./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c3e40038ef85c6e1a2de0a898912241a10300c47 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:14:04,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:14:04,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:14:04,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:14:04,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:14:04,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:14:04,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:14:04,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:14:04,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:14:04,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:14:04,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:14:04,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:14:04,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:14:05,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:14:05,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:14:05,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:14:05,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:14:05,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:14:05,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:14:05,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:14:05,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:14:05,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:14:05,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:14:05,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:14:05,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:14:05,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:14:05,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:14:05,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:14:05,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:14:05,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:14:05,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:14:05,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:14:05,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:14:05,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:14:05,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:14:05,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:14:05,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:14:05,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:14:05,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:14:05,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:14:05,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:14:05,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-15 20:14:05,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:14:05,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:14:05,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:14:05,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:14:05,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:14:05,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:14:05,128 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:14:05,129 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-15 20:14:05,129 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-15 20:14:05,129 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-15 20:14:05,131 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-15 20:14:05,131 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-15 20:14:05,132 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-15 20:14:05,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:14:05,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 20:14:05,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:14:05,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:14:05,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-15 20:14:05,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-15 20:14:05,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-15 20:14:05,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:14:05,134 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-15 20:14:05,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:14:05,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-15 20:14:05,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:14:05,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:14:05,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:14:05,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:14:05,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:14:05,141 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-15 20:14:05,141 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_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3e40038ef85c6e1a2de0a898912241a10300c47 [2021-10-15 20:14:05,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:14:05,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:14:05,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:14:05,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:14:05,586 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:14:05,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/termination-restricted-15/c.02.c [2021-10-15 20:14:05,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/data/e0c78d041/27d95a5c00aa435fa316435b14165ced/FLAG45b3c747b [2021-10-15 20:14:06,352 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:14:06,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/sv-benchmarks/c/termination-restricted-15/c.02.c [2021-10-15 20:14:06,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/data/e0c78d041/27d95a5c00aa435fa316435b14165ced/FLAG45b3c747b [2021-10-15 20:14:06,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/data/e0c78d041/27d95a5c00aa435fa316435b14165ced [2021-10-15 20:14:06,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:14:06,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:14:06,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:14:06,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:14:06,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:14:06,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:14:06" (1/1) ... [2021-10-15 20:14:06,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5d76b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:06, skipping insertion in model container [2021-10-15 20:14:06,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:14:06" (1/1) ... [2021-10-15 20:14:06,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:14:06,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:14:07,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:14:07,030 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:14:07,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:14:07,072 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:14:07,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07 WrapperNode [2021-10-15 20:14:07,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:14:07,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:14:07,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:14:07,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:14:07,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:14:07,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:14:07,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:14:07,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:14:07,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:14:07,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:14:07,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:14:07,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:14:07,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (1/1) ... [2021-10-15 20:14:07,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:07,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:07,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:07,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-15 20:14:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:14:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:14:07,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:14:07,473 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 20:14:07,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:14:07 BoogieIcfgContainer [2021-10-15 20:14:07,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:14:07,478 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-15 20:14:07,478 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-15 20:14:07,482 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-15 20:14:07,483 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:14:07,483 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 08:14:06" (1/3) ... [2021-10-15 20:14:07,485 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5325f272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:14:07, skipping insertion in model container [2021-10-15 20:14:07,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:14:07,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:14:07" (2/3) ... [2021-10-15 20:14:07,486 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5325f272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:14:07, skipping insertion in model container [2021-10-15 20:14:07,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:14:07,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:14:07" (3/3) ... [2021-10-15 20:14:07,488 INFO L389 chiAutomizerObserver]: Analyzing ICFG c.02.c [2021-10-15 20:14:07,570 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-15 20:14:07,570 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-15 20:14:07,570 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-15 20:14:07,571 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-15 20:14:07,571 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-15 20:14:07,571 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-15 20:14:07,571 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-15 20:14:07,571 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-15 20:14:07,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:07,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 20:14:07,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:14:07,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:14:07,621 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 20:14:07,622 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 20:14:07,622 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-15 20:14:07,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:07,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-15 20:14:07,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:14:07,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:14:07,625 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 20:14:07,625 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-15 20:14:07,633 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; 4#L10-2true [2021-10-15 20:14:07,634 INFO L793 eck$LassoCheckResult]: Loop: 4#L10-2true assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 7#L13-2true assume !