./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX --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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:49:41,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:49:41,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:49:41,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:49:41,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:49:41,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:49:41,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:49:41,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:49:41,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:49:41,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:49:41,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:49:41,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:49:41,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:49:41,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:49:41,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:49:41,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:49:41,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:49:41,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:49:41,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:49:41,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:49:41,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:49:41,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:49:41,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:49:41,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:49:41,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:49:41,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:49:41,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:49:41,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:49:41,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:49:41,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:49:41,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:49:41,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:49:41,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:49:41,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:49:41,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:49:41,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:49:41,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:49:41,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:49:41,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:49:41,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:49:41,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:49:41,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-09 09:49:41,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:49:41,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:49:41,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:49:41,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:49:41,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:49:41,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:49:41,726 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:49:41,726 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 09:49:41,726 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 09:49:41,726 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 09:49:41,728 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 09:49:41,728 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 09:49:41,728 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 09:49:41,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:49:41,729 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:49:41,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:49:41,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:49:41,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 09:49:41,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 09:49:41,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 09:49:41,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:49:41,730 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 09:49:41,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:49:41,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 09:49:41,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:49:41,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:49:41,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:49:41,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:49:41,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:49:41,733 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 09:49:41,733 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_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2021-11-09 09:49:42,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:49:42,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:49:42,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:49:42,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:49:42,030 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:49:42,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-numeric/twisted.c [2021-11-09 09:49:42,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/data/108fc5d82/4f7f6fd75994457da11af040154eaa3f/FLAG1e76794cf [2021-11-09 09:49:42,562 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:49:42,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/sv-benchmarks/c/termination-numeric/twisted.c [2021-11-09 09:49:42,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/data/108fc5d82/4f7f6fd75994457da11af040154eaa3f/FLAG1e76794cf [2021-11-09 09:49:42,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/data/108fc5d82/4f7f6fd75994457da11af040154eaa3f [2021-11-09 09:49:42,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:49:42,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:49:42,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:42,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:49:42,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:49:42,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:42" (1/1) ... [2021-11-09 09:49:42,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752e4160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:42, skipping insertion in model container [2021-11-09 09:49:42,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:42" (1/1) ... [2021-11-09 09:49:42,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:49:42,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:49:43,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:43,138 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:49:43,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:43,174 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:49:43,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43 WrapperNode [2021-11-09 09:49:43,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:43,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:49:43,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:49:43,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:49:43,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:49:43,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:49:43,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:49:43,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:49:43,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:49:43,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:49:43,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:49:43,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:49:43,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (1/1) ... [2021-11-09 09:49:43,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:43,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:43,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:43,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 09:49:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:49:43,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:49:43,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:49:43,446 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-09 09:49:43,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:43 BoogieIcfgContainer [2021-11-09 09:49:43,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:49:43,449 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 09:49:43,449 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 09:49:43,452 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 09:49:43,452 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:49:43,453 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 09:49:42" (1/3) ... [2021-11-09 09:49:43,454 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4dd5dd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:49:43, skipping insertion in model container [2021-11-09 09:49:43,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:49:43,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:43" (2/3) ... [2021-11-09 09:49:43,454 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4dd5dd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:49:43, skipping insertion in model container [2021-11-09 09:49:43,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:49:43,455 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:43" (3/3) ... [2021-11-09 09:49:43,456 INFO L389 chiAutomizerObserver]: Analyzing ICFG twisted.c [2021-11-09 09:49:43,501 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 09:49:43,501 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 09:49:43,502 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 09:49:43,502 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 09:49:43,502 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 09:49:43,502 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 09:49:43,502 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 09:49:43,502 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 09:49:43,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:43,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 09:49:43,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:49:43,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:49:43,541 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-09 09:49:43,541 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 09:49:43,542 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 09:49:43,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:43,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 09:49:43,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:49:43,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:49:43,544 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-09 09:49:43,544 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 09:49:43,551 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 6#L18true [2021-11-09 09:49:43,551 INFO L793 eck$LassoCheckResult]: Loop: 6#L18true assume !true; 8#L13true goto; 4#L16true assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 10#L15true assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 6#L18true [2021-11-09 09:49:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:43,558 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-11-09 09:49:43,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:43,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159596102] [2021-11-09 09:49:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:43,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,634 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,653 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1450986, now seen corresponding path program 1 times [2021-11-09 09:49:43,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:43,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031601363] [2021-11-09 09:49:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:43,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:43,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:43,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031601363] [2021-11-09 