20,926 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:20,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:20,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:20,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:20,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2021-10-29 00:03:20,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:20,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:20,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:20,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:20,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:21,002 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:21,002 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:21,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,014 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:21,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:21,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:21,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-29 00:03:21,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:21,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,080 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:21,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:21,104 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:21,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-29 00:03:21,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-29 00:03:21,130 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:21,130 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:21,130 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:21,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:21,130 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:21,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:21,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:21,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2021-10-29 00:03:21,131 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:21,131 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:21,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:21,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:21,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:21,183 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:21,183 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:21,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,191 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,193 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 [2021-10-29 00:03:21,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-29 00:03:21,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:21,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:21,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:21,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:21,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:21,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:21,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:21,211 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:21,213 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:21,213 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:21,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,214 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,216 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:21,216 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:21,216 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:21,216 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2021-10-29 00:03:21,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-29 00:03:21,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:21,242 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:21,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:21,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:21,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:03:21,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:21,362 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 [2021-10-29 00:03:21,363 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) [2021-10-29 00:03:21,392 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. [2021-10-29 00:03:21,392 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 [2021-10-29 00:03:21,393 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) [2021-10-29 00:03:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-29 00:03:21,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-29 00:03:21,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:21,394 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:21,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:21,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:03:21,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:21,496 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 [2021-10-29 00:03:21,497 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) [2021-10-29 00:03:21,539 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. [2021-10-29 00:03:21,541 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 [2021-10-29 00:03:21,542 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) [2021-10-29 00:03:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-29 00:03:21,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-29 00:03:21,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:21,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2021-10-29 00:03:21,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:21,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-29 00:03:21,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:21,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-10-29 00:03:21,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-29 00:03:21,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2021-10-29 00:03:21,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-29 00:03:21,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-29 00:03:21,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2021-10-29 00:03:21,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:21,547 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-10-29 00:03:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2021-10-29 00:03:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-10-29 00:03:21,550 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) [2021-10-29 00:03:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-10-29 00:03:21,551 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-10-29 00:03:21,551 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-10-29 00:03:21,551 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-29 00:03:21,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2021-10-29 00:03:21,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-29 00:03:21,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:21,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:21,553 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2021-10-29 00:03:21,553 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-10-29 00:03:21,554 INFO L791 eck$LassoCheckResult]: Stem: 1230#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1231#L13-1 assume !!(main_~i~0 > 10); 1233#L10 assume !(25 == main_~i~0); 1234#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1223#L13-1 assume !!(main_~i~0 > 10); 1228#L10 assume !(25 == main_~i~0); 1250#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1246#L13-1 assume !!(main_~i~0 > 10); 1247#L10 assume !(25 == main_~i~0); 1245#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 assume !!(main_~i~0 > 10); 1244#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1236#L13-1 [2021-10-29 00:03:21,554 INFO L793 eck$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 [2021-10-29 00:03:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2021-10-29 00:03:21,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:21,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336325168] [2021-10-29 00:03:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:21,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:21,563 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:21,570 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:21,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2021-10-29 00:03:21,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:21,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391140690] [2021-10-29 00:03:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:21,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:21,577 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:21,582 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2021-10-29 00:03:21,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:21,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549986332] [2021-10-29 00:03:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:21,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-29 00:03:21,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:03:21,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549986332] [2021-10-29 00:03:21,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549986332] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:03:21,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117118606] [2021-10-29 00:03:21,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 00:03:21,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:03:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,625 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-29 00:03:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:21,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:03:21,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-29 00:03:21,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117118606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:03:21,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:03:21,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-29 00:03:21,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368708392] [2021-10-29 00:03:21,787 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:21,787 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:21,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:21,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:21,788 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:21,788 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,788 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:21,788 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:21,788 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2021-10-29 00:03:21,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:21,789 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:21,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:21,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:21,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:21,832 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:21,832 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:21,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,835 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:21,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:21,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-29 00:03:21,869 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:03:21,869 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: [] [2021-10-29 00:03:21,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-10-29 00:03:21,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,898 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-29 00:03:21,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:21,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:21,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-29 00:03:21,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:21,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:21,974 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:21,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-29 00:03:21,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:21,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:21,988 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:22,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-10-29 00:03:22,012 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:22,012 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:22,012 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:22,012 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:22,012 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:22,012 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:22,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:22,013 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:22,013 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2021-10-29 00:03:22,013 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:22,013 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:22,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:22,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:22,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:22,067 