./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G --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 b152d0a77c0a827c56e67a020428723a5ece98968c26b23e643be1f19b0bbb84 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:00:36,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:00:36,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:00:36,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:00:36,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:00:36,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:00:36,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:00:36,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:00:36,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:00:36,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:00:36,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:00:36,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:00:36,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:00:36,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:00:36,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:00:36,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:00:36,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:00:36,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:00:36,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:00:36,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:00:36,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:00:36,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:00:36,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:00:36,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:00:36,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:00:36,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:00:36,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:00:36,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:00:36,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:00:36,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:00:36,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:00:36,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:00:36,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:00:36,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:00:36,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:00:36,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:00:36,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:00:36,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:00:36,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:00:36,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:00:36,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:00:36,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-23 13:00:36,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:00:36,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:00:36,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:00:36,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:00:36,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:00:36,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:00:36,511 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:00:36,511 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:00:36,511 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:00:36,511 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:00:36,513 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:00:36,513 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:00:36,513 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:00:36,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:00:36,514 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:00:36,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:00:36,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:00:36,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:00:36,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:00:36,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:00:36,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:00:36,515 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:00:36,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:00:36,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:00:36,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:00:36,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:00:36,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:00:36,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:00:36,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:00:36,518 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:00:36,518 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_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b152d0a77c0a827c56e67a020428723a5ece98968c26b23e643be1f19b0bbb84 [2021-11-23 13:00:36,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:00:36,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:00:36,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:00:36,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:00:36,829 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:00:36,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2021-11-23 13:00:36,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/data/da23054d0/8eda5abf4bad421aa70882bdc848cb7e/FLAG763991ba1 [2021-11-23 13:00:37,390 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:00:37,391 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2021-11-23 13:00:37,399 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/data/da23054d0/8eda5abf4bad421aa70882bdc848cb7e/FLAG763991ba1 [2021-11-23 13:00:37,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/data/da23054d0/8eda5abf4bad421aa70882bdc848cb7e [2021-11-23 13:00:37,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:00:37,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:00:37,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:00:37,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:00:37,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:00:37,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:00:37" (1/1) ... [2021-11-23 13:00:37,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782a172e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:37, skipping insertion in model container [2021-11-23 13:00:37,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:00:37" (1/1) ... [2021-11-23 13:00:37,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:00:37,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:00:37,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:00:37,997 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:00:38,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:00:38,035 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:00:38,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38 WrapperNode [2021-11-23 13:00:38,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:00:38,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:00:38,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:00:38,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:00:38,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,071 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-11-23 13:00:38,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:00:38,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:00:38,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:00:38,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:00:38,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:00:38,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:00:38,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:00:38,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:00:38,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (1/1) ... [2021-11-23 13:00:38,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:38,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:38,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:38,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:00:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:00:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:00:38,262 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:00:38,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:00:38,360 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:00:38,367 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:00:38,367 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 13:00:38,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:00:38 BoogieIcfgContainer [2021-11-23 13:00:38,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:00:38,370 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:00:38,370 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:00:38,379 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:00:38,380 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:00:38,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:00:37" (1/3) ... [2021-11-23 13:00:38,382 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@522bff74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:00:38, skipping insertion in model container [2021-11-23 13:00:38,382 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:00:38,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:00:38" (2/3) ... [2021-11-23 13:00:38,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@522bff74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:00:38, skipping insertion in model container [2021-11-23 13:00:38,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:00:38,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:00:38" (3/3) ... [2021-11-23 13:00:38,385 INFO L388 chiAutomizerObserver]: Analyzing ICFG c.01-no-inv.c [2021-11-23 13:00:38,453 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:00:38,453 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:00:38,454 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:00:38,454 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:00:38,454 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:00:38,454 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:00:38,454 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:00:38,455 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:00:38,473 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:38,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-23 13:00:38,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:00:38,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:00:38,508 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:00:38,508 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:00:38,508 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:00:38,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:38,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-23 13:00:38,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:00:38,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:00:38,511 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:00:38,511 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:00:38,518 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 5#L10-2true [2021-11-23 13:00:38,520 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 3#L12-2true assume !