09:49:43,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031601363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:43,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:43,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-09 09:49:43,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090500358] [2021-11-09 09:49:43,698 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-09 09:49:43,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:49:43,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:49:43,717 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 1 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) [2021-11-09 09:49:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:43,723 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2021-11-09 09:49:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:49:43,725 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2021-11-09 09:49:43,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 09:49:43,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 7 states and 10 transitions. [2021-11-09 09:49:43,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-09 09:49:43,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-09 09:49:43,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-11-09 09:49:43,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:49:43,732 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-11-09 09:49:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-11-09 09:49:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-09 09:49:43,756 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) [2021-11-09 09:49:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-11-09 09:49:43,758 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-11-09 09:49:43,758 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-11-09 09:49:43,758 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-09 09:49:43,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-11-09 09:49:43,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 09:49:43,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:49:43,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:49:43,759 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-09 09:49:43,759 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-09 09:49:43,760 INFO L791 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 37#L18 [2021-11-09 09:49:43,760 INFO L793 eck$LassoCheckResult]: Loop: 37#L18 goto; 32#L9 assume !(f_~i~0 < f_~k); 33#L13 goto; 35#L16 assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 36#L15 assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 37#L18 [2021-11-09 09:49:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-11-09 09:49:43,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:43,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608067994] [2021-11-09 09:49:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:43,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,767 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,773 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 33506102, now seen corresponding path program 1 times [2021-11-09 09:49:43,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:43,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232071118] [2021-11-09 09:49:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:43,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,795 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,808 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 921009783, now seen corresponding path program 1 times [2021-11-09 09:49:43,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:43,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610818142] [2021-11-09 09:49:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:43,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,824 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:43,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:43,900 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:49:43,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:49:43,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:49:43,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:49:43,901 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 09:49:43,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:43,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:49:43,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:49:43,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2021-11-09 09:49:43,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:49:43,902 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:49:43,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:43,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:43,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:44,039 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:49:44,039 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 09:49:44,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:44,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:44,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:49:44,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:49:44,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-09 09:49:44,068 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 09:49:44,068 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post1=0} Honda state: {ULTIMATE.start_f_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 09:49:44,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:44,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:44,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:44,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-09 09:49:44,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:49:44,114 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:49:44,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:44,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:44,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:44,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 09:49:44,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:49:44,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-09 09:49:44,406 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 09:49:44,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:44,414 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:49:44,414 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:49:44,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:49:44,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:49:44,414 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 09:49:44,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:49:44,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:49:44,415 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2021-11-09 09:49:44,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:49:44,415 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:49:44,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:44,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:44,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:44,495 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:49:44,499 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 09:49:44,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:44,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:44,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-09 09:49:44,503 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 [2021-11-09 09:49:44,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:49:44,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:49:44,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:49:44,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:49:44,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:49:44,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:49:44,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:49:44,537 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 09:49:44,555 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 09:49:44,555 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 09:49:44,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:44,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:44,564 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 09:49:44,564 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 09:49:44,565 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 09:49:44,565 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0, ULTIMATE.start_f_~l) = -1*ULTIMATE.start_f_~j~0 + 1*ULTIMATE.start_f_~l Supporting invariants [] [2021-11-09 09:49:44,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-09 09:49:44,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:44,597 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 09:49:44,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:44,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:49:44,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:44,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:49:44,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:44,766 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 [2021-11-09 09:49:44,767 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:44,795 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 22 transitions. Complement of second has 4 states. [2021-11-09 09:49:44,795 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 [2021-11-09 09:49:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-11-09 09:49:44,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2021-11-09 09:49:44,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:49:44,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2021-11-09 09:49:44,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:49:44,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2021-11-09 09:49:44,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:49:44,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2021-11-09 09:49:44,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 09:49:44,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 17 transitions. [2021-11-09 09:49:44,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-09 09:49:44,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-11-09 09:49:44,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-11-09 09:49:44,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 09:49:44,804 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-09 09:49:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-11-09 09:49:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-11-09 09:49:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2021-11-09 09:49:44,806 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-11-09 09:49:44,806 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-11-09 09:49:44,807 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-09 09:49:44,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2021-11-09 09:49:44,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 09:49:44,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:49:44,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:49:44,808 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-09 09:49:44,808 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 09:49:44,808 INFO L791 eck$LassoCheckResult]: Stem: 101#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 102#L18 goto; 92#L9 [2021-11-09 09:49:44,808 INFO L793 eck$LassoCheckResult]: Loop: 92#L9 assume !!