./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3 --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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:06:42,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:06:42,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:06:42,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:06:42,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:06:42,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:06:42,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:06:42,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:06:42,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:06:42,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:06:42,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:06:42,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:06:42,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:06:42,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:06:42,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:06:42,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:06:42,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:06:42,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:06:42,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:06:42,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:06:42,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:06:42,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:06:42,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:06:42,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:06:42,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:06:42,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:06:42,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:06:42,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:06:42,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:06:42,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:06:42,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:06:42,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:06:42,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:06:42,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:06:42,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:06:42,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:06:42,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:06:42,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:06:42,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:06:42,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:06:42,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:06:42,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-15 19:06:42,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:06:42,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:06:42,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:06:42,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:06:42,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:06:42,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:06:42,441 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:06:42,441 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-15 19:06:42,442 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-15 19:06:42,442 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-15 19:06:42,442 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-15 19:06:42,442 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-15 19:06:42,442 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-15 19:06:42,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:06:42,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:06:42,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:06:42,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:06:42,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-15 19:06:42,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-15 19:06:42,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-15 19:06:42,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:06:42,444 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-15 19:06:42,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:06:42,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-15 19:06:42,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:06:42,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:06:42,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:06:42,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:06:42,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:06:42,447 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-15 19:06:42,447 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_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2021-10-15 19:06:42,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:06:42,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:06:42,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:06:42,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:06:42,722 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:06:42,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-10-15 19:06:42,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/data/78c7767a1/bf70d53f645147f0a33b0eb6997e972c/FLAGbadf3181e [2021-10-15 19:06:43,226 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:06:43,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-10-15 19:06:43,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/data/78c7767a1/bf70d53f645147f0a33b0eb6997e972c/FLAGbadf3181e [2021-10-15 19:06:43,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/data/78c7767a1/bf70d53f645147f0a33b0eb6997e972c [2021-10-15 19:06:43,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:06:43,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:06:43,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:06:43,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:06:43,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:06:43,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f65e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43, skipping insertion in model container [2021-10-15 19:06:43,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:06:43,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:06:43,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:06:43,449 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:06:43,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:06:43,475 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:06:43,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43 WrapperNode [2021-10-15 19:06:43,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:06:43,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:06:43,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:06:43,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:06:43,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:06:43,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:06:43,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:06:43,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:06:43,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:06:43,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:06:43,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:06:43,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:06:43,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (1/1) ... [2021-10-15 19:06:43,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:43,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:43,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:43,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-15 19:06:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:06:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:06:43,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:06:43,779 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 19:06:43,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:43 BoogieIcfgContainer [2021-10-15 19:06:43,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:06:43,782 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-15 19:06:43,782 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-15 19:06:43,786 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-15 19:06:43,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:06:43,787 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 07:06:43" (1/3) ... [2021-10-15 19:06:43,788 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@135c5301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 07:06:43, skipping insertion in model container [2021-10-15 19:06:43,788 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:06:43,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:43" (2/3) ... [2021-10-15 19:06:43,789 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@135c5301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 07:06:43, skipping insertion in model container [2021-10-15 19:06:43,789 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:06:43,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:43" (3/3) ... [2021-10-15 19:06:43,790 INFO L389 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-10-15 19:06:43,837 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-15 19:06:43,837 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-15 19:06:43,837 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-15 19:06:43,837 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-15 19:06:43,838 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-15 19:06:43,838 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-15 19:06:43,838 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-15 19:06:43,838 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-15 19:06:43,852 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:43,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:43,870 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:43,870 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:43,876 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 19:06:43,876 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 19:06:43,876 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-15 19:06:43,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:43,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:43,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:43,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:43,879 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 19:06:43,879 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 19:06:43,886 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 6#L18-2true [2021-10-15 19:06:43,886 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 3#L19-2true main_~y~0 := main_~y~0 - 1; 6#L18-2true [2021-10-15 19:06:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:43,892 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-15 19:06:43,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:43,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044709447] [2021-10-15 19:06:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:43,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:43,979 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:43,997 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:44,001 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2021-10-15 19:06:44,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:44,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620941646] [2021-10-15 19:06:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:44,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:44,013 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:44,020 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2021-10-15 19:06:44,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:44,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274183196] [2021-10-15 19:06:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:44,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:44,034 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:44,042 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:44,142 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:44,142 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:44,143 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:44,143 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:44,143 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:44,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:44,143 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:44,143 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2021-10-15 19:06:44,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:44,144 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:44,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,272 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:44,272 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:44,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-15 19:06:44,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:44,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:44,300 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:44,300 