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:22,068 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:22,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:22,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:22,070 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:22,079 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 [2021-10-29 00:03:22,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:22,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:22,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:22,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:22,094 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:03:22,094 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:03:22,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-29 00:03:22,107 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:03:22,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:22,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:22,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:22,149 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:22,156 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 [2021-10-29 00:03:22,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:22,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:22,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:22,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:22,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:22,168 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:22,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:22,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-29 00:03:22,180 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:22,192 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:22,192 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:22,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:22,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:22,195 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:22,196 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:22,196 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:22,196 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:22,197 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2021-10-29 00:03:22,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-29 00:03:22,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:22,237 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:22,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:22,395 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 [2021-10-29 00:03:22,395 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) [2021-10-29 00:03:22,420 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. [2021-10-29 00:03:22,421 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 [2021-10-29 00:03:22,421 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) [2021-10-29 00:03:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-29 00:03:22,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-29 00:03:22,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:22,422 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:22,607 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 [2021-10-29 00:03:22,608 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) [2021-10-29 00:03:22,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:22,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:22,671 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. [2021-10-29 00:03:22,671 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 [2021-10-29 00:03:22,672 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) [2021-10-29 00:03:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-10-29 00:03:22,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-29 00:03:22,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:22,673 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:22,807 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 [2021-10-29 00:03:22,807 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) [2021-10-29 00:03:22,837 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. [2021-10-29 00:03:22,838 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 [2021-10-29 00:03:22,838 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) [2021-10-29 00:03:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-29 00:03:22,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-29 00:03:22,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:22,839 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:22,974 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 [2021-10-29 00:03:22,974 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) [2021-10-29 00:03:23,028 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. [2021-10-29 00:03:23,029 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 [2021-10-29 00:03:23,029 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) [2021-10-29 00:03:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2021-10-29 00:03:23,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2021-10-29 00:03:23,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:23,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2021-10-29 00:03:23,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:23,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2021-10-29 00:03:23,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:23,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2021-10-29 00:03:23,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-29 00:03:23,037 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2021-10-29 00:03:23,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-29 00:03:23,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-29 00:03:23,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2021-10-29 00:03:23,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:23,039 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2021-10-29 00:03:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2021-10-29 00:03:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2021-10-29 00:03:23,045 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) [2021-10-29 00:03:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-29 00:03:23,048 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-29 00:03:23,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:03:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:03:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:03:23,049 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) [2021-10-29 00:03:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:23,080 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-10-29 00:03:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:03:23,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2021-10-29 00:03:23,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-29 00:03:23,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2021-10-29 00:03:23,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-29 00:03:23,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-29 00:03:23,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2021-10-29 00:03:23,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:23,086 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-10-29 00:03:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2021-10-29 00:03:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-10-29 00:03:23,099 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) [2021-10-29 00:03:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-10-29 00:03:23,100 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-29 00:03:23,100 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-10-29 00:03:23,100 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-29 00:03:23,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2021-10-29 00:03:23,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-29 00:03:23,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:23,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:23,102 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-29 00:03:23,102 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2021-10-29 00:03:23,102 INFO L791 eck$LassoCheckResult]: Stem: 1996#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1997#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1992#L13-1 [2021-10-29 00:03:23,103 INFO L793 eck$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 [2021-10-29 00:03:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2021-10-29 00:03:23,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:23,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501463425] [2021-10-29 00:03:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:23,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:23,118 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:23,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2021-10-29 00:03:23,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:23,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101637931] [2021-10-29 00:03:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:23,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:23,149 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:23,153 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2021-10-29 00:03:23,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:23,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401357425] [2021-10-29 00:03:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:23,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:23,161 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:23,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:23,231 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:23,231 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:23,231 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:23,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:23,232 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:23,232 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,232 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:23,232 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:23,232 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2021-10-29 00:03:23,232 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:23,233 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:23,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:23,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:23,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:23,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:23,276 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:23,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:23,279 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:23,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:23,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-29 00:03:23,309 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:03:23,309 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: [] [2021-10-29 00:03:23,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:23,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:23,353 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:23,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:23,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-29 00:03:23,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:23,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:23,400 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:23,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:23,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-29 00:03:23,431 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:23,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:23,472 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:23,472 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:23,472 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:23,472 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:23,472 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:23,472 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,472 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:23,472 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:23,472 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2021-10-29 00:03:23,472 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:23,473 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:23,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:23,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:23,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:23,517 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:23,517 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:23,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:23,518 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-29 00:03:23,520 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 [2021-10-29 00:03:23,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:23,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:23,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:23,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:23,531 