(main_~x~0 > main_~y~0); 9#L13-3true main_~x~0 := main_~x~0 - 2; 4#L10-2true [2021-10-15 20:14:07,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:07,644 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-15 20:14:07,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:07,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159957758] [2021-10-15 20:14:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:07,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:07,758 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:14:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:07,795 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:14:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:07,801 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-10-15 20:14:07,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:07,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711233809] [2021-10-15 20:14:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:07,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:07,832 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:14:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:07,860 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:14:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2021-10-15 20:14:07,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:07,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994142467] [2021-10-15 20:14:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:07,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:07,879 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:14:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:07,915 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:14:08,103 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:14:08,103 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:14:08,104 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:14:08,104 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:14:08,104 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 20:14:08,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:08,105 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:14:08,105 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:14:08,105 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2021-10-15 20:14:08,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:14:08,106 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:14:08,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:08,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:08,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:08,309 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:14:08,310 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 20:14:08,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:08,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:08,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:08,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:08,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:08,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-15 20:14:08,362 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:14:08,363 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:14:08,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:08,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:08,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:08,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:08,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:08,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:08,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-15 20:14:08,447 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:14:08,447 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:14:08,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:08,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:08,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:08,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:08,511 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:08,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-15 20:14:08,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:08,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:08,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:08,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:08,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-15 20:14:08,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 20:14:08,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:08,920 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 20:14:08,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-15 20:14:08,924 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:14:08,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:14:08,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:14:08,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:14:08,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 20:14:08,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:08,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:14:08,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:14:08,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2021-10-15 20:14:08,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:14:08,926 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:14:08,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:08,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:08,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:09,037 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:14:09,043 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 20:14:09,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:09,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:09,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-15 20:14:09,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 20:14:09,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:14:09,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:14:09,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:14:09,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:14:09,083 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 20:14:09,083 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 20:14:09,106 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:14:09,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:09,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:09,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:09,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 20:14:09,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:14:09,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:14:09,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:14:09,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:14:09,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:14:09,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:14:09,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:14:09,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-15 20:14:09,206 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 20:14:09,211 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 20:14:09,212 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-15 20:14:09,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:09,218 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:09,230 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 20:14:09,230 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 20:14:09,230 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 20:14:09,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-15 20:14:09,231 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-10-15 20:14:09,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:09,275 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 20:14:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:09,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:14:09,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:09,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 20:14:09,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:14:09,503 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-15 20:14:09,508 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:09,569 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 35 transitions. Complement of second has 7 states. [2021-10-15 20:14:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-15 20:14:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-15 20:14:09,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-15 20:14:09,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:09,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-15 20:14:09,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:09,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-15 20:14:09,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:09,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2021-10-15 20:14:09,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 20:14:09,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2021-10-15 20:14:09,585 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-15 20:14:09,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-15 20:14:09,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-10-15 20:14:09,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 20:14:09,586 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-15 20:14:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-10-15 20:14:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-10-15 20:14:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2021-10-15 20:14:09,610 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-10-15 20:14:09,610 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-10-15 20:14:09,610 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-15 20:14:09,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2021-10-15 20:14:09,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 20:14:09,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:14:09,611 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:14:09,611 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-15 20:14:09,611 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 20:14:09,611 INFO L791 eck$LassoCheckResult]: Stem: 74#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; 70#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 72#L13-2 [2021-10-15 20:14:09,612 INFO L793 eck$LassoCheckResult]: Loop: 72#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 72#L13-2 [2021-10-15 20:14:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:09,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-15 20:14:09,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:09,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393700251] [2021-10-15 20:14:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:09,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:09,618 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:14:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:09,625 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:14:09,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:09,626 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-10-15 20:14:09,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:09,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918534950] [2021-10-15 20:14:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:09,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:09,632 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:14:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:09,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:14:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-10-15 20:14:09,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:09,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204080042] [2021-10-15 20:14:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:09,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:09,645 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:14:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:09,653 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:14:09,679 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:14:09,679 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:14:09,679 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:14:09,679 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:14:09,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 20:14:09,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:14:09,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:14:09,680 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2021-10-15 20:14:09,680 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:14:09,680 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:14:09,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:09,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:09,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:09,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:09,814 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:14:09,814 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 20:14:09,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:09,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:09,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-15 20:14:09,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:09,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:09,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:14:09,850 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:14:09,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-15 20:14:09,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:09,879 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:09,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:09,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:09,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-15 20:14:09,900 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:14:09,900 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:14:09,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-15 20:14:09,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:09,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:09,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-15 20:14:09,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:09,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:09,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:09,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:09,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:09,965 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:09,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-15 20:14:09,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 20:14:09,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:10,113 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 20:14:10,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:10,116 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:14:10,116 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:14:10,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:14:10,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:14:10,116 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 20:14:10,116 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,116 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:14:10,116 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:14:10,116 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2021-10-15 20:14:10,116 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:14:10,117 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:14:10,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:10,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:10,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:10,186 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:14:10,186 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 20:14:10,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:10,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:10,206 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 20:14:10,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:14:10,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:14:10,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:14:10,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:14:10,226 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 20:14:10,226 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 20:14:10,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-15 20:14:10,247 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:14:10,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:10,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:10,296 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:10,302 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 20:14:10,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-15 20:14:10,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:14:10,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:14:10,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:14:10,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:14:10,323 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 20:14:10,323 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 20:14:10,332 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:14:10,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:10,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:10,360 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:10,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-15 20:14:10,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 20:14:10,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:14:10,371 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:14:10,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:14:10,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:14:10,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:14:10,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:14:10,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:14:10,397 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 20:14:10,420 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-15 20:14:10,420 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 20:14:10,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:10,422 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:10,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-15 20:14:10,428 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 20:14:10,428 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 20:14:10,428 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 20:14:10,428 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 [] [2021-10-15 20:14:10,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:10,455 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 20:14:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:14:10,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:10,507 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:14:10,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:14:10,509 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-15 20:14:10,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:10,540 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 18 transitions. Complement of second has 5 states. [2021-10-15 20:14:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-15 20:14:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-15 20:14:10,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-15 20:14:10,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:10,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-10-15 20:14:10,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:10,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-15 20:14:10,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:10,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-10-15 20:14:10,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 20:14:10,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2021-10-15 20:14:10,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-15 20:14:10,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-10-15 20:14:10,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-10-15 20:14:10,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-15 20:14:10,546 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-15 20:14:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-10-15 20:14:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2021-10-15 20:14:10,547 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) [2021-10-15 20:14:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-10-15 20:14:10,547 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-15 20:14:10,548 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-15 20:14:10,548 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-15 20:14:10,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2021-10-15 20:14:10,548 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 20:14:10,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:14:10,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:14:10,549 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-10-15 20:14:10,549 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 20:14:10,549 INFO L791 eck$LassoCheckResult]: Stem: 122#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; 118#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 119#L13-2 assume !(main_~x~0 > main_~y~0); 123#L13-3 main_~x~0 := main_~x~0 - 2; 120#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 121#L13-2 [2021-10-15 20:14:10,549 INFO L793 eck$LassoCheckResult]: Loop: 121#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 121#L13-2 [2021-10-15 20:14:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:10,550 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2021-10-15 20:14:10,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:10,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034670036] [2021-10-15 20:14:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:10,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:14:10,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:14:10,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034670036] [2021-10-15 20:14:10,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034670036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:14:10,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:14:10,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:14:10,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426832014] [2021-10-15 20:14:10,655 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-15 20:14:10,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:10,656 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-10-15 20:14:10,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:14:10,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080207037] [2021-10-15 20:14:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:14:10,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:14:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:10,661 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:14:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:14:10,665 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:14:10,679 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:14:10,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:14:10,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:14:10,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:14:10,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-15 20:14:10,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:14:10,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:14:10,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2021-10-15 20:14:10,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:14:10,681 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:14:10,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:10,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:10,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:10,732 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:14:10,732 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-15 20:14:10,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:10,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:10,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-15 20:14:10,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:10,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:10,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-15 20:14:10,770 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-15 20:14:10,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:10,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:10,812 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:10,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-15 20:14:10,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-15 20:14:10,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:10,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:10,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:10,860 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:10,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-15 20:14:10,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-15 20:14:10,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-15 20:14:11,008 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-15 20:14:11,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:11,011 