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: [] [2021-10-15 19:06:44,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:44,350 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:44,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-15 19:06:44,385 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:44,385 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: [] [2021-10-15 19:06:44,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:44,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:44,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-15 19:06:44,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:44,448 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:44,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-15 19:06:44,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:44,477 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:44,487 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:44,487 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:44,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-15 19:06:44,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-15 19:06:44,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:44,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:44,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-15 19:06:44,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:44,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:44,586 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:44,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,588 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:44,589 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:44,589 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:44,589 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:44,589 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:44,589 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,589 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:44,589 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:44,589 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2021-10-15 19:06:44,589 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:44,589 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:44,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:44,703 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:44,708 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:44,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-15 19:06:44,717 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 [2021-10-15 19:06:44,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:44,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:44,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:44,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:44,732 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 19:06:44,732 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 19:06:44,764 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:44,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,791 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-15 19:06:44,793 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 [2021-10-15 19:06:44,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:44,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:44,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:44,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:44,805 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 19:06:44,805 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 19:06:44,839 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:44,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-15 19:06:44,863 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 [2021-10-15 19:06:44,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:44,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:44,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:44,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:44,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:44,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:44,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:44,881 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:44,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-15 19:06:44,909 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 [2021-10-15 19:06:44,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:44,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:44,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:44,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:44,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:44,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:44,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:44,931 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:44,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:44,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-15 19:06:44,959 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 19:06:44,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:44,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:44,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:44,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:44,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:44,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:44,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:44,982 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:44,986 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:06:44,986 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 19:06:44,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:44,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:44,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:44,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-15 19:06:45,049 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:45,049 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:45,049 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:45,050 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2021-10-15 19:06:45,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,092 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:45,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:45,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:45,150 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:45,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:45,201 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 [2021-10-15 19:06:45,202 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2021-10-15 19:06:45,287 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 37 states and 54 transitions. Complement of second has 8 states. [2021-10-15 19:06:45,288 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 [2021-10-15 19:06:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2021-10-15 19:06:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2021-10-15 19:06:45,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-15 19:06:45,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:45,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-15 19:06:45,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:45,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-15 19:06:45,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:45,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2021-10-15 19:06:45,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:45,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2021-10-15 19:06:45,310 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-15 19:06:45,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-15 19:06:45,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2021-10-15 19:06:45,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:45,312 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-10-15 19:06:45,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2021-10-15 19:06:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-15 19:06:45,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2021-10-15 19:06:45,348 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-10-15 19:06:45,348 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-10-15 19:06:45,348 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-15 19:06:45,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2021-10-15 19:06:45,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:45,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:45,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:45,354 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-15 19:06:45,354 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 19:06:45,354 INFO L791 eck$LassoCheckResult]: Stem: 91#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 92#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 95#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2021-10-15 19:06:45,354 INFO L793 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2021-10-15 19:06:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:45,356 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2021-10-15 19:06:45,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:45,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698882729] [2021-10-15 19:06:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:45,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:45,377 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:45,384 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:45,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:45,384 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-10-15 19:06:45,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:45,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133184310] [2021-10-15 19:06:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:45,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:45,390 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:45,394 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:45,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2021-10-15 19:06:45,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:45,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846827238] [2021-10-15 19:06:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:45,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:45,410 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:45,418 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:45,438 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:45,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:45,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:45,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:45,438 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:45,438 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:45,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:45,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2021-10-15 19:06:45,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:45,439 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:45,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,503 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:45,503 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:45,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:45,505 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:45,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-15 19:06:45,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:45,514 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:45,529 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:45,529 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: [] [2021-10-15 19:06:45,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:45,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:45,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:45,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:45,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-15 19:06:45,567 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:45,567 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: [] [2021-10-15 19:06:45,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:45,591 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:45,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-15 19:06:45,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:45,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:45,606 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:45,606 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:45,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:45,628 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:45,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-15 19:06:45,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:45,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:45,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:45,669 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:45,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-15 19:06:45,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:45,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:45,803 