./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/a.10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/a.10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8289502743fb6ee3e9387ca4db850e54d4ebfec650d98779b674c3406acaae1b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:58:23,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:58:23,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:58:23,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:58:23,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:58:23,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:58:23,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:58:23,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:58:23,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:58:23,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:58:23,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:58:23,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:58:23,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:58:23,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:58:23,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:58:23,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:58:23,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:58:23,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:58:23,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:58:23,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:58:23,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:58:23,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:58:23,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:58:23,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:58:23,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:58:23,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:58:23,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:58:23,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:58:23,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:58:23,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:58:23,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:58:23,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:58:23,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:58:23,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:58:23,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:58:23,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:58:23,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:58:23,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:58:23,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:58:23,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:58:23,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:58:23,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 22:58:24,012 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:58:24,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:58:24,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:58:24,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:58:24,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:58:24,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:58:24,015 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:58:24,015 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:58:24,016 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:58:24,016 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:58:24,016 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:58:24,016 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:58:24,017 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:58:24,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:58:24,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:58:24,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:58:24,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:58:24,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:58:24,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:58:24,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:58:24,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:58:24,019 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:58:24,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:58:24,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:58:24,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:58:24,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:58:24,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:58:24,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:58:24,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:58:24,022 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:58:24,022 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_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8289502743fb6ee3e9387ca4db850e54d4ebfec650d98779b674c3406acaae1b [2021-10-28 22:58:24,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:58:24,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:58:24,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:58:24,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:58:24,350 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:58:24,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/a.10.c [2021-10-28 22:58:24,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/data/fa19e4b32/66c3ec1cc15a41bdb399afa5bd98d993/FLAG1544d8a72 [2021-10-28 22:58:25,021 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:58:25,022 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/sv-benchmarks/c/termination-restricted-15/a.10.c [2021-10-28 22:58:25,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/data/fa19e4b32/66c3ec1cc15a41bdb399afa5bd98d993/FLAG1544d8a72 [2021-10-28 22:58:25,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/data/fa19e4b32/66c3ec1cc15a41bdb399afa5bd98d993 [2021-10-28 22:58:25,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:58:25,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:58:25,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:25,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:58:25,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:58:25,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7615c6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25, skipping insertion in model container [2021-10-28 22:58:25,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:58:25,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:58:25,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:25,668 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:58:25,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:25,719 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:58:25,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25 WrapperNode [2021-10-28 22:58:25,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:25,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:25,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:58:25,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:58:25,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:25,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:58:25,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:58:25,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:58:25,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:58:25,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:58:25,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:58:25,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:58:25,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (1/1) ... [2021-10-28 22:58:25,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:25,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:25,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:58:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:58:25,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:58:26,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:58:26,072 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 22:58:26,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:26 BoogieIcfgContainer [2021-10-28 22:58:26,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:58:26,076 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:58:26,076 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:58:26,081 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:58:26,082 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:58:26,083 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:58:25" (1/3) ... [2021-10-28 22:58:26,084 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@545b9bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:58:26, skipping insertion in model container [2021-10-28 22:58:26,085 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:58:26,085 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:25" (2/3) ... [2021-10-28 22:58:26,086 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@545b9bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:58:26, skipping insertion in model container [2021-10-28 22:58:26,086 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:58:26,086 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:26" (3/3) ... [2021-10-28 22:58:26,088 INFO L389 chiAutomizerObserver]: Analyzing ICFG a.10.c [2021-10-28 22:58:26,142 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:58:26,142 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:58:26,143 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:58:26,143 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:58:26,143 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:58:26,143 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:58:26,144 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:58:26,144 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:58:26,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2021-10-28 22:58:26,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:26,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:26,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:26,186 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 22:58:26,187 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:58:26,187 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:58:26,187 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2021-10-28 22:58:26,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:26,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:26,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:26,189 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 22:58:26,189 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:58:26,195 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 3#L12-2true [2021-10-28 22:58:26,196 INFO L793 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!!(main_~x~0 == main_~y~0); 8#L12true assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 3#L12-2true [2021-10-28 22:58:26,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 22:58:26,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619755407] [2021-10-28 22:58:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:26,301 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:26,326 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:26,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-10-28 22:58:26,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78771404] [2021-10-28 22:58:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:26,346 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:26,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:26,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-28 22:58:26,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:26,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258401399] [2021-10-28 22:58:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:26,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:26,367 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:26,376 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:26,474 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:26,475 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:26,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:26,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:26,476 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:58:26,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:26,476 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:26,476 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:26,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration1_Loop [2021-10-28 22:58:26,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:26,477 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:26,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:26,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:26,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:26,657 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:26,658 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:58:26,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:26,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:26,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 22:58:26,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:26,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:26,704 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:58:26,704 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: [] [2021-10-28 22:58:26,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-28 22:58:26,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:26,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:26,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:26,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 22:58:26,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:26,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:26,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:58:26,754 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: [] [2021-10-28 22:58:26,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:26,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:26,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:26,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:26,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:26,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:26,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 22:58:26,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-28 22:58:26,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:26,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:26,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:26,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 22:58:26,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:58:26,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:27,037 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:58:27,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:27,044 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:27,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:27,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:27,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:27,045 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:58:27,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,045 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:27,045 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:27,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration1_Loop [2021-10-28 22:58:27,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:27,045 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:27,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:27,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:27,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:27,111 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:27,141 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:58:27,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,151 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 22:58:27,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:58:27,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:27,171 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:27,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:58:27,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:27,178 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:58:27,178 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:58:27,198 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:58:27,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:27,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 22:58:27,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:58:27,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:27,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:27,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:58:27,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:27,248 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:58:27,249 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:58:27,274 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:58:27,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:27,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 22:58:27,311 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:58:27,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:27,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:58:27,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:27,320 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:58:27,320 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:27,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:58:27,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:58:27,335 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:58:27,341 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 22:58:27,341 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 22:58:27,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 22:58:27,362 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:58:27,363 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:58:27,363 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:58:27,363 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 22:58:27,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:27,391 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:58:27,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:27,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:58:27,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:27,436 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:27,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:27,464 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 [2021-10-28 22:58:27,465 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:27,509 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 30 transitions. Complement of second has 6 states. [2021-10-28 22:58:27,509 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 [2021-10-28 22:58:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-28 22:58:27,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-28 22:58:27,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:27,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2021-10-28 22:58:27,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:27,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-28 22:58:27,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:27,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2021-10-28 22:58:27,520 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:27,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2021-10-28 22:58:27,525 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-28 22:58:27,525 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-28 22:58:27,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-10-28 22:58:27,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:58:27,526 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 22:58:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-10-28 22:58:27,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 22:58:27,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-10-28 22:58:27,555 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 22:58:27,555 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 22:58:27,556 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:58:27,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-10-28 22:58:27,556 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:27,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:27,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:27,557 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 22:58:27,557 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:58:27,558 INFO L791 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 69#L12-2 assume !!!(main_~x~0 == main_~y~0); 67#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 63#L12-2 [2021-10-28 22:58:27,558 INFO L793 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!!(main_~x~0 == main_~y~0); 64#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 63#L12-2 [2021-10-28 22:58:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-28 22:58:27,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:27,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210210972] [2021-10-28 22:58:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:27,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:27,566 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:27,572 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2021-10-28 22:58:27,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:27,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612410401] [2021-10-28 22:58:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:27,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:27,579 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:27,583 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2021-10-28 22:58:27,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:27,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633755572] [2021-10-28 22:58:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:27,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:27,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:27,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633755572] [2021-10-28 22:58:27,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633755572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:27,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325610592] [2021-10-28 22:58:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:27,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:27,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 22:58:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:27,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:27,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:27,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325610592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:27,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:58:27,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 22:58:27,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969757734] [2021-10-28 22:58:27,755 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:27,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:27,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:27,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:27,756 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:58:27,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:27,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:27,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration2_Loop [2021-10-28 22:58:27,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:27,757 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:27,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:27,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:27,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:27,821 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:27,821 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:58:27,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,823 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 22:58:27,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:27,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:27,860 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:58:27,860 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: [] [2021-10-28 22:58:27,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:27,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,900 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 22:58:27,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:27,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:27,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:27,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:27,983 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:27,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:58:27,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:28,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 22:58:28,186 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:58:28,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:28,193 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:28,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:28,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:28,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:28,193 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:58:28,193 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:28,193 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:28,193 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:28,193 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration2_Loop [2021-10-28 22:58:28,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:28,194 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:28,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:28,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:28,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:28,276 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:28,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:58:28,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:28,278 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:28,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:58:28,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:28,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:58:28,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:28,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:58:28,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:28,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:58:28,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:58:28,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 22:58:28,330 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:58:28,340 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 22:58:28,340 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 22:58:28,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:28,343 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:28,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 22:58:28,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:58:28,352 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:58:28,352 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:58:28,352 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 22:58:28,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:28,393 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:58:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:28,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:58:28,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:28,439 