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:03:23,531 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:03:23,539 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:03:23,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-29 00:03:23,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:23,565 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-29 00:03:23,567 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 [2021-10-29 00:03:23,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:23,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:23,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:23,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:23,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:03:23,578 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:03:23,603 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:03:23,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:23,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:23,647 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,649 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 [2021-10-29 00:03:23,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-29 00:03:23,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:23,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:23,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:23,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:23,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:23,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:23,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:23,672 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:23,675 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:23,675 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:23,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:23,677 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-29 00:03:23,679 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:23,679 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:23,679 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:23,679 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] [2021-10-29 00:03:23,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-29 00:03:23,704 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:23,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:23,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:23,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:03:23,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:23,876 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 [2021-10-29 00:03:23,876 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) [2021-10-29 00:03:23,887 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. [2021-10-29 00:03:23,888 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 [2021-10-29 00:03:23,888 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) [2021-10-29 00:03:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:23,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-29 00:03:23,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:23,889 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:23,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:23,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:23,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:03:23,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:24,049 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 [2021-10-29 00:03:24,050 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) [2021-10-29 00:03:24,076 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. [2021-10-29 00:03:24,077 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 [2021-10-29 00:03:24,077 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) [2021-10-29 00:03:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-29 00:03:24,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-29 00:03:24,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:24,080 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:24,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:24,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:24,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:03:24,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:24,273 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 [2021-10-29 00:03:24,274 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) [2021-10-29 00:03:24,286 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. [2021-10-29 00:03:24,286 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 [2021-10-29 00:03:24,287 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) [2021-10-29 00:03:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-29 00:03:24,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-29 00:03:24,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:24,288 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:24,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:24,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:03:24,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:24,448 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 [2021-10-29 00:03:24,449 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) [2021-10-29 00:03:24,469 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. [2021-10-29 00:03:24,470 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 [2021-10-29 00:03:24,470 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) [2021-10-29 00:03:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-29 00:03:24,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-29 00:03:24,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:24,471 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:24,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:24,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:24,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:24,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:03:24,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:24,612 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 [2021-10-29 00:03:24,613 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) [2021-10-29 00:03:24,742 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 [2021-10-29 00:03:24,742 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 [2021-10-29 00:03:24,743 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) [2021-10-29 00:03:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-10-29 00:03:24,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2021-10-29 00:03:24,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:24,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2021-10-29 00:03:24,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:24,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2021-10-29 00:03:24,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:24,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2021-10-29 00:03:24,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-29 00:03:24,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2021-10-29 00:03:24,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-29 00:03:24,759 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-29 00:03:24,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2021-10-29 00:03:24,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:24,759 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2021-10-29 00:03:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2021-10-29 00:03:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2021-10-29 00:03:24,775 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) [2021-10-29 00:03:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2021-10-29 00:03:24,776 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2021-10-29 00:03:24,776 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2021-10-29 00:03:24,776 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-29 00:03:24,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2021-10-29 00:03:24,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-29 00:03:24,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:24,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:24,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-29 00:03:24,779 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2021-10-29 00:03:24,779 INFO L791 eck$LassoCheckResult]: Stem: 2691#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2693#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2685#L13-1 [2021-10-29 00:03:24,780 INFO L793 eck$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 [2021-10-29 00:03:24,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:24,780 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2021-10-29 00:03:24,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:24,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156217915] [2021-10-29 00:03:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:24,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:24,794 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:24,802 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2021-10-29 00:03:24,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:24,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090862137] [2021-10-29 00:03:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:24,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:24,821 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:24,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2021-10-29 00:03:24,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:24,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108938605] [2021-10-29 00:03:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:24,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:24,855 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:24,861 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:24,906 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:24,906 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:24,907 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:24,907 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:24,907 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:03:24,907 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:24,907 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:24,907 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:24,907 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2021-10-29 00:03:24,908 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:24,908 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:24,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:24,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:24,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:24,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:24,949 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:03:24,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:24,955 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:24,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:03:24,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:24,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-29 00:03:25,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:25,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:25,016 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:25,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:03:25,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:03:25,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-29 00:03:25,055 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:03:25,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:25,097 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:03:25,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:03:25,097 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:03:25,097 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:03:25,097 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:03:25,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:25,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:03:25,098 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:03:25,098 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2021-10-29 00:03:25,098 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:03:25,098 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:03:25,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:25,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:25,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:03:25,152 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:03:25,152 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:03:25,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:25,154 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:25,156 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 [2021-10-29 