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:45,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,810 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:45,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:45,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:45,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:45,810 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:45,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:45,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:45,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2021-10-15 19:06:45,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:45,811 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:45,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:45,895 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:45,895 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:45,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:45,899 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:45,905 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 [2021-10-15 19:06:45,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:45,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:45,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:45,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:45,921 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 19:06:45,922 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 19:06:45,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-15 19:06:45,933 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:45,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:45,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:45,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:45,967 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:45,975 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 [2021-10-15 19:06:45,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:45,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:45,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:45,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:45,996 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 19:06:45,996 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 19:06:46,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-15 19:06:46,009 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:46,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:46,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:46,051 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:46,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-15 19:06:46,060 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 [2021-10-15 19:06:46,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:46,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:46,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:46,069 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-15 19:06:46,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:46,070 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-15 19:06:46,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:46,083 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:46,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:46,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:46,105 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:46,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-15 19:06:46,106 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 [2021-10-15 19:06:46,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:46,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:46,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:46,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:46,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:46,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:46,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:46,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:46,135 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:06:46,135 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 19:06:46,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:46,153 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:46,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-15 19:06:46,156 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:46,156 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:46,156 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:46,156 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2021-10-15 19:06:46,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:46,176 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:46,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:46,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:46,230 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:46,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:46,232 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-15 19:06:46,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:46,245 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 25 states and 39 transitions. Complement of second has 6 states. [2021-10-15 19:06:46,245 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 [2021-10-15 19:06:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-10-15 19:06:46,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2021-10-15 19:06:46,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:46,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-15 19:06:46,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:46,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-15 19:06:46,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:46,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2021-10-15 19:06:46,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:46,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2021-10-15 19:06:46,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-15 19:06:46,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-15 19:06:46,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2021-10-15 19:06:46,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:46,250 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-15 19:06:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2021-10-15 19:06:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-15 19:06:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2021-10-15 19:06:46,253 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2021-10-15 19:06:46,253 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2021-10-15 19:06:46,253 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-15 19:06:46,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2021-10-15 19:06:46,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:46,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:46,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:46,255 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-15 19:06:46,255 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 19:06:46,256 INFO L791 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 167#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 170#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 175#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 177#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 171#L20-3 [2021-10-15 19:06:46,256 INFO L793 eck$LassoCheckResult]: Loop: 171#L20-3 main_~x~0 := main_~x~0 - 1; 162#L19-2 main_~y~0 := main_~y~0 - 1; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 171#L20-3 [2021-10-15 19:06:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2021-10-15 19:06:46,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:46,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404570336] [2021-10-15 19:06:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:46,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:46,264 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:46,303 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:46,304 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2021-10-15 19:06:46,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:46,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095254032] [2021-10-15 19:06:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:46,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:46,310 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:46,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2021-10-15 19:06:46,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:46,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511409296] [2021-10-15 19:06:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:46,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:46,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:46,340 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:46,351 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:46,400 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:46,401 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:46,401 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:46,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:46,401 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:46,401 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,401 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:46,401 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:46,401 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2021-10-15 19:06:46,401 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:46,402 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:46,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:46,502 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:46,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:46,505 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:46,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:46,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:46,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-15 19:06:46,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:46,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:46,581 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:46,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:46,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:46,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-15 19:06:46,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:46,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:46,781 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:46,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:46,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:46,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:46,781 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:46,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,781 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:46,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:46,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2021-10-15 19:06:46,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:46,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:46,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:46,906 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:46,906 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:46,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:46,908 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:46,914 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 [2021-10-15 19:06:46,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:46,923 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:46,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:46,924 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-15 19:06:46,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:46,927 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-15 19:06:46,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:46,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-15 19:06:46,961 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:46,967 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:06:46,967 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 19:06:46,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:46,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:46,968 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:46,989 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:46,989 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:46,989 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:46,989 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-15 19:06:47,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-15 19:06:47,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:47,031 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:47,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:47,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:47,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:47,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:47,189 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 [2021-10-15 19:06:47,190 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 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) [2021-10-15 19:06:47,213 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. 