(f_~i~0 < f_~k);f_#t~post0 := f_~i~0;f_~i~0 := 1 + f_#t~post0;havoc f_#t~post0; 93#L8 assume 0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2); 92#L9 [2021-11-09 09:49:44,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:44,809 INFO L85 PathProgramCache]: Analyzing trace with hash 997, now seen corresponding path program 1 times [2021-11-09 09:49:44,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:44,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541915923] [2021-11-09 09:49:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:44,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:44,815 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:44,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-11-09 09:49:44,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:44,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971021349] [2021-11-09 09:49:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:44,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:44,831 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:44,845 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:44,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash 958440, now seen corresponding path program 1 times [2021-11-09 09:49:44,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:44,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856808849] [2021-11-09 09:49:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:44,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:44,862 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:44,870 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:44,894 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:49:44,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:49:44,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:49:44,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:49:44,895 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 09:49:44,895 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,895 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:49:44,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:49:44,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2021-11-09 09:49:44,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:49:44,896 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:49:44,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:44,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:44,972 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:49:44,972 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 09:49:44,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:44,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:44,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:44,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:49:44,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:49:44,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-09 09:49:44,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 09:49:44,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0=0} Honda state: {ULTIMATE.start_f_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 09:49:45,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:45,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:45,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:45,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:45,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 09:49:45,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:49:45,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-09 09:49:45,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:45,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:45,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:45,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:45,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 09:49:45,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 09:49:45,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-09 09:49:45,329 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 09:49:45,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:45,334 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 09:49:45,334 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 09:49:45,335 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 09:49:45,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 09:49:45,335 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 09:49:45,335 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:45,335 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 09:49:45,335 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 09:49:45,335 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2021-11-09 09:49:45,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 09:49:45,335 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 09:49:45,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:45,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 09:49:45,400 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 09:49:45,400 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 09:49:45,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:45,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:45,414 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 [2021-11-09 09:49:45,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 09:49:45,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 09:49:45,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 09:49:45,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 09:49:45,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 09:49:45,426 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 09:49:45,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 09:49:45,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-09 09:49:45,436 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 09:49:45,452 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-09 09:49:45,452 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-09 09:49:45,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:45,479 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:45,486 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 09:49:45,486 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 09:49:45,486 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 09:49:45,486 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~i~0, ULTIMATE.start_f_~k) = -1*ULTIMATE.start_f_~i~0 + 1*ULTIMATE.start_f_~k Supporting invariants [] [2021-11-09 09:49:45,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-09 09:49:45,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:45,511 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 09:49:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:45,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:49:45,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:45,544 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:49:45,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:45,586 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 [2021-11-09 09:49:45,587 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:45,615 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 31 transitions. Complement of second has 4 states. [2021-11-09 09:49:45,616 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 [2021-11-09 09:49:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-11-09 09:49:45,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-09 09:49:45,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:49:45,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-09 09:49:45,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:49:45,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-09 09:49:45,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 09:49:45,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 31 transitions. [2021-11-09 09:49:45,626 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-09 09:49:45,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2021-11-09 09:49:45,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-09 09:49:45,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-09 09:49:45,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-09 09:49:45,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:49:45,628 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 09:49:45,628 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 09:49:45,635 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 09:49:45,635 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-09 09:49:45,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-09 09:49:45,636 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-09 09:49:45,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-09 09:49:45,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 09:49:45 BoogieIcfgContainer [2021-11-09 09:49:45,642 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 09:49:45,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:49:45,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:49:45,643 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:49:45,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:43" (3/4) ... [2021-11-09 09:49:45,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 09:49:45,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:49:45,654 INFO L168 Benchmark]: Toolchain (without parser) took 2696.69 ms. Allocated memory is still 115.3 MB. Free memory was 82.2 MB in the beginning and 49.6 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:45,655 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:49:45,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.88 ms. Allocated memory is still 115.3 MB. Free memory was 82.0 MB in the beginning and 91.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:45,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.99 ms. Allocated memory is still 115.3 MB. Free memory was 91.9 MB in the beginning and 90.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:49:45,658 INFO L168 Benchmark]: Boogie Preprocessor took 15.19 ms. Allocated memory is still 115.3 MB. Free memory was 90.3 MB in the beginning and 89.5 MB in the end (delta: 821.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:49:45,658 INFO L168 Benchmark]: RCFGBuilder took 213.64 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 81.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:45,659 INFO L168 Benchmark]: BuchiAutomizer took 2193.09 ms. Allocated memory is still 115.3 MB. Free memory was 80.7 MB in the beginning and 49.6 MB in the end (delta: 31.1 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:45,662 INFO L168 Benchmark]: Witness Printer took 5.15 ms. Allocated memory is still 115.3 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:49:45,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 219.88 ms. Allocated memory is still 115.3 MB. Free memory was 82.0 MB in the beginning and 91.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.99 ms. Allocated memory is still 115.3 MB. Free memory was 91.9 MB in the beginning and 90.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.19 ms. Allocated memory is still 115.3 MB. Free memory was 90.3 MB in the beginning and 89.5 MB in the end (delta: 821.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 213.64 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 81.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2193.09 ms. Allocated memory is still 115.3 MB. Free memory was 80.7 MB in the beginning and 49.6 MB in the end (delta: 31.1 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.15 ms. Allocated memory is still 115.3 MB. Free memory is still 49.6 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function l + -1 * j and consists of 3 locations. One deterministic module has affine ranking function k + -1 * i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 11 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp77 ukn100 mio100 lsp100 div400 bol100 ite100 ukn100 eq145 hnf48 smp86 dnf100 smp100 tf106 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 65ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-09 09:49:45,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:45,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:46,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcbb8f1d-ca9f-4904-99c1-aa0833ff0dff/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE