./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b152d0a77c0a827c56e67a020428723a5ece98968c26b23e643be1f19b0bbb84 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:49:30,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:49:30,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:49:30,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:49:30,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:49:30,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:49:30,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:49:30,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:49:30,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:49:30,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:49:30,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:49:30,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:49:30,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:49:30,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:49:30,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:49:30,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:49:30,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:49:30,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:49:30,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:49:30,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:49:30,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:49:30,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:49:30,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:49:30,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:49:30,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:49:30,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:49:30,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:49:30,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:49:30,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:49:30,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:49:30,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:49:30,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:49:30,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:49:30,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:49:30,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:49:30,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:49:30,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:49:30,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:49:30,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:49:30,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:49:30,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:49:30,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-07 00:49:30,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:49:30,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:49:30,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:49:30,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:49:30,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:49:30,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:49:30,645 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:49:30,645 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 00:49:30,645 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 00:49:30,645 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 00:49:30,646 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 00:49:30,646 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 00:49:30,646 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 00:49:30,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:49:30,646 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:49:30,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:49:30,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:49:30,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 00:49:30,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 00:49:30,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 00:49:30,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:49:30,647 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 00:49:30,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:49:30,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 00:49:30,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:49:30,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:49:30,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:49:30,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:49:30,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:49:30,650 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 00:49:30,650 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_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b152d0a77c0a827c56e67a020428723a5ece98968c26b23e643be1f19b0bbb84 [2021-12-07 00:49:30,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:49:30,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:49:30,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:49:30,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:49:30,856 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:49:30,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2021-12-07 00:49:30,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/data/0d3be9564/b18f989c23e94d76a83ae73847e18369/FLAG88e6d769e [2021-12-07 00:49:31,280 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:49:31,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2021-12-07 00:49:31,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/data/0d3be9564/b18f989c23e94d76a83ae73847e18369/FLAG88e6d769e [2021-12-07 00:49:31,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/data/0d3be9564/b18f989c23e94d76a83ae73847e18369 [2021-12-07 00:49:31,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:49:31,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:49:31,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:49:31,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:49:31,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:49:31,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e939607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31, skipping insertion in model container [2021-12-07 00:49:31,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:49:31,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:49:31,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:49:31,429 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:49:31,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:49:31,446 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:49:31,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31 WrapperNode [2021-12-07 00:49:31,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:49:31,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:49:31,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:49:31,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:49:31,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,470 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-07 00:49:31,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:49:31,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:49:31,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:49:31,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:49:31,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:49:31,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:49:31,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:49:31,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:49:31,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (1/1) ... [2021-12-07 00:49:31,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:31,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:31,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:31,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 00:49:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:49:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:49:31,598 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:49:31,599 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:49:31,652 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:49:31,658 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:49:31,659 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:49:31,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:31 BoogieIcfgContainer [2021-12-07 00:49:31,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:49:31,662 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 00:49:31,662 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 00:49:31,665 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 00:49:31,665 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:49:31,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:49:31" (1/3) ... [2021-12-07 00:49:31,667 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@322df273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:49:31, skipping insertion in model container [2021-12-07 00:49:31,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:49:31,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:31" (2/3) ... [2021-12-07 00:49:31,667 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@322df273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:49:31, skipping insertion in model container [2021-12-07 00:49:31,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:49:31,668 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:31" (3/3) ... [2021-12-07 00:49:31,669 INFO L388 chiAutomizerObserver]: Analyzing ICFG c.01-no-inv.c [2021-12-07 00:49:31,711 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 00:49:31,711 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 00:49:31,711 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 00:49:31,711 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 00:49:31,711 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 00:49:31,711 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 00:49:31,711 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 00:49:31,712 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 00:49:31,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:31,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-07 00:49:31,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:49:31,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:49:31,742 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:49:31,742 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:49:31,742 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 00:49:31,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:31,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-07 00:49:31,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:49:31,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:49:31,744 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:49:31,745 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:49:31,751 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 5#L10-2true [2021-12-07 00:49:31,751 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 3#L12-2true assume !