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 46 states and 68 transitions. Complement of second has 8 states. [2021-10-15 19:06:47,213 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 [2021-10-15 19:06:47,213 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) [2021-10-15 19:06:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-10-15 19:06:47,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2021-10-15 19:06:47,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:47,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2021-10-15 19:06:47,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:47,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2021-10-15 19:06:47,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:47,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2021-10-15 19:06:47,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:47,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2021-10-15 19:06:47,220 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-15 19:06:47,220 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-10-15 19:06:47,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2021-10-15 19:06:47,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:47,220 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-10-15 19:06:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2021-10-15 19:06:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-15 19:06:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 29 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) [2021-10-15 19:06:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-15 19:06:47,225 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-15 19:06:47,225 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-15 19:06:47,225 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-15 19:06:47,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2021-10-15 19:06:47,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-15 19:06:47,227 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:47,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:47,227 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-15 19:06:47,227 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-15 19:06:47,228 INFO L791 eck$LassoCheckResult]: Stem: 284#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 285#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 286#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 292#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 293#L20-3 main_~x~0 := main_~x~0 - 1; 282#L19-2 main_~y~0 := main_~y~0 - 1; 283#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 289#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 290#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 291#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 296#L20-3 [2021-10-15 19:06:47,228 INFO L793 eck$LassoCheckResult]: Loop: 296#L20-3 main_~x~0 := main_~x~0 - 1; 280#L19-2 main_~y~0 := main_~y~0 - 1; 281#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 297#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 298#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 296#L20-3 [2021-10-15 19:06:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:47,228 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2021-10-15 19:06:47,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:47,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484136134] [2021-10-15 19:06:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:47,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:06:47,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:47,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484136134] [2021-10-15 19:06:47,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484136134] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:47,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:47,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:06:47,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363369664] [2021-10-15 19:06:47,278 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-15 19:06:47,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:47,278 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2021-10-15 19:06:47,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:47,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097419933] [2021-10-15 19:06:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:47,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:47,284 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:47,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:47,349 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:47,349 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:47,349 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:47,349 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:47,350 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:47,350 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,350 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:47,350 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:47,350 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2021-10-15 19:06:47,350 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:47,350 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:47,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:47,483 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:47,483 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:47,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:47,485 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:47,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:47,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:47,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-15 19:06:47,530 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:47,530 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=4} Honda state: {ULTIMATE.start_main_#t~nondet1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:47,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-15 19:06:47,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:47,556 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:47,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-15 19:06:47,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:47,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:47,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:47,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:47,587 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:47,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-15 19:06:47,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:47,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:47,656 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:47,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:47,659 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:47,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:47,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:47,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:47,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:47,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:47,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:47,659 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2021-10-15 19:06:47,659 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:47,659 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:47,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:47,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:47,766 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:47,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:47,768 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:47,774 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 [2021-10-15 19:06:47,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:47,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:47,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:47,783 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-15 19:06:47,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:47,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-15 19:06:47,784 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-15 19:06:47,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:47,800 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:47,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:47,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:47,834 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:47,842 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 [2021-10-15 19:06:47,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:47,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:47,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:47,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:47,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:47,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:47,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:47,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-15 19:06:47,865 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:47,867 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-15 19:06:47,867 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 19:06:47,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:47,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:47,868 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:47,870 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:47,870 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:47,870 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:47,870 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-15 19:06:47,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-15 19:06:47,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:47,908 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:47,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:47,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:47,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:47,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:48,018 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 [2021-10-15 19:06:48,018 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-15 19:06:48,057 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 80 states and 118 transitions. Complement of second has 7 states. [2021-10-15 19:06:48,057 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 [2021-10-15 19:06:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-10-15 19:06:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2021-10-15 19:06:48,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2021-10-15 19:06:48,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2021-10-15 19:06:48,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2021-10-15 19:06:48,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2021-10-15 19:06:48,072 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-10-15 19:06:48,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2021-10-15 19:06:48,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-15 19:06:48,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-15 19:06:48,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2021-10-15 19:06:48,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:48,074 INFO L681 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2021-10-15 19:06:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2021-10-15 19:06:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2021-10-15 19:06:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.5) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2021-10-15 19:06:48,078 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2021-10-15 19:06:48,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:48,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:06:48,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:06:48,086 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2021-10-15 19:06:48,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:48,109 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2021-10-15 19:06:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:06:48,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2021-10-15 19:06:48,111 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-10-15 19:06:48,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2021-10-15 19:06:48,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-15 19:06:48,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-15 19:06:48,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2021-10-15 19:06:48,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:48,115 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2021-10-15 19:06:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2021-10-15 