INFO L210 LassoAnalysis]: Preferences: [2021-10-15 20:14:11,011 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-15 20:14:11,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-15 20:14:11,012 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-15 20:14:11,012 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-15 20:14:11,012 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:11,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-15 20:14:11,012 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-15 20:14:11,012 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2021-10-15 20:14:11,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-15 20:14:11,012 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-15 20:14:11,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:11,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:11,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-15 20:14:11,076 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-15 20:14:11,076 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-15 20:14:11,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:11,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:11,078 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:11,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 20:14:11,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-15 20:14:11,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:14:11,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:14:11,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:14:11,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:14:11,122 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-15 20:14:11,123 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-15 20:14:11,137 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-15 20:14:11,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:11,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:11,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:11,182 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:11,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-15 20:14:11,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-15 20:14:11,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-15 20:14:11,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-15 20:14:11,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-15 20:14:11,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-15 20:14:11,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-15 20:14:11,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-15 20:14:11,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-15 20:14:11,217 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-15 20:14:11,224 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-15 20:14:11,224 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-15 20:14:11,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:14:11,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:14:11,262 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:14:11,275 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-15 20:14:11,276 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-15 20:14:11,276 INFO L513 LassoAnalysis]: Proved termination. [2021-10-15 20:14:11,276 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 [] [2021-10-15 20:14:11,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-15 20:14:11,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:11,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-15 20:14:11,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:11,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:14:11,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:11,395 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:14:11,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:14:11,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-15 20:14:11,396 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-15 20:14:11,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11 states and 15 transitions. Complement of second has 5 states. [2021-10-15 20:14:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-15 20:14:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-15 20:14:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-15 20:14:11,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-15 20:14:11,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:11,426 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 20:14:11,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:11,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:14:11,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:11,487 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:14:11,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:14:11,488 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-15 20:14:11,488 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-15 20:14:11,506 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11 states and 15 transitions. Complement of second has 5 states. [2021-10-15 20:14:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-15 20:14:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-15 20:14:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-15 20:14:11,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-15 20:14:11,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:11,508 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-15 20:14:11,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:14:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:11,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 20:14:11,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:14:11,565 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 20:14:11,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:14:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:14:11,566 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-15 20:14:11,567 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-15 20:14:11,581 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 9 states and 11 transitions. Complement of second has 4 states. [2021-10-15 20:14:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-15 20:14:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-15 20:14:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-15 20:14:11,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-15 20:14:11,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:11,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2021-10-15 20:14:11,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:11,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-15 20:14:11,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-15 20:14:11,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2021-10-15 20:14:11,585 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 20:14:11,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2021-10-15 20:14:11,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-15 20:14:11,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-15 20:14:11,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-15 20:14:11,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:14:11,587 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:14:11,587 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:14:11,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:14:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:14:11,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:14:11,592 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:14:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 20:14:11,596 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-15 20:14:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:14:11,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-15 20:14:11,596 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 20:14:11,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-15 20:14:11,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-15 20:14:11,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-15 20:14:11,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-15 20:14:11,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:14:11,597 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:14:11,598 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:14:11,598 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 20:14:11,598 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-15 20:14:11,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-15 20:14:11,598 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-15 20:14:11,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-15 20:14:11,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 08:14:11 BoogieIcfgContainer [2021-10-15 20:14:11,606 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-15 20:14:11,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:14:11,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:14:11,607 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:14:11,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:14:07" (3/4) ... [2021-10-15 20:14:11,611 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:14:11,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:14:11,613 INFO L168 Benchmark]: Toolchain (without parser) took 4867.28 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 54.0 MB in the beginning and 42.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2021-10-15 20:14:11,614 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:14:11,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.91 ms. Allocated memory is still 86.0 MB. Free memory was 53.8 MB in the beginning and 63.9 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:14:11,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 62.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:14:11,616 INFO L168 Benchmark]: Boogie Preprocessor took 24.57 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 61.5 MB in the end (delta: 973.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:14:11,617 INFO L168 Benchmark]: RCFGBuilder took 312.17 ms. Allocated memory is still 86.0 MB. Free memory was 61.5 MB in the beginning and 53.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:14:11,618 INFO L168 Benchmark]: BuchiAutomizer took 4128.23 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 53.4 MB in the beginning and 43.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:14:11,619 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 113.2 MB. Free memory was 43.1 MB in the beginning and 42.2 MB in the end (delta: 891.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:14:11,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.91 ms. Allocated memory is still 86.0 MB. Free memory was 53.8 MB in the beginning and 63.9 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 62.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.57 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 61.5 MB in the end (delta: 973.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 312.17 ms. Allocated memory is still 86.0 MB. Free memory was 61.5 MB in the beginning and 53.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4128.23 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 53.4 MB in the beginning and 43.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.96 ms. Allocated memory is still 113.2 MB. Free memory was 43.1 MB in the beginning and 42.2 MB in the end (delta: 891.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function x + -1 * y and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. 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 2. Automata minimization 10.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax200 hnf97 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf112 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 61ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-15 20:14:11,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-15 20:14:11,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-15 20:14:12,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f834db9-5097-48e1-9fd3-0d952631e43f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...