(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824); 8#L12-3true main_~x~0#1 := main_~x~0#1 - 1; 5#L10-2true [2021-12-07 00:49:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:31,757 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-07 00:49:31,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:31,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374555394] [2021-12-07 00:49:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:31,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:31,833 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:31,846 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-12-07 00:49:31,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806649243] [2021-12-07 00:49:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:31,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:31,860 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:31,865 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2021-12-07 00:49:31,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:31,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875387577] [2021-12-07 00:49:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:31,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:31,873 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:31,879 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:31,949 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:49:31,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:49:31,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:49:31,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:49:31,950 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:49:31,950 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:31,950 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:49:31,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:49:31,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2021-12-07 00:49:31,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:49:31,950 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:49:31,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:31,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:31,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,031 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:49:32,032 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:49:32,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 00:49:32,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:32,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:32,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:49:32,057 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:49:32,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:49:32,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 00:49:32,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:32,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:32,103 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:49:32,103 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:49:32,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-07 00:49:32,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 00:49:32,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:32,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:32,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 00:49:32,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,166 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 00:49:32,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:49:32,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:32,205 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:49:32,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 00:49:32,207 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:49:32,207 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:49:32,207 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:49:32,207 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:49:32,207 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:49:32,208 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,208 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:49:32,208 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:49:32,208 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2021-12-07 00:49:32,208 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:49:32,208 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:49:32,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,258 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:49:32,262 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:49:32,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 00:49:32,287 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 [2021-12-07 00:49:32,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:49:32,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:49:32,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:49:32,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:49:32,301 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:49:32,302 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:49:32,305 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:49:32,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-07 00:49:32,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 00:49:32,327 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 [2021-12-07 00:49:32,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:49:32,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:49:32,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:49:32,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:49:32,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:49:32,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:49:32,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:49:32,339 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:49:32,343 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:49:32,343 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:49:32,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 00:49:32,347 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:49:32,347 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:49:32,347 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:49:32,347 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2021-12-07 00:49:32,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-07 00:49:32,368 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:49:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:32,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:49:32,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:32,400 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:49:32,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:32,453 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 [2021-12-07 00:49:32,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:32,486 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2021-12-07 00:49:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:49:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-12-07 00:49:32,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-07 00:49:32,492 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:32,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-07 00:49:32,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:32,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-07 00:49:32,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:32,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-12-07 00:49:32,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:49:32,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-12-07 00:49:32,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-07 00:49:32,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-07 00:49:32,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-12-07 00:49:32,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:49:32,499 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-07 00:49:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-12-07 00:49:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-12-07 00:49:32,515 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) [2021-12-07 00:49:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-12-07 00:49:32,516 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-07 00:49:32,516 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-07 00:49:32,516 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 00:49:32,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-12-07 00:49:32,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:49:32,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:49:32,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:49:32,517 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-07 00:49:32,517 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-07 00:49:32,517 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 78#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 75#L12-2 [2021-12-07 00:49:32,517 INFO L793 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 75#L12-2 [2021-12-07 00:49:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-07 00:49:32,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:32,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793820788] [2021-12-07 00:49:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:32,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,521 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-07 00:49:32,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:32,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588053948] [2021-12-07 00:49:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:32,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,527 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,530 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:32,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-12-07 00:49:32,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:32,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005015820] [2021-12-07 00:49:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:32,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,535 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,540 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:32,564 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:49:32,564 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:49:32,564 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:49:32,564 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:49:32,564 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:49:32,564 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,565 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:49:32,565 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:49:32,565 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2021-12-07 00:49:32,565 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:49:32,565 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:49:32,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,620 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:49:32,620 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:49:32,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 00:49:32,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:32,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:32,636 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:49:32,636 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:49:32,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-07 00:49:32,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-07 00:49:32,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:32,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:32,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-07 00:49:32,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,689 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-07 00:49:32,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:49:32,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:32,723 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:49:32,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-07 00:49:32,726 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:49:32,726 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:49:32,726 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:49:32,726 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:49:32,726 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:49:32,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,726 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:49:32,726 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:49:32,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2021-12-07 