19:06:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-15 19:06:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2021-10-15 19:06:48,124 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2021-10-15 19:06:48,124 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2021-10-15 19:06:48,124 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-15 19:06:48,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2021-10-15 19:06:48,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-10-15 19:06:48,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:48,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:48,126 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-15 19:06:48,126 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 19:06:48,126 INFO L791 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 543#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 544#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 557#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 549#L20-3 main_~x~0 := main_~x~0 - 1; 540#L19-2 main_~y~0 := main_~y~0 - 1; 541#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 545#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 546#L20-2 [2021-10-15 19:06:48,127 INFO L793 eck$LassoCheckResult]: Loop: 546#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 546#L20-2 [2021-10-15 19:06:48,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2021-10-15 19:06:48,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:48,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099881325] [2021-10-15 19:06:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:48,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,153 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,160 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2021-10-15 19:06:48,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:48,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030884518] [2021-10-15 19:06:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:48,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,172 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2021-10-15 19:06:48,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:48,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861824497] [2021-10-15 19:06:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:48,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,201 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:48,230 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:48,230 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:48,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:48,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:48,231 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:48,231 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:48,231 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:48,231 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:48,231 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2021-10-15 19:06:48,231 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:48,231 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:48,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:48,279 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:48,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:48,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:48,281 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:48,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:48,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:48,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-15 19:06:48,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:48,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:48,357 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:48,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:48,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:48,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-15 19:06:48,534 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:48,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:48,539 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:48,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:48,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:48,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:48,540 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:48,540 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:48,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:48,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:48,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2021-10-15 19:06:48,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:48,540 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:48,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:48,595 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:48,595 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:48,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:48,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:48,596 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:48,602 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 [2021-10-15 19:06:48,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:48,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:48,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:48,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:48,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:48,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:48,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:48,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-15 19:06:48,629 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:48,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:06:48,631 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 19:06:48,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:48,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:48,633 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:48,635 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:48,635 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:48,635 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:48,635 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2021-10-15 19:06:48,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-15 19:06:48,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:48,668 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:48,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:48,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:48,720 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:48,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:48,721 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-15 19:06:48,721 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-15 19:06:48,731 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 34 states and 50 transitions. Complement of second has 5 states. [2021-10-15 19:06:48,731 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 [2021-10-15 19:06:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-15 19:06:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-10-15 19:06:48,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2021-10-15 19:06:48,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,732 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 19:06:48,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:48,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:48,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:48,780 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:48,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:48,781 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-15 19:06:48,781 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-15 19:06:48,788 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 34 states and 50 transitions. Complement of second has 5 states. [2021-10-15 19:06:48,789 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 [2021-10-15 19:06:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-15 19:06:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-10-15 19:06:48,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2021-10-15 19:06:48,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,790 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 19:06:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:48,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:48,853 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:48,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:48,854 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 1 loop predicates [2021-10-15 19:06:48,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-15 19:06:48,869 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 38 states and 54 transitions. Complement of second has 4 states. [2021-10-15 19:06:48,870 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 [2021-10-15 19:06:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-15 19:06:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-10-15 19:06:48,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2021-10-15 19:06:48,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2021-10-15 19:06:48,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2021-10-15 19:06:48,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:48,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2021-10-15 19:06:48,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:48,875 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2021-10-15 19:06:48,875 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-15 19:06:48,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-15 19:06:48,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2021-10-15 19:06:48,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:48,875 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-15 19:06:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2021-10-15 19:06:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-15 19:06:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-10-15 19:06:48,881 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-10-15 19:06:48,881 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-10-15 19:06:48,881 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-15 19:06:48,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2021-10-15 19:06:48,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:48,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:48,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:48,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2021-10-15 19:06:48,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 19:06:48,885 INFO L791 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 802#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 803#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 805#L20-3 main_~x~0 := main_~x~0 - 1; 796#L19-2 main_~y~0 := main_~y~0 - 1; 797#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 801#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 794#L19-2 [2021-10-15 19:06:48,885 INFO L793 eck$LassoCheckResult]: Loop: 794#L19-2 main_~y~0 := main_~y~0 - 1; 795#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 800#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 794#L19-2 [2021-10-15 19:06:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2021-10-15 19:06:48,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:48,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235860794] [2021-10-15 19:06:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:48,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,909 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,929 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:48,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,930 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2021-10-15 19:06:48,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:48,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468745730] [2021-10-15 19:06:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:48,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:48,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,966 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:48,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2021-10-15 19:06:48,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:48,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18745902] [2021-10-15 19:06:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:48,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:49,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-15 19:06:49,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:49,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18745902] [2021-10-15 19:06:49,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18745902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:06:49,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723405326] [2021-10-15 19:06:49,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:06:49,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:06:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,049 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-15 19:06:49,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:06:49,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:06:49,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:06:49,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-15 19:06:49,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723405326] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:06:49,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:06:49,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-15 19:06:49,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122192606] [2021-10-15 19:06:49,216 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:49,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:49,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:49,217 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:49,217 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:49,217 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,217 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:49,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:49,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2021-10-15 19:06:49,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:49,217 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:49,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,269 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:49,269 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:49,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,270 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:49,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:49,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-15 19:06:49,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:49,287 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:49,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:49,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,308 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-15 19:06:49,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:49,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:49,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:49,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:49,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:49,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,360 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-15 19:06:49,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:49,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:49,369 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:49,370 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:49,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:49,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,393 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-15 19:06:49,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:49,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:49,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:49,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,435 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-15 19:06:49,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:49,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:49,510 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:49,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:49,513 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:49,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:49,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:49,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:49,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:49,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:49,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:49,514 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2021-10-15 19:06:49,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:49,514 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:49,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:49,573 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:49,574 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:49,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,575 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-15 19:06:49,576 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 [2021-10-15 19:06:49,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:49,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:49,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:49,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:49,588 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 19:06:49,588 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 19:06:49,599 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:49,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-15 19:06:49,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,633 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,639 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 [2021-10-15 19:06:49,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:49,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:49,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:49,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:49,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:49,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:49,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:49,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-15 19:06:49,665 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:49,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-15 19:06:49,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,695 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-15 19:06:49,697 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 [2021-10-15 19:06:49,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:49,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:49,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:49,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:49,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:49,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:49,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:49,707 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:49,712 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:06:49,712 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 19:06:49,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:49,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:49,721 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:49,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:49,730 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:49,730 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:49,730 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-15 19:06:49,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-15 19:06:49,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:49,764 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:49,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:49,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:49,836 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:49,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:49,867 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 [2021-10-15 19:06:49,870 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-15 19:06:49,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Result 63 states and 85 transitions. Complement of second has 7 states. [2021-10-15 19:06:49,897 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 [2021-10-15 19:06:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-15 19:06:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-15 19:06:49,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2021-10-15 19:06:49,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:49,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2021-10-15 19:06:49,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:49,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2021-10-15 19:06:49,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:49,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2021-10-15 19:06:49,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:49,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2021-10-15 19:06:49,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-15 19:06:49,901 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-15 19:06:49,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2021-10-15 19:06:49,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:49,902 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2021-10-15 19:06:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2021-10-15 19:06:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2021-10-15 19:06:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 32 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) [2021-10-15 19:06:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-10-15 19:06:49,905 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-10-15 19:06:49,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:06:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:06:49,906 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) [2021-10-15 19:06:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:49,927 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2021-10-15 19:06:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:06:49,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2021-10-15 19:06:49,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:49,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2021-10-15 19:06:49,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-15 19:06:49,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-15 19:06:49,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2021-10-15 19:06:49,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:49,931 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-10-15 19:06:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2021-10-15 19:06:49,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2021-10-15 19:06:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.325) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2021-10-15 19:06:49,935 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2021-10-15 19:06:49,935 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2021-10-15 19:06:49,935 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-15 19:06:49,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2021-10-15 19:06:49,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:49,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:49,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:49,936 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2021-10-15 19:06:49,937 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 19:06:49,937 INFO L791 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1113#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1134#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1132#L20-3 main_~x~0 := main_~x~0 - 1; 1131#L19-2 main_~y~0 := main_~y~0 - 1; 1106#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1107#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1125#L19-2 main_~y~0 := main_~y~0 - 1; 1128#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1124#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1122#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1118#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1121#L20-3 main_~x~0 := main_~x~0 - 1; 1120#L19-2 main_~y~0 := main_~y~0 - 1; 1119#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1116#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1099#L19-2 [2021-10-15 19:06:49,937 INFO L793 eck$LassoCheckResult]: Loop: 1099#L19-2 main_~y~0 := main_~y~0 - 1; 1100#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1105#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1099#L19-2 [2021-10-15 19:06:49,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:49,937 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2021-10-15 19:06:49,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:49,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156899023] [2021-10-15 19:06:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:49,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:49,948 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:49,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:49,958 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2021-10-15 19:06:49,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:49,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066091889] [2021-10-15 19:06:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:49,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:49,963 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:49,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:49,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:49,972 