(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824); 8#L12-3true main_~x~0#1 := main_~x~0#1 - 1; 5#L10-2true [2021-11-23 13:00:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-23 13:00:38,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:38,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680897420] [2021-11-23 13:00:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:38,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:38,623 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:38,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-11-23 13:00:38,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:38,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54335204] [2021-11-23 13:00:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:38,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:38,688 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:38,706 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2021-11-23 13:00:38,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:38,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169540381] [2021-11-23 13:00:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:38,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:38,731 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:38,746 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:38,907 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:00:38,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:00:38,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:00:38,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:00:38,908 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:00:38,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:38,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:00:38,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:00:38,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2021-11-23 13:00:38,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:00:38,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:00:38,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:38,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:38,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:39,081 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:00:39,082 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:00:39,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:39,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:39,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:39,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:39,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:00:39,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:00:39,119 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: [] [2021-11-23 13:00:39,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-23 13:00:39,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:39,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:39,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:39,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:39,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:00:39,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:00:39,168 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: [] [2021-11-23 13:00:39,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:39,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:39,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:39,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:39,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:39,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:00:39,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:39,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:39,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:39,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:00:39,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:00:39,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:39,306 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:00:39,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:39,314 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:00:39,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:00:39,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:00:39,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:00:39,315 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:00:39,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:00:39,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:00:39,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2021-11-23 13:00:39,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:00:39,315 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:00:39,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:39,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:39,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:39,386 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:00:39,391 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:00:39,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:39,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:39,403 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 [2021-11-23 13:00:39,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:00:39,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:00:39,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:00:39,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:00:39,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:00:39,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:00:39,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:00:39,459 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:00:39,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:39,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:39,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:39,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:00:39,492 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 [2021-11-23 13:00:39,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:00:39,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:00:39,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:00:39,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:00:39,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:00:39,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:00:39,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:00:39,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:00:39,543 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:00:39,543 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:00:39,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:39,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:39,554 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:00:39,554 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:00:39,554 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:00:39,555 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2021-11-23 13:00:39,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:00:39,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:39,591 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:00:39,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:39,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:00:39,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:39,673 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:00:39,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:39,805 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 [2021-11-23 13:00:39,807 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:39,856 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2021-11-23 13:00:39,858 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 [2021-11-23 13:00:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-11-23 13:00:39,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2021-11-23 13:00:39,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:39,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-23 13:00:39,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:39,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2021-11-23 13:00:39,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:39,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-11-23 13:00:39,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 13:00:39,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-11-23 13:00:39,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-23 13:00:39,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-11-23 13:00:39,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-11-23 13:00:39,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:00:39,878 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-23 13:00:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-11-23 13:00:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-11-23 13:00:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-11-23 13:00:39,900 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-11-23 13:00:39,900 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-11-23 13:00:39,900 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:00:39,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-11-23 13:00:39,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 13:00:39,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:00:39,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:00:39,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 13:00:39,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-23 13:00:39,901 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 78#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 75#L12-2 [2021-11-23 13:00:39,902 INFO L793 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 75#L12-2 [2021-11-23 13:00:39,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:39,902 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-23 13:00:39,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:39,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679186764] [2021-11-23 13:00:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:39,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:39,908 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:39,912 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-11-23 13:00:39,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:39,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843083122] [2021-11-23 13:00:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:39,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:39,918 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:39,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-11-23 13:00:39,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:39,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066432122] [2021-11-23 13:00:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:39,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:39,930 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:39,936 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:39,981 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:00:39,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:00:39,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:00:39,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:00:39,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:00:39,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:39,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:00:39,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:00:39,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2021-11-23 13:00:39,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:00:39,982 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:00:39,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:39,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,107 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:00:40,107 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:00:40,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:40,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:40,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:40,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:40,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:40,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:00:40,147 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:00:40,148 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: [] [2021-11-23 13:00:40,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:40,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:40,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:40,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:40,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 13:00:40,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:40,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:40,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-11-23 13:00:40,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:40,234 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:40,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 13:00:40,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:00:40,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:40,325 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:00:40,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:40,328 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:00:40,328 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:00:40,329 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:00:40,329 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:00:40,329 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:00:40,329 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:40,329 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:00:40,329 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:00:40,329 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2021-11-23 13:00:40,329 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:00:40,329 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:00:40,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:40,470 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:00:40,470 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:00:40,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:40,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:40,473 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:40,484 