00:49:32,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:49:32,726 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:49:32,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:32,778 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:49:32,778 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:49:32,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,779 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-07 00:49:32,817 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 [2021-12-07 00:49:32,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:49:32,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:49:32,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:49:32,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:49:32,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:49:32,827 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:49:32,831 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:49:32,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-07 00:49:32,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-07 00:49:32,852 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 [2021-12-07 00:49:32,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:49:32,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:49:32,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:49:32,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:49:32,865 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:49:32,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:49:32,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:49:32,881 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:49:32,881 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:49:32,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:32,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:32,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:32,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-07 00:49:32,884 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:49:32,892 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-12-07 00:49:32,892 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:49:32,892 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2021-12-07 00:49:32,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-07 00:49:32,913 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-12-07 00:49:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:32,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:49:32,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:32,936 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:49:32,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:32,937 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 [2021-12-07 00:49:32,937 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:32,952 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2021-12-07 00:49:32,952 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 [2021-12-07 00:49:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-07 00:49:32,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-07 00:49:32,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:32,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-07 00:49:32,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:32,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-07 00:49:32,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:32,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-12-07 00:49:32,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:49:32,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2021-12-07 00:49:32,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-07 00:49:32,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-12-07 00:49:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-12-07 00:49:32,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:49:32,956 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-12-07 00:49:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-12-07 00:49:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2021-12-07 00:49:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-12-07 00:49:32,957 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-07 00:49:32,957 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-07 00:49:32,957 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 00:49:32,957 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-12-07 00:49:32,957 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:49:32,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:49:32,957 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:49:32,958 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-12-07 00:49:32,958 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-07 00:49:32,958 INFO L791 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 143#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 140#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 138#L12-2 assume !(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824); 139#L12-3 main_~x~0#1 := main_~x~0#1 - 1; 141#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 137#L12-2 [2021-12-07 00:49:32,958 INFO L793 eck$LassoCheckResult]: Loop: 137#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 137#L12-2 [2021-12-07 00:49:32,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2021-12-07 00:49:32,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:32,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657819217] [2021-12-07 00:49:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:32,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,965 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,970 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-12-07 00:49:32,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:32,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031615630] [2021-12-07 00:49:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:32,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,975 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:32,978 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:32,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:32,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2021-12-07 00:49:32,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:32,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064626825] [2021-12-07 00:49:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:32,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-07 00:49:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:33,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064626825] [2021-12-07 00:49:33,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064626825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117661939] [2021-12-07 00:49:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:33,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:33,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:33,033 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:33,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 00:49:33,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-07 00:49:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:49:33,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:33,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:33,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117661939] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:49:33,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:49:33,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-07 00:49:33,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590282784] [2021-12-07 00:49:33,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:33,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:49:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:49:33,145 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:33,202 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-12-07 00:49:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:49:33,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2021-12-07 00:49:33,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:49:33,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 11 states and 13 transitions. [2021-12-07 00:49:33,204 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-07 00:49:33,204 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-07 00:49:33,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2021-12-07 00:49:33,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:49:33,204 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-12-07 00:49:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2021-12-07 00:49:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2021-12-07 00:49:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-12-07 00:49:33,206 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-12-07 00:49:33,206 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-12-07 00:49:33,206 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 00:49:33,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2021-12-07 00:49:33,206 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:49:33,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:49:33,206 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:49:33,206 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-12-07 00:49:33,206 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-07 00:49:33,207 INFO L791 eck$LassoCheckResult]: Stem: 231#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 229#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 227#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 228#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 234#L12-2 assume !(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824); 233#L12-3 main_~x~0#1 := main_~x~0#1 - 1; 230#L10-2 assume !!(main_~x~0#1 >= 0);main_~y~0#1 := 1; 226#L12-2 [2021-12-07 00:49:33,207 INFO L793 eck$LassoCheckResult]: Loop: 226#L12-2 assume !!(main_~x~0#1 > main_~y~0#1 && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 226#L12-2 [2021-12-07 00:49:33,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash 301557853, now seen corresponding path program 2 times [2021-12-07 00:49:33,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:33,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048960843] [2021-12-07 00:49:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:33,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:33,214 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:33,220 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:33,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 3 times [2021-12-07 00:49:33,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:33,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842976817] [2021-12-07 00:49:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:33,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:33,225 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:33,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash 758358871, now seen corresponding path program 3 times [2021-12-07 00:49:33,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:33,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205813862] [2021-12-07 00:49:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:33,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:33,234 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:49:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:49:33,242 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:49:33,289 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:49:33,289 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:49:33,289 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:49:33,289 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:49:33,289 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:49:33,289 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,289 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:49:33,289 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:49:33,289 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration4_Lasso [2021-12-07 00:49:33,289 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:49:33,289 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:49:33,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,328 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:49:33,328 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:49:33,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:33,329 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:33,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-07 00:49:33,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:33,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:33,338 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:49:33,338 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=0} Honda state: {ULTIMATE.start_main_~c~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:49:33,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-07 00:49:33,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:33,357 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:33,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-07 00:49:33,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:33,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:33,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:49:33,366 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:49:33,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-07 00:49:33,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:33,385 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:33,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-07 00:49:33,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:49:33,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:33,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-07 00:49:33,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:33,414 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:33,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-07 00:49:33,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:49:33,415 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:49:33,446 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:49:33,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-07 00:49:33,448 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:49:33,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:49:33,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:49:33,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:49:33,448 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:49:33,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:49:33,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:49:33,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration4_Lasso [2021-12-07 00:49:33,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:49:33,449 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:49:33,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:49:33,493 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:49:33,493 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:49:33,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:33,494 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:33,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-07 00:49:33,496 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 [2021-12-07 00:49:33,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:49:33,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:49:33,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:49:33,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:49:33,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:49:33,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:49:33,517 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:49:33,527 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-12-07 00:49:33,527 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2021-12-07 00:49:33,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:49:33,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:33,528 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:33,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-07 00:49:33,529 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:49:33,537 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-12-07 00:49:33,537 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:49:33,537 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2021-12-07 00:49:33,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-07 00:49:33,569 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-12-07 00:49:33,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:49:33,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,598 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:49:33,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:33,599 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 [2021-12-07 00:49:33,599 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,613 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 20 transitions. Complement of second has 5 states. [2021-12-07 00:49:33,614 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 [2021-12-07 00:49:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-07 00:49:33,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2021-12-07 00:49:33,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:33,615 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:49:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:49:33,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,646 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:49:33,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:33,647 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-07 00:49:33,647 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 20 transitions. Complement of second has 5 states. [2021-12-07 00:49:33,661 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 [2021-12-07 00:49:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-07 00:49:33,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2021-12-07 00:49:33,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:33,662 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:49:33,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-07 00:49:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:49:33,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:33,689 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:49:33,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:33,690 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-07 00:49:33,690 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 14 transitions. Complement of second has 4 states. [2021-12-07 00:49:33,704 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 [2021-12-07 00:49:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-12-07 00:49:33,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2021-12-07 00:49:33,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:33,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2021-12-07 00:49:33,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:33,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-07 00:49:33,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:49:33,706 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2021-12-07 00:49:33,706 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:49:33,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2021-12-07 00:49:33,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-07 00:49:33,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-07 00:49:33,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-07 00:49:33,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:49:33,707 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:49:33,707 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:49:33,707 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:49:33,707 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-07 00:49:33,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-07 00:49:33,707 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:49:33,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-07 00:49:33,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:49:33 BoogieIcfgContainer [2021-12-07 00:49:33,712 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-07 00:49:33,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:49:33,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:49:33,713 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:49:33,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:31" (3/4) ... [2021-12-07 00:49:33,715 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-07 00:49:33,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:49:33,716 INFO L158 Benchmark]: Toolchain (without parser) took 2415.58ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 64.9MB in the beginning and 91.3MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:49:33,716 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:49:33,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.51ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 80.2MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:49:33,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.21ms. Allocated memory is still 102.8MB. Free memory was 80.2MB in the beginning and 78.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:49:33,717 INFO L158 Benchmark]: Boogie Preprocessor took 12.03ms. Allocated memory is still 102.8MB. Free memory was 78.9MB in the beginning and 77.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:49:33,717 INFO L158 Benchmark]: RCFGBuilder took 176.91ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 69.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:49:33,718 INFO L158 Benchmark]: BuchiAutomizer took 2050.67ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 69.8MB in the beginning and 91.3MB in the end (delta: -21.5MB). Peak memory consumption was 198.8kB. Max. memory is 16.1GB. [2021-12-07 00:49:33,718 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 123.7MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:49:33,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.51ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 80.2MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.21ms. Allocated memory is still 102.8MB. Free memory was 80.2MB in the beginning and 78.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.03ms. Allocated memory is still 102.8MB. Free memory was 78.9MB in the beginning and 77.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 176.91ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 69.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2050.67ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 69.8MB in the beginning and 91.3MB in the end (delta: -21.5MB). Peak memory consumption was 198.8kB. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 123.7MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function 2147483647 + -2 * y and consists of 3 locations. One nondeterministic module has affine ranking function 2147483647 + -2 * y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 31 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax159 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf102 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-07 00:49:33,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 00:49:33,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a8e4f9f-56d5-4f33-bdf7-dce6a2b3af0f/bin/uautomizer-DrprNOufMa/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