00:03:25,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:03:25,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:03:25,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:03:25,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:03:25,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:03:25,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:03:25,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:03:25,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-29 00:03:25,188 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:03:25,191 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:03:25,191 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:03:25,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:03:25,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:03:25,193 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:03:25,195 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:03:25,195 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:03:25,195 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:03:25,196 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2021-10-29 00:03:25,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-29 00:03:25,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:25,224 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:03:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:25,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:25,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:25,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:03:25,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:25,436 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 [2021-10-29 00:03:25,437 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) [2021-10-29 00:03:25,450 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. [2021-10-29 00:03:25,451 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 [2021-10-29 00:03:25,451 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) [2021-10-29 00:03:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-29 00:03:25,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-29 00:03:25,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:25,452 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:25,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:25,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:25,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:03:25,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:25,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:25,727 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 [2021-10-29 00:03:25,727 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) [2021-10-29 00:03:25,752 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. [2021-10-29 00:03:25,753 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 [2021-10-29 00:03:25,753 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) [2021-10-29 00:03:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-29 00:03:25,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-29 00:03:25,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:25,754 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:25,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:25,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:25,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:03:25,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:25,959 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 [2021-10-29 00:03:25,960 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) [2021-10-29 00:03:25,975 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. [2021-10-29 00:03:25,975 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 [2021-10-29 00:03:25,976 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) [2021-10-29 00:03:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-29 00:03:25,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-29 00:03:25,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:25,977 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:25,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:25,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:26,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:03:26,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:26,150 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 [2021-10-29 00:03:26,150 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) [2021-10-29 00:03:26,179 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. [2021-10-29 00:03:26,179 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 [2021-10-29 00:03:26,181 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) [2021-10-29 00:03:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-29 00:03:26,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-29 00:03:26,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:26,182 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:03:26,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:26,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:03:26,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:26,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:03:26,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:26,382 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 [2021-10-29 00:03:26,382 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) [2021-10-29 00:03:26,605 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 [2021-10-29 00:03:26,605 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 [2021-10-29 00:03:26,606 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) [2021-10-29 00:03:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2021-10-29 00:03:26,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2021-10-29 00:03:26,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:26,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2021-10-29 00:03:26,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:26,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2021-10-29 00:03:26,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:03:26,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2021-10-29 00:03:26,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-29 00:03:26,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2021-10-29 00:03:26,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-29 00:03:26,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-29 00:03:26,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2021-10-29 00:03:26,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:03:26,645 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2021-10-29 00:03:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2021-10-29 00:03:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2021-10-29 00:03:26,670 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) [2021-10-29 00:03:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2021-10-29 00:03:26,672 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2021-10-29 00:03:26,672 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2021-10-29 00:03:26,672 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-29 00:03:26,672 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2021-10-29 00:03:26,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-10-29 00:03:26,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:03:26,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:03:26,675 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-29 00:03:26,675 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2021-10-29 00:03:26,675 INFO L791 eck$LassoCheckResult]: Stem: 4643#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4647#L13-1 assume !!(main_~i~0 > 10); 4668#L10 assume !(25 == main_~i~0); 4666#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4638#L13-1 [2021-10-29 00:03:26,676 INFO L793 eck$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 [2021-10-29 00:03:26,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:26,676 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2021-10-29 00:03:26,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:26,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120212292] [2021-10-29 00:03:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:26,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:26,685 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:26,698 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:26,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:26,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2021-10-29 00:03:26,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:26,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757379696] [2021-10-29 00:03:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:26,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:26,720 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:26,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:26,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2021-10-29 00:03:26,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:03:26,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813982078] [2021-10-29 00:03:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:26,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:03:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:26,760 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:26,775 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:03:26,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.10 12:03:26 BoogieIcfgContainer [2021-10-29 00:03:26,900 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-29 00:03:26,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:03:26,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:03:26,902 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:03:26,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:03:14" (3/4) ... [2021-10-29 00:03:26,906 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-29 00:03:26,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-29 00:03:26,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:03:26,958 INFO L168 Benchmark]: Toolchain (without parser) took 13235.45 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 76.3 MB in the beginning and 93.3 MB in the end (delta: -17.0 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:26,959 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 113.2 MB. Free memory is still 92.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:03:26,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.40 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 89.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:26,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 113.2 MB. Free memory was 89.8 MB in the beginning and 88.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:03:26,961 INFO L168 Benchmark]: Boogie Preprocessor took 30.67 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 87.7 MB in the end (delta: 663.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:26,962 INFO L168 Benchmark]: RCFGBuilder took 332.13 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 79.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:26,963 INFO L168 Benchmark]: BuchiAutomizer took 12483.48 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 79.3 MB in the beginning and 95.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:26,964 INFO L168 Benchmark]: Witness Printer took 55.80 ms. Allocated memory is still 163.6 MB. Free memory was 95.4 MB in the beginning and 93.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:26,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 113.2 MB. Free memory is still 92.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.40 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 89.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 113.2 MB. Free memory was 89.8 MB in the beginning and 88.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.67 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 87.7 MB in the end (delta: 663.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 332.13 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 79.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 12483.48 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 79.3 MB in the beginning and 95.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Witness Printer took 55.80 ms. Allocated memory is still 163.6 MB. Free memory was 95.4 MB in the beginning and 93.3 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 12.3s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 6.8s. Construction of modules took 0.3s. Büchi inclusion checks took 4.7s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.1s 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, 0.3s 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: 78ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s - 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@c6e91d6=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! [2021-10-29 00:03:27,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:27,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8de4f7-1eb9-4e78-a277-dfce2034cbaf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...