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2021-10-15 19:06:49,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:49,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341427647] [2021-10-15 19:06:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:49,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-15 19:06:50,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:50,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341427647] [2021-10-15 19:06:50,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341427647] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:06:50,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390344437] [2021-10-15 19:06:50,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-15 19:06:50,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:06:50,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:50,045 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:06:50,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-15 19:06:50,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-15 19:06:50,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:06:50,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:06:50,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:50,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-15 19:06:50,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390344437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:06:50,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:06:50,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-15 19:06:50,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367642414] [2021-10-15 19:06:50,251 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:50,251 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:50,251 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:50,251 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:50,251 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:50,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:50,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:50,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2021-10-15 19:06:50,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:50,252 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:50,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,312 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:50,312 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:50,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:50,317 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:50,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:50,322 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:50,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-15 19:06:50,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:50,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 19:06:50,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:50,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:50,357 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:50,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-15 19:06:50,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:50,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:50,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:50,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:50,394 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:50,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-15 19:06:50,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:50,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:50,462 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:50,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:50,465 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:50,465 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:50,465 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:50,465 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:50,465 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:50,465 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,465 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:50,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:50,465 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2021-10-15 19:06:50,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:50,465 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:50,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:50,528 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:50,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:50,530 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:50,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-15 19:06:50,532 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 [2021-10-15 19:06:50,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:50,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:50,539 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:50,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:50,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:50,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:50,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:50,541 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:50,543 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:06:50,543 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 19:06:50,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:50,545 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:50,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-15 19:06:50,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:50,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:50,547 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:50,547 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-15 19:06:50,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:50,568 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:50,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:50,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:50,653 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:50,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:50,683 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 [2021-10-15 19:06:50,683 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:50,702 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 46 states and 61 transitions. Complement of second has 7 states. [2021-10-15 19:06:50,704 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 [2021-10-15 19:06:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-15 19:06:50,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2021-10-15 19:06:50,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:50,705 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 19:06:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:50,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:50,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:50,780 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:50,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:50,809 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 [2021-10-15 19:06:50,809 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:50,840 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 74 states and 97 transitions. Complement of second has 9 states. [2021-10-15 19:06:50,840 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 [2021-10-15 19:06:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-10-15 19:06:50,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2021-10-15 19:06:50,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:50,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2021-10-15 19:06:50,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:50,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2021-10-15 19:06:50,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:50,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2021-10-15 19:06:50,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:50,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2021-10-15 19:06:50,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-15 19:06:50,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-15 19:06:50,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2021-10-15 19:06:50,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:50,844 INFO L681 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2021-10-15 19:06:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2021-10-15 19:06:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-10-15 19:06:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 59 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2021-10-15 19:06:50,849 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2021-10-15 19:06:50,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:06:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:50,849 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:50,876 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2021-10-15 19:06:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:06:50,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2021-10-15 19:06:50,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:50,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2021-10-15 19:06:50,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-15 19:06:50,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-15 19:06:50,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2021-10-15 19:06:50,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 19:06:50,880 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2021-10-15 19:06:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2021-10-15 19:06:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2021-10-15 19:06:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 83 states have (on average 1.3373493975903614) internal successors, (111), 82 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2021-10-15 19:06:50,885 INFO L704 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2021-10-15 19:06:50,885 INFO L587 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2021-10-15 19:06:50,885 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-15 19:06:50,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2021-10-15 19:06:50,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 19:06:50,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:06:50,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:06:50,887 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2021-10-15 19:06:50,887 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 19:06:50,887 INFO L791 eck$LassoCheckResult]: Stem: 1709#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1710#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1711#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1714#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1705#L19-2 [2021-10-15 19:06:50,887 INFO L793 eck$LassoCheckResult]: Loop: 1705#L19-2 main_~y~0 := main_~y~0 - 1; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1721#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1705#L19-2 [2021-10-15 19:06:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:50,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2021-10-15 19:06:50,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:50,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211332494] [2021-10-15 19:06:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:50,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:50,908 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:50,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:50,921 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2021-10-15 19:06:50,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:50,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403571028] [2021-10-15 19:06:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:50,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:50,924 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:50,934 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:50,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:50,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2021-10-15 19:06:50,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:50,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83815452] [2021-10-15 19:06:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:50,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:50,954 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:50,963 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:50,986 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:50,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:50,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:50,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:50,987 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 19:06:50,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:50,987 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:50,987 