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:28,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:28,472 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 [2021-10-28 22:58:28,472 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-10-28 22:58:28,482 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 11 states and 16 transitions. Complement of second has 5 states. [2021-10-28 22:58:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 22:58:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-10-28 22:58:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-10-28 22:58:28,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-10-28 22:58:28,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:28,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 22:58:28,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:28,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-28 22:58:28,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:28,485 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2021-10-28 22:58:28,486 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:28,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2021-10-28 22:58:28,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 22:58:28,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:58:28,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2021-10-28 22:58:28,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:58:28,487 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-10-28 22:58:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2021-10-28 22:58:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 22:58:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2021-10-28 22:58:28,489 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-10-28 22:58:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:28,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:28,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:28,492 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-28 22:58:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:28,516 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2021-10-28 22:58:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:28,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2021-10-28 22:58:28,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:28,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2021-10-28 22:58:28,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:58:28,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:58:28,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2021-10-28 22:58:28,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:58:28,519 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-28 22:58:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2021-10-28 22:58:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2021-10-28 22:58:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-10-28 22:58:28,521 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-28 22:58:28,521 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-28 22:58:28,521 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:58:28,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2021-10-28 22:58:28,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:28,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:28,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:28,522 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:58:28,522 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:58:28,523 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 158#L12-2 assume !!!(main_~x~0 == main_~y~0); 154#L12 [2021-10-28 22:58:28,523 INFO L793 eck$LassoCheckResult]: Loop: 154#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 153#L12-2 assume !!!(main_~x~0 == main_~y~0); 154#L12 [2021-10-28 22:58:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 22:58:28,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:28,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854213611] [2021-10-28 22:58:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:28,529 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:28,533 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2021-10-28 22:58:28,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:28,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317507378] [2021-10-28 22:58:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:28,541 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:28,545 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2021-10-28 22:58:28,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:28,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640533022] [2021-10-28 22:58:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:28,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:28,554 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:28,605 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:28,641 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:28,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:28,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:28,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:28,647 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:58:28,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:28,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:28,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:28,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration3_Loop [2021-10-28 22:58:28,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:28,648 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:28,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:28,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:28,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:28,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:28,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:28,788 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:58:28,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:28,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:28,790 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:28,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:28,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:28,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:28,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 22:58:28,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:28,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:28,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:28,877 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:28,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 22:58:28,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:58:28,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:32,921 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:58:32,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:32,925 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:32,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:32,926 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:32,926 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:32,926 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:58:32,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:32,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:32,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:32,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration3_Loop [2021-10-28 22:58:32,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:32,926 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:32,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:32,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:32,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:33,057 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:33,058 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:58:33,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:33,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:33,059 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:33,062 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:58:33,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:33,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:58:33,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:33,074 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 22:58:33,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:33,077 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 22:58:33,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:58:33,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 22:58:33,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:58:33,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:58:33,096 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 22:58:33,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:33,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:33,098 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:33,110 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:58:33,110 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:58:33,110 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:58:33,111 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-10-28 22:58:33,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 22:58:33,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:33,146 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:58:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:33,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:58:33,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:33,179 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:33,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:33,222 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 22:58:33,222 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:33,237 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 13 transitions. Complement of second has 5 states. [2021-10-28 22:58:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 22:58:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-28 22:58:33,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 22:58:33,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:33,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 22:58:33,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:33,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 22:58:33,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:33,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2021-10-28 22:58:33,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:33,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2021-10-28 22:58:33,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-28 22:58:33,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-28 22:58:33,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-10-28 22:58:33,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:58:33,243 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-28 22:58:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-10-28 22:58:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-10-28 22:58:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-10-28 22:58:33,245 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-28 22:58:33,245 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-28 22:58:33,245 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:58:33,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-10-28 22:58:33,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:58:33,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:33,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:33,246 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2021-10-28 22:58:33,246 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:58:33,246 INFO L791 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 203#L12-2 assume !!!(main_~x~0 == main_~y~0); 204#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 205#L12-2 assume !!!(main_~x~0 == main_~y~0); 206#L12 [2021-10-28 22:58:33,247 INFO L793 eck$LassoCheckResult]: Loop: 206#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 208#L12-2 assume !!!(main_~x~0 == main_~y~0); 206#L12 [2021-10-28 22:58:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:33,247 INFO L85 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2021-10-28 22:58:33,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:33,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144531726] [2021-10-28 22:58:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:33,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:33,260 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:33,280 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:33,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2021-10-28 22:58:33,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:33,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309444198] [2021-10-28 22:58:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:33,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:33,287 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:33,291 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2021-10-28 22:58:33,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:33,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136224854] [2021-10-28 22:58:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:33,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:33,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:33,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136224854] [2021-10-28 22:58:33,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136224854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:33,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:33,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:58:33,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098930339] [2021-10-28 22:58:33,405 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:33,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:33,406 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:33,406 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:33,406 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:58:33,406 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:33,406 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:33,406 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:33,406 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration4_Loop [2021-10-28 22:58:33,406 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:33,406 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:33,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:33,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:33,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:33,493 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:33,493 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:58:33,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:33,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:33,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:33,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:33,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 22:58:33,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:58:33,531 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:58:33,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:33,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:33,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:33,587 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:33,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 22:58:33,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:33,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:33,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:33,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:33,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:33,654 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:33,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 22:58:33,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:58:33,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:37,690 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:58:37,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:37,694 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:37,694 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:37,694 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:37,694 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:37,694 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:58:37,694 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:37,694 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:37,694 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:37,694 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration4_Loop [2021-10-28 22:58:37,694 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:37,695 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:37,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:37,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:37,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:58:37,789 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:37,789 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:58:37,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:37,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:37,791 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:37,799 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:58:37,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 22:58:37,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:37,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:37,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:58:37,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:37,812 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:58:37,812 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:58:37,831 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:58:37,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:37,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:37,870 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:37,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 22:58:37,872 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:58:37,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:37,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:58:37,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:37,881 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 22:58:37,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:37,884 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 22:58:37,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:58:37,905 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:58:37,910 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:58:37,910 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 22:58:37,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:37,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:37,914 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:37,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:58:37,917 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:58:37,917 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:58:37,917 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-10-28 22:58:37,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 22:58:37,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:37,963 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:58:37,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:37,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:58:37,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:38,008 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:38,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:38,036 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 22:58:38,036 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:38,041 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 8 transitions. Complement of second has 3 states. [2021-10-28 22:58:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-10-28 22:58:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2021-10-28 22:58:38,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 22:58:38,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:38,043 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:58:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:38,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:58:38,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:38,090 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:38,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:38,119 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 22:58:38,120 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:38,124 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 8 transitions. Complement of second has 3 states. [2021-10-28 22:58:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-10-28 22:58:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2021-10-28 22:58:38,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 22:58:38,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:38,125 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 22:58:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:38,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:58:38,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:38,188 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:38,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:38,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:38,228 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 22:58:38,228 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:38,241 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 4 states. [2021-10-28 22:58:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 22:58:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-10-28 22:58:38,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 22:58:38,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:38,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-28 22:58:38,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:38,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-28 22:58:38,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:38,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-10-28 22:58:38,244 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:58:38,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2021-10-28 22:58:38,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:58:38,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:58:38,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:58:38,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:38,245 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:38,245 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:38,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:58:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:58:38,246 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:38,246 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 22:58:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:58:38,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 22:58:38,247 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:58:38,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 22:58:38,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:58:38,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:58:38,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:58:38,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:38,247 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:38,248 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:38,248 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:38,248 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 22:58:38,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:58:38,248 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:58:38,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 22:58:38,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:58:38 BoogieIcfgContainer [2021-10-28 22:58:38,257 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:58:38,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:58:38,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:58:38,261 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:58:38,261 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:26" (3/4) ... [2021-10-28 22:58:38,264 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:58:38,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:58:38,267 INFO L168 Benchmark]: Toolchain (without parser) took 12842.71 ms. Allocated memory was 88.1 MB in the beginning and 157.3 MB in the end (delta: 69.2 MB). Free memory was 54.2 MB in the beginning and 125.3 MB in the end (delta: -71.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:38,268 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:38,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.61 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 54.0 MB in the beginning and 107.7 MB in the end (delta: -53.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 130.0 MB. Free memory was 107.7 MB in the beginning and 106.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:38,270 INFO L168 Benchmark]: Boogie Preprocessor took 20.20 ms. Allocated memory is still 130.0 MB. Free memory was 106.4 MB in the beginning and 105.6 MB in the end (delta: 791.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,271 INFO L168 Benchmark]: RCFGBuilder took 281.91 ms. Allocated memory is still 130.0 MB. Free memory was 105.6 MB in the beginning and 97.9 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,272 INFO L168 Benchmark]: BuchiAutomizer took 12180.90 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 97.6 MB in the beginning and 126.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 738.5 kB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,274 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 157.3 MB. Free memory was 126.2 MB in the beginning and 125.3 MB in the end (delta: 947.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:38,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:38,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.61 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 54.0 MB in the beginning and 107.7 MB in the end (delta: -53.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 130.0 MB. Free memory was 107.7 MB in the beginning and 106.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.20 ms. Allocated memory is still 130.0 MB. Free memory was 106.4 MB in the beginning and 105.6 MB in the end (delta: 791.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 281.91 ms. Allocated memory is still 130.0 MB. Free memory was 105.6 MB in the beginning and 97.9 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 12180.90 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 97.6 MB in the beginning and 126.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 738.5 kB. Max. memory is 16.1 GB. * Witness Printer took 4.78 ms. Allocated memory is still 157.3 MB. Free memory was 126.2 MB in the beginning and 125.3 MB in the end (delta: 947.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * y and consists of 4 locations. One deterministic module has affine ranking function x + -1 * y and consists of 3 locations. One deterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 11.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 22:58:38,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:38,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778e10f7-6226-4217-8e15-d200a5f7d9a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...