./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/2Nested-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/2Nested-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC --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 e73aa59ec9606428c1e0dd19193fa59dbe50e869 ........................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:21:27,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:21:27,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:21:27,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:21:27,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:21:27,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:21:27,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:21:27,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:21:27,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:21:27,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:21:27,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:21:27,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:21:27,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:21:27,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:21:27,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:21:27,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:21:27,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:21:27,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:21:27,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:21:27,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:21:27,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:21:27,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:21:27,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:21:27,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:21:27,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:21:27,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:21:27,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:21:27,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:21:27,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:21:27,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:21:27,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:21:27,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:21:27,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:21:27,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:21:27,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:21:27,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:21:27,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:21:27,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:21:27,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:21:27,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:21:27,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:21:27,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:21:27,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:21:27,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:21:27,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:21:27,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:21:27,543 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:21:27,544 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:21:27,544 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:21:27,544 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:21:27,545 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:21:27,545 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:21:27,545 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:21:27,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:21:27,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:21:27,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:21:27,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:21:27,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:21:27,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:21:27,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:21:27,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:21:27,548 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:21:27,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:21:27,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:21:27,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:21:27,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:21:27,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:21:27,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:21:27,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:21:27,551 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:21:27,551 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_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e73aa59ec9606428c1e0dd19193fa59dbe50e869 [2021-10-11 00:21:27,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:21:27,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:21:27,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:21:27,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:21:27,848 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:21:27,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted/2Nested-1.c [2021-10-11 00:21:27,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/data/2cd73b30b/8b816b587931450183ff7290d4cab68b/FLAG3ce83cebd [2021-10-11 00:21:28,406 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:21:28,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/sv-benchmarks/c/termination-crafted/2Nested-1.c [2021-10-11 00:21:28,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/data/2cd73b30b/8b816b587931450183ff7290d4cab68b/FLAG3ce83cebd [2021-10-11 00:21:28,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/data/2cd73b30b/8b816b587931450183ff7290d4cab68b [2021-10-11 00:21:28,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:21:28,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:21:28,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:28,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:21:28,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:21:28,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:28" (1/1) ... [2021-10-11 00:21:28,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ebb4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:28, skipping insertion in model container [2021-10-11 00:21:28,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:28" (1/1) ... [2021-10-11 00:21:28,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:21:28,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:21:29,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:29,096 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:21:29,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:29,120 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:21:29,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29 WrapperNode [2021-10-11 00:21:29,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:29,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:29,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:21:29,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:21:29,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:29,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:21:29,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:21:29,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:21:29,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... [2021-10-11 00:21:29,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:21:29,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:21:29,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:21:29,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:21:29,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:21:29,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:21:29,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:21:29,380 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:21:29,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:29 BoogieIcfgContainer [2021-10-11 00:21:29,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:21:29,383 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:21:29,383 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:21:29,386 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:21:29,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:21:29,388 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:21:28" (1/3) ... [2021-10-11 00:21:29,389 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44874898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:21:29, skipping insertion in model container [2021-10-11 00:21:29,389 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:21:29,389 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:29" (2/3) ... [2021-10-11 00:21:29,390 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@44874898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:21:29, skipping insertion in model container [2021-10-11 00:21:29,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:21:29,390 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:29" (3/3) ... [2021-10-11 00:21:29,392 INFO L389 chiAutomizerObserver]: Analyzing ICFG 2Nested-1.c [2021-10-11 00:21:29,436 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:21:29,436 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:21:29,436 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:21:29,436 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:21:29,436 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:21:29,437 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:21:29,437 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:21:29,437 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:21:29,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2021-10-11 00:21:29,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:21:29,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:21:29,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:21:29,473 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-11 00:21:29,474 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:21:29,474 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:21:29,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2021-10-11 00:21:29,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:21:29,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:21:29,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:21:29,476 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-11 00:21:29,476 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:21:29,484 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L21true assume !!(main_~x~0 <= 65534); 5#L22true assume !!(main_~y~0 <= 65534); 10#L24true assume !!(main_~y~0 >= -65534); 8#L25-2true [2021-10-11 00:21:29,484 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 + main_~y~0;main_~y~0 := main_~y~0 - 1; 8#L25-2true [2021-10-11 00:21:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2021-10-11 00:21:29,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:29,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101065328] [2021-10-11 00:21:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:29,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:29,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:29,602 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:21:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:29,604 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2021-10-11 00:21:29,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:29,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962522029] [2021-10-11 00:21:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:29,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:29,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:29,622 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:21:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:29,624 INFO L82 PathProgramCache]: Analyzing trace with hash 29742510, now seen corresponding path program 1 times [2021-10-11 00:21:29,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:29,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175947137] [2021-10-11 00:21:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:29,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:21:29,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:21:29,646 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:21:29,701 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:21:29,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:21:29,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:21:29,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:21:29,702 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:21:29,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:29,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:21:29,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:21:29,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2021-10-11 00:21:29,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:21:29,704 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:21:29,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:21:29,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:21:29,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:21:29,889 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:21:29,893 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:29,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:21:29,899 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:29,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:21:29,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:21:30,028 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:21:30,030 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:21:30,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:21:30,030 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:21:30,030 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:21:30,031 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:21:30,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:30,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:21:30,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:21:30,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2021-10-11 00:21:30,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:21:30,031 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:21:30,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:21:30,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:21:30,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:21:30,105 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:21:30,109 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:30,136 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:21:30,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:21:30,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:21:30,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:21:30,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:21:30,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:21:30,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:21:30,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:21:30,159 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:30,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:21:30,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:21:30,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:21:30,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:21:30,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:21:30,188 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:21:30,188 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:21:30,206 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:21:30,249 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:21:30,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:21:30,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:21:30,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:21:30,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:21:30,255 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:21:30,255 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:30,276 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-11 00:21:30,308 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:21:30,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:21:30,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:21:30,317 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:21:30,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:21:30,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:21:30,318 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-11 00:21:30,321 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-11 00:21:30,321 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:30,336 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:21:30,343 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:21:30,344 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531e6666-8099-4a87-82c6-3690b246c4c2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:21:30,348 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:21:30,348 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:21:30,348 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:21:30,349 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 2*ULTIMATE.start_main_~y~0 + 1 f1 = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-10-11 00:21:30,369 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:21:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:30,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:21:30,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:30,434 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:21:30,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:30,451 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:21:30,452 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 2 states. [2021-10-11 00:21:30,489 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 2 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2021-10-11 00:21:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:21:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:21:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-11 00:21:30,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 1 letters. [2021-10-11 00:21:30,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:21:30,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-11 00:21:30,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:21:30,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-11 00:21:30,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:21:30,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2021-10-11 00:21:30,499 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:21:30,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2021-10-11 00:21:30,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:21:30,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:21:30,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:21:30,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:21:30,504 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:21:30,504 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:21:30,504 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:21:30,504 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:21:30,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:21:30,504 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:21:30,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-11 00:21:30,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:21:30 BoogieIcfgContainer [2021-10-11 00:21:30,510 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:21:30,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:21:30,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:21:30,511 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:21:30,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:29" (3/4) ... [2021-10-11 00:21:30,515 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:21:30,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:21:30,517 INFO L168 Benchmark]: Toolchain (without parser) took 1614.65 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 80.4 MB in the beginning and 68.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:30,518 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:21:30,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.20 ms. Allocated memory is still 109.1 MB. Free memory was 80.1 MB in the beginning and 85.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:30,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.47 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:21:30,520 INFO L168 Benchmark]: Boogie Preprocessor took 16.57 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:30,521 INFO L168 Benchmark]: RCFGBuilder took 217.04 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 74.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:30,522 INFO L168 Benchmark]: BuchiAutomizer took 1127.27 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 74.0 MB in the beginning and 69.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:30,522 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 132.1 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:21:30,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.20 ms. Allocated memory is still 109.1 MB. Free memory was 80.1 MB in the beginning and 85.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.47 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.57 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 217.04 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 74.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1127.27 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 74.0 MB in the beginning and 69.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.39 ms. Allocated memory is still 132.1 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if 2 * y + 1 > 0 then 1 else 0), (if 2 * y + 1 > 0 then 2 * y + 1 else 2 * x + 1) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 12 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...