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:50,987 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2021-10-15 19:06:50,987 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:50,987 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:50,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:50,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:51,035 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:51,035 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 19:06:51,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:51,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:51,041 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:51,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:51,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:51,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-15 19:06:51,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 19:06:51,077 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: [] [2021-10-15 19:06:51,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:51,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:51,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:51,113 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:51,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-10-15 19:06:51,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-15 19:06:51,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 19:06:51,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:51,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-15 19:06:51,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:51,207 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:51,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-15 19:06:51,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 19:06:51,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 19:06:51,274 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 19:06:51,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:51,277 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 19:06:51,277 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 19:06:51,278 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 19:06:51,278 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 19:06:51,278 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 19:06:51,278 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:51,278 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 19:06:51,278 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 19:06:51,278 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2021-10-15 19:06:51,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 19:06:51,278 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 19:06:51,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:51,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:51,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:51,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:51,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 19:06:51,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 19:06:51,340 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 19:06:51,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:51,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:51,341 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:51,346 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 [2021-10-15 19:06:51,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:51,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:51,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:51,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:51,357 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 19:06:51,357 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 19:06:51,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-15 19:06:51,373 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 19:06:51,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-15 19:06:51,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:51,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:51,405 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:51,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-15 19:06:51,407 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 [2021-10-15 19:06:51,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 19:06:51,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 19:06:51,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 19:06:51,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 19:06:51,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 19:06:51,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 19:06:51,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 19:06:51,428 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 19:06:51,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 19:06:51,431 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 19:06:51,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:06:51,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:51,432 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:51,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-15 19:06:51,439 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 19:06:51,439 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 19:06:51,439 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 19:06:51,439 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-15 19:06:51,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:51,459 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 19:06:51,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:51,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:51,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:51,557 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:51,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:51,580 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 [2021-10-15 19:06:51,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:51,595 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 134 transitions. Complement of second has 7 states. [2021-10-15 19:06:51,596 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 [2021-10-15 19:06:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:51,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-15 19:06:51,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2021-10-15 19:06:51,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:51,597 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 19:06:51,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:51,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:51,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:51,674 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:51,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:51,702 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 [2021-10-15 19:06:51,702 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:51,730 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 128 states and 166 transitions. Complement of second has 9 states. [2021-10-15 19:06:51,730 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 [2021-10-15 19:06:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-10-15 19:06:51,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2021-10-15 19:06:51,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:51,731 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 19:06:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:51,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:51,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:51,820 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:06:51,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:51,853 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 [2021-10-15 19:06:51,853 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:51,873 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 139 states and 187 transitions. Complement of second has 8 states. [2021-10-15 19:06:51,873 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 [2021-10-15 19:06:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-15 19:06:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-15 19:06:51,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2021-10-15 19:06:51,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:51,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2021-10-15 19:06:51,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:51,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2021-10-15 19:06:51,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 19:06:51,876 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2021-10-15 19:06:51,878 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 19:06:51,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2021-10-15 19:06:51,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-15 19:06:51,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-15 19:06:51,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-15 19:06:51,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:51,878 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:06:51,878 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:06:51,878 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:06:51,879 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-15 19:06:51,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-15 19:06:51,879 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 19:06:51,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-15 19:06:51,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 07:06:51 BoogieIcfgContainer [2021-10-15 19:06:51,887 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-15 19:06:51,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:06:51,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:06:51,888 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:06:51,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:43" (3/4) ... [2021-10-15 19:06:51,891 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:06:51,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:06:51,893 INFO L168 Benchmark]: Toolchain (without parser) took 8640.01 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 42.0 MB in the beginning and 48.5 MB in the end (delta: -6.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:51,893 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:06:51,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.55 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 41.8 MB in the beginning and 73.0 MB in the end (delta: -31.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:51,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.99 ms. Allocated memory is still 94.4 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:06:51,895 INFO L168 Benchmark]: Boogie Preprocessor took 19.25 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.7 MB in the end (delta: 852.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:51,895 INFO L168 Benchmark]: RCFGBuilder took 251.27 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 62.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:51,895 INFO L168 Benchmark]: BuchiAutomizer took 8105.15 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.5 MB in the beginning and 48.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:51,896 INFO L168 Benchmark]: Witness Printer took 3.82 ms. Allocated memory is still 113.2 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:06:51,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 222.55 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 41.8 MB in the beginning and 73.0 MB in the end (delta: -31.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.99 ms. Allocated memory is still 94.4 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.25 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.7 MB in the end (delta: 852.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 251.27 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 62.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8105.15 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.5 MB in the beginning and 48.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.82 ms. Allocated memory is still 113.2 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.0s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 6.1s. Construction of modules took 0.1s. Büchi inclusion checks took 1.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 51.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 151 SDslu, 83 SDs, 0 SdLazy, 163 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 165.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax169 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-15 19:06:51,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:52,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:52,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:52,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236e8bd0-0372-4b91-8b27-96a538623097/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...