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 [2021-11-23 13:00:40,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:00:40,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:00:40,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:00:40,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:00:40,503 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:00:40,506 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:00:40,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-23 13:00:40,519 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:00:40,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:40,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:40,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:40,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:40,570 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 [2021-11-23 13:00:40,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:00:40,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:00:40,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:00:40,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:00:40,597 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:00:40,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:00:40,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-23 13:00:40,623 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:00:40,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:00:40,631 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:00:40,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:40,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:40,634 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:40,641 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:00:40,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-23 13:00:40,680 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-11-23 13:00:40,680 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:00:40,680 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2021-11-23 13:00:40,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:40,726 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-11-23 13:00:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:40,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:00:40,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:40,778 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:00:40,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:40,782 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 [2021-11-23 13:00:40,782 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) 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) [2021-11-23 13:00:40,826 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) 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 14 states and 19 transitions. Complement of second has 5 states. [2021-11-23 13:00:40,826 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 [2021-11-23 13:00:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) 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) [2021-11-23 13:00:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-11-23 13:00:40,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2021-11-23 13:00:40,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:40,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2021-11-23 13:00:40,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:40,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-11-23 13:00:40,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:40,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-11-23 13:00:40,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 13:00:40,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2021-11-23 13:00:40,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-23 13:00:40,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-11-23 13:00:40,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-11-23 13:00:40,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:00:40,844 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-11-23 13:00:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-11-23 13:00:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2021-11-23 13:00:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-11-23 13:00:40,846 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-11-23 13:00:40,846 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-11-23 13:00:40,846 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 13:00:40,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-11-23 13:00:40,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 13:00:40,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:00:40,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:00:40,847 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-11-23 13:00:40,847 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-23 13:00:40,848 INFO L791 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 143#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 140#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 138#L12-2 assume !(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824); 139#L12-3 main_~x~0#1 := main_~x~0#1 - 1; 141#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 137#L12-2 [2021-11-23 13:00:40,848 INFO L793 eck$LassoCheckResult]: Loop: 137#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 137#L12-2 [2021-11-23 13:00:40,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:40,849 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2021-11-23 13:00:40,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:40,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199397234] [2021-11-23 13:00:40,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:40,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:40,857 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:40,863 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:40,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-11-23 13:00:40,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:40,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395424396] [2021-11-23 13:00:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:40,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:40,869 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:40,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2021-11-23 13:00:40,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:40,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555901939] [2021-11-23 13:00:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:40,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:40,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:40,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:00:40,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555901939] [2021-11-23 13:00:40,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555901939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:00:40,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458468203] [2021-11-23 13:00:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:40,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:00:41,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:41,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:41,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:00:41,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 13:00:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:41,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:00:41,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:41,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:00:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:41,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458468203] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:00:41,239 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:00:41,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-23 13:00:41,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702794665] [2021-11-23 13:00:41,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:00:41,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:00:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:00:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:00:41,272 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:00:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:00:41,409 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-11-23 13:00:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:00:41,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2021-11-23 13:00:41,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 13:00:41,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 11 states and 13 transitions. [2021-11-23 13:00:41,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-23 13:00:41,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-11-23 13:00:41,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2021-11-23 13:00:41,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:00:41,424 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-23 13:00:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2021-11-23 13:00:41,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2021-11-23 13:00:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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) [2021-11-23 13:00:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-23 13:00:41,427 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-23 13:00:41,428 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-23 13:00:41,428 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 13:00:41,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2021-11-23 13:00:41,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 13:00:41,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:00:41,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:00:41,429 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-11-23 13:00:41,429 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-23 13:00:41,429 INFO L791 eck$LassoCheckResult]: Stem: 231#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 229#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 227#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 228#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 234#L12-2 assume !(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824); 233#L12-3 main_~x~0#1 := main_~x~0#1 - 1; 230#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 226#L12-2 [2021-11-23 13:00:41,430 INFO L793 eck$LassoCheckResult]: Loop: 226#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 226#L12-2 [2021-11-23 13:00:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash 301557853, now seen corresponding path program 2 times [2021-11-23 13:00:41,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518408655] [2021-11-23 13:00:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:41,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:41,441 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:41,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 3 times [2021-11-23 13:00:41,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:41,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545129126] [2021-11-23 13:00:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:41,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:41,459 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:41,463 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:41,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash 758358871, now seen corresponding path program 3 times [2021-11-23 13:00:41,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:00:41,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736477506] [2021-11-23 13:00:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:00:41,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:00:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:41,477 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:00:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:00:41,493 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:00:41,607 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:00:41,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:00:41,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:00:41,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:00:41,607 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:00:41,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:41,608 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:00:41,608 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:00:41,608 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration4_Lasso [2021-11-23 13:00:41,608 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:00:41,608 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:00:41,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,717 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:00:41,717 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:00:41,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:41,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:41,718 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:41,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:41,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:41,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-23 13:00:41,763 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:00:41,763 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=0} Honda state: {ULTIMATE.start_main_~c~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:00:41,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:41,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:41,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:41,799 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:41,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-23 13:00:41,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:41,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:41,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:00:41,809 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:00:41,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-11-23 13:00:41,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:41,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:41,833 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:41,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-23 13:00:41,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:00:41,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:41,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:41,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:41,884 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:41,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-23 13:00:41,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:00:41,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:00:41,936 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:00:41,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:41,941 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:00:41,941 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:00:41,941 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:00:41,942 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:00:41,942 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:00:41,942 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:41,942 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:00:41,942 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:00:41,942 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration4_Lasso [2021-11-23 13:00:41,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:00:41,942 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:00:41,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:41,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:00:42,052 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:00:42,052 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:00:42,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:42,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:42,054 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:42,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-23 13:00:42,075 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 [2021-11-23 13:00:42,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:00:42,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:00:42,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:00:42,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:00:42,088 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:00:42,088 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:00:42,107 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:00:42,145 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-11-23 13:00:42,145 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2021-11-23 13:00:42,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:00:42,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:00:42,149 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:00:42,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-23 13:00:42,162 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:00:42,188 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-11-23 13:00:42,189 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:00:42,189 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2021-11-23 13:00:42,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:42,225 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-11-23 13:00:42,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:42,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:42,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:00:42,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:42,334 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:00:42,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:42,335 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 [2021-11-23 13:00:42,336 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 13:00:42,363 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 20 transitions. Complement of second has 5 states. [2021-11-23 13:00:42,364 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 [2021-11-23 13:00:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 13:00:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-11-23 13:00:42,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-23 13:00:42,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:42,366 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:00:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:42,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:00:42,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:42,412 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:00:42,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:42,413 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 [2021-11-23 13:00:42,413 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 13:00:42,444 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 20 transitions. Complement of second has 5 states. [2021-11-23 13:00:42,445 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 [2021-11-23 13:00:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 13:00:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-11-23 13:00:42,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-23 13:00:42,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:42,450 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:00:42,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:00:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:42,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:00:42,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:00:42,502 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:00:42,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:00:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:00:42,507 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 [2021-11-23 13:00:42,507 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 13:00:42,535 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 14 transitions. Complement of second has 4 states. [2021-11-23 13:00:42,535 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 [2021-11-23 13:00:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 13:00:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-23 13:00:42,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-23 13:00:42,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:42,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2021-11-23 13:00:42,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:42,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-23 13:00:42,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:00:42,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2021-11-23 13:00:42,545 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:00:42,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2021-11-23 13:00:42,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:00:42,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:00:42,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:00:42,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:00:42,546 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:00:42,546 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:00:42,546 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:00:42,546 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-23 13:00:42,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:00:42,546 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:00:42,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-23 13:00:42,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:00:42 BoogieIcfgContainer [2021-11-23 13:00:42,555 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:00:42,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:00:42,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:00:42,556 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:00:42,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:00:38" (3/4) ... [2021-11-23 13:00:42,563 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:00:42,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:00:42,565 INFO L158 Benchmark]: Toolchain (without parser) took 4804.67ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 47.4MB in the beginning and 67.6MB in the end (delta: -20.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:00:42,565 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:00:42,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.99ms. Allocated memory is still 88.1MB. Free memory was 47.2MB in the beginning and 65.4MB in the end (delta: -18.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:00:42,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.98ms. Allocated memory is still 88.1MB. Free memory was 65.4MB in the beginning and 64.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:00:42,575 INFO L158 Benchmark]: Boogie Preprocessor took 20.33ms. Allocated memory is still 88.1MB. Free memory was 64.2MB in the beginning and 63.4MB in the end (delta: 824.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:00:42,575 INFO L158 Benchmark]: RCFGBuilder took 275.75ms. Allocated memory is still 88.1MB. Free memory was 63.2MB in the beginning and 55.1MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:00:42,575 INFO L158 Benchmark]: BuchiAutomizer took 4185.60ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 55.1MB in the beginning and 68.1MB in the end (delta: -13.0MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-11-23 13:00:42,576 INFO L158 Benchmark]: Witness Printer took 7.59ms. Allocated memory is still 107.0MB. Free memory was 68.1MB in the beginning and 67.6MB in the end (delta: 513.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:00:42,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.99ms. Allocated memory is still 88.1MB. Free memory was 47.2MB in the beginning and 65.4MB in the end (delta: -18.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.98ms. Allocated memory is still 88.1MB. Free memory was 65.4MB in the beginning and 64.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.33ms. Allocated memory is still 88.1MB. Free memory was 64.2MB in the beginning and 63.4MB in the end (delta: 824.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 275.75ms. Allocated memory is still 88.1MB. Free memory was 63.2MB in the beginning and 55.1MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4185.60ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 55.1MB in the beginning and 68.1MB in the end (delta: -13.0MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Witness Printer took 7.59ms. Allocated memory is still 107.0MB. Free memory was 68.1MB in the beginning and 67.6MB in the end (delta: 513.5kB). There was no memory consumed. Max. memory is 16.1GB. * 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 2147483647 + -2 * y and consists of 3 locations. One nondeterministic module has affine ranking function 2147483647 + -2 * y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 31 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax159 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf102 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 67ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-23 13:00:42,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:00:42,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c08f21e4-887c-4db7-9e85-ff671972f57d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE