./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer --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 32bit --witnessprinter.graph.data.programhash edcc597a46f9ad79563531282ca675b8b1d7c4bf ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:06:33,685 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:06:33,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:06:33,696 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:06:33,696 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:06:33,697 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:06:33,698 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:06:33,700 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:06:33,701 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:06:33,702 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:06:33,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:06:33,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:06:33,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:06:33,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:06:33,713 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:06:33,714 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:06:33,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:06:33,716 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:06:33,717 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:06:33,720 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:06:33,729 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:06:33,730 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:06:33,732 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:06:33,732 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:06:33,732 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:06:33,733 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:06:33,734 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:06:33,735 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:06:33,735 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:06:33,736 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:06:33,736 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:06:33,737 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:06:33,737 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:06:33,737 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:06:33,739 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:06:33,739 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:06:33,739 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-10-27 06:06:33,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:06:33,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:06:33,757 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:06:33,757 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:06:33,761 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:06:33,762 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:06:33,762 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:06:33,762 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:06:33,762 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:06:33,762 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:06:33,762 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:06:33,763 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:06:33,763 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 06:06:33,763 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:06:33,763 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:06:33,763 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 06:06:33,763 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:06:33,763 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:06:33,764 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:06:33,764 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:06:33,764 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 06:06:33,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:06:33,764 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:06:33,764 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:06:33,764 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:06:33,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:06:33,765 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:06:33,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:06:33,765 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:06:33,765 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:06:33,769 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:06:33,770 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2018-10-27 06:06:33,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:06:33,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:06:33,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:06:33,821 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:06:33,822 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:06:33,822 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-10-27 06:06:33,874 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/data/ce60e2bf3/46aa2a4d7b2d42feab2e154d35366917/FLAGcdaa77a8f [2018-10-27 06:06:34,226 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:06:34,226 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-10-27 06:06:34,231 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/data/ce60e2bf3/46aa2a4d7b2d42feab2e154d35366917/FLAGcdaa77a8f [2018-10-27 06:06:34,241 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/data/ce60e2bf3/46aa2a4d7b2d42feab2e154d35366917 [2018-10-27 06:06:34,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:06:34,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:06:34,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:34,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:06:34,249 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:06:34,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14956367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34, skipping insertion in model container [2018-10-27 06:06:34,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:06:34,277 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:06:34,397 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:34,399 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:06:34,408 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:34,416 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:06:34,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34 WrapperNode [2018-10-27 06:06:34,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:34,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:34,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:06:34,417 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:06:34,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:34,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:06:34,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:06:34,442 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:06:34,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... [2018-10-27 06:06:34,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:06:34,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:06:34,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:06:34,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:06:34,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:06:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:06:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-10-27 06:06:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-10-27 06:06:34,888 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:06:34,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:34 BoogieIcfgContainer [2018-10-27 06:06:34,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:06:34,889 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:06:34,889 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:06:34,892 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:06:34,893 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:34,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:06:34" (1/3) ... [2018-10-27 06:06:34,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4cfbc332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:34, skipping insertion in model container [2018-10-27 06:06:34,894 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:34,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:34" (2/3) ... [2018-10-27 06:06:34,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4cfbc332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:34, skipping insertion in model container [2018-10-27 06:06:34,894 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:34,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:34" (3/3) ... [2018-10-27 06:06:34,896 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-10-27 06:06:34,944 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:06:34,944 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:06:34,944 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:06:34,944 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:06:34,945 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:06:34,945 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:06:34,945 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:06:34,945 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:06:34,945 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:06:34,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-10-27 06:06:34,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:34,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:34,983 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:34,990 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:06:34,990 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:34,990 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:06:34,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-10-27 06:06:34,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:34,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:34,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:34,992 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:06:34,992 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:35,000 INFO L793 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 17#f91ENTRYtrue [2018-10-27 06:06:35,000 INFO L795 eck$LassoCheckResult]: Loop: 17#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(~x + 11);< 17#f91ENTRYtrue [2018-10-27 06:06:35,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:35,005 INFO L82 PathProgramCache]: Analyzing trace with hash 29877, now seen corresponding path program 1 times [2018-10-27 06:06:35,007 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:35,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:35,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:35,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:35,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:35,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash 44821, now seen corresponding path program 1 times [2018-10-27 06:06:35,082 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:35,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:35,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:35,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:35,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:35,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:35,098 INFO L82 PathProgramCache]: Analyzing trace with hash 890080737, now seen corresponding path program 1 times [2018-10-27 06:06:35,098 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:35,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:35,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:35,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:35,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:35,341 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:35,342 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:35,342 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:35,342 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:35,342 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:35,343 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:35,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:35,346 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:35,346 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-10-27 06:06:35,346 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:35,346 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:35,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,495 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:35,496 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:35,502 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:35,503 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:35,517 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:35,517 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:35,537 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:35,538 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:35,542 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:35,542 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:35,560 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:35,560 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:35,582 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:35,583 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:35,603 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:35,604 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:35,604 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:35,604 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:35,604 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:35,604 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:35,605 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:35,605 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:35,605 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:35,605 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-10-27 06:06:35,605 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:35,605 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:35,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:35,811 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 06:06:35,850 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:35,855 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:35,860 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:35,861 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:35,861 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:35,862 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:35,862 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:35,862 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:35,864 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:35,864 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:35,870 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:35,870 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:35,871 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:35,871 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:35,871 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:35,871 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:35,871 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:35,872 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:35,872 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:35,873 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:35,873 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:35,875 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:35,876 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:35,876 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:35,876 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:35,876 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:35,877 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:35,877 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:35,883 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:35,887 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:35,887 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:06:35,889 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:35,889 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:35,889 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:35,889 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-10-27 06:06:35,890 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:35,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:35,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:35,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:36,132 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:36,134 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2018-10-27 06:06:36,363 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 4 states. Result 34 states and 42 transitions. Complement of second has 12 states. [2018-10-27 06:06:36,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-10-27 06:06:36,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2018-10-27 06:06:36,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:36,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2018-10-27 06:06:36,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:36,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2018-10-27 06:06:36,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:36,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2018-10-27 06:06:36,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:36,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 19 states and 25 transitions. [2018-10-27 06:06:36,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-10-27 06:06:36,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-10-27 06:06:36,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2018-10-27 06:06:36,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:36,383 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-10-27 06:06:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2018-10-27 06:06:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-10-27 06:06:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-27 06:06:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2018-10-27 06:06:36,406 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-10-27 06:06:36,406 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-10-27 06:06:36,407 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:06:36,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2018-10-27 06:06:36,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:36,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:36,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:36,409 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:36,409 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:36,409 INFO L793 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 103#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 104#L26 call main_#t~ret3 := f91(main_~x~0);< 110#f91ENTRY ~x := #in~x; 116#L16 assume !(~x > 100); 107#L19 call #t~ret0 := f91(~x + 11);< 113#f91ENTRY ~x := #in~x; 117#L16 assume ~x > 100;#res := ~x - 10; 114#f91FINAL assume true; 115#f91EXIT >#27#return; 108#L19-1 [2018-10-27 06:06:36,409 INFO L795 eck$LassoCheckResult]: Loop: 108#L19-1 call #t~ret1 := f91(#t~ret0);< 112#f91ENTRY ~x := #in~x; 119#L16 assume !(~x > 100); 106#L19 call #t~ret0 := f91(~x + 11);< 112#f91ENTRY ~x := #in~x; 119#L16 assume ~x > 100;#res := ~x - 10; 109#f91FINAL assume true; 118#f91EXIT >#27#return; 108#L19-1 [2018-10-27 06:06:36,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:36,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1243034264, now seen corresponding path program 1 times [2018-10-27 06:06:36,410 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:36,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:36,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:36,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:36,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:36,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:36,422 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 1 times [2018-10-27 06:06:36,423 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:36,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:36,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:36,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:36,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:36,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash -291973751, now seen corresponding path program 1 times [2018-10-27 06:06:36,435 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:36,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:36,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:36,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:36,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:36,702 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 06:06:36,858 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 06:06:36,871 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:36,871 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:36,871 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:36,871 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:36,871 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:36,872 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:36,872 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:36,872 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:36,872 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-10-27 06:06:36,872 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:36,872 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:36,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:36,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:36,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:37,018 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:37,018 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:37,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:37,021 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:37,047 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:37,048 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:49,091 INFO L448 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-10-27 06:06:49,094 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:49,094 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:49,094 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:49,094 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:49,094 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:49,094 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:49,094 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:49,094 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:49,094 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-10-27 06:06:49,094 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:49,094 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:49,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:49,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:49,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:49,182 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:49,182 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:49,182 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:49,183 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:49,183 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:49,183 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:49,183 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:49,183 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:49,184 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:49,184 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:49,192 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:49,200 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:49,202 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:06:49,202 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:49,202 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:49,203 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:49,203 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-10-27 06:06:49,203 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:49,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:49,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:49,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:49,411 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-10-27 06:06:49,411 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-10-27 06:06:49,676 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 51 states and 73 transitions. Complement of second has 32 states. [2018-10-27 06:06:49,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 06:06:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-10-27 06:06:49,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2018-10-27 06:06:49,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:49,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2018-10-27 06:06:49,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:49,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2018-10-27 06:06:49,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:49,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2018-10-27 06:06:49,686 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-10-27 06:06:49,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2018-10-27 06:06:49,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-10-27 06:06:49,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-10-27 06:06:49,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2018-10-27 06:06:49,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:49,689 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2018-10-27 06:06:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2018-10-27 06:06:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-10-27 06:06:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-27 06:06:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2018-10-27 06:06:49,695 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-10-27 06:06:49,695 INFO L608 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-10-27 06:06:49,695 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:06:49,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2018-10-27 06:06:49,697 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-10-27 06:06:49,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:49,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:49,697 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:49,697 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:49,698 INFO L793 eck$LassoCheckResult]: Stem: 302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 289#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 290#L26 call main_#t~ret3 := f91(main_~x~0);< 291#f91ENTRY ~x := #in~x; 316#L16 assume !(~x > 100); 299#L19 call #t~ret0 := f91(~x + 11);< 308#f91ENTRY ~x := #in~x; 314#L16 assume ~x > 100;#res := ~x - 10; 321#f91FINAL assume true; 320#f91EXIT >#27#return; 294#L19-1 call #t~ret1 := f91(#t~ret0);< 305#f91ENTRY ~x := #in~x; 324#L16 assume !(~x > 100); 306#L19 [2018-10-27 06:06:49,698 INFO L795 eck$LassoCheckResult]: Loop: 306#L19 call #t~ret0 := f91(~x + 11);< 307#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 306#L19 [2018-10-27 06:06:49,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:49,698 INFO L82 PathProgramCache]: Analyzing trace with hash -25705320, now seen corresponding path program 2 times [2018-10-27 06:06:49,698 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:49,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:49,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:49,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:49,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:49,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:49,709 INFO L82 PathProgramCache]: Analyzing trace with hash 55261, now seen corresponding path program 2 times [2018-10-27 06:06:49,709 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:49,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:49,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:49,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:49,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:49,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1282983962, now seen corresponding path program 3 times [2018-10-27 06:06:49,714 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:49,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:49,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:49,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:49,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 06:06:49,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:06:49,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 06:06:49,809 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:49,809 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:49,809 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:49,809 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:49,809 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:49,809 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:49,809 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:49,809 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:49,810 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-10-27 06:06:49,810 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:49,810 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:49,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:49,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:49,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:49,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:49,865 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:49,865 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:49,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:49,868 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:49,870 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:49,870 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:49,888 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:49,888 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:49,890 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:49,890 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:49,908 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:49,908 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:49,910 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:49,910 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:49,928 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:49,928 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:49,958 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:49,958 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:01,988 INFO L448 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-10-27 06:07:01,991 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:07:01,991 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:07:01,991 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:07:01,991 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:07:01,991 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:07:01,992 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:01,992 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:07:01,992 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:07:01,992 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-10-27 06:07:01,992 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:07:01,992 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:07:01,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:01,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:01,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:01,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:02,180 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:07:02,228 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:07:02,228 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:07:02,229 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:02,230 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:02,230 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:02,230 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:02,230 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:02,230 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:02,231 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:02,231 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:02,232 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:07:02,233 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:02,233 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:02,233 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:02,233 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:02,238 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:02,238 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:02,239 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:02,239 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:02,240 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:07:02,240 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:02,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:02,241 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:02,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:02,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:02,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:02,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:02,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:02,246 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:07:02,246 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:02,247 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:02,247 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:02,247 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:02,248 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:02,248 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:02,248 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:02,249 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:02,255 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:07:02,263 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:07:02,263 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:07:02,264 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:07:02,264 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:07:02,264 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:07:02,264 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-10-27 06:07:02,265 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:07:02,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:02,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:02,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:07:02,399 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-10-27 06:07:02,399 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-10-27 06:07:02,491 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2018-10-27 06:07:02,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:07:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-10-27 06:07:02,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-10-27 06:07:02,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:02,496 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:07:02,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:02,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:02,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:07:02,565 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2018-10-27 06:07:02,565 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-10-27 06:07:02,631 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2018-10-27 06:07:02,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:07:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-10-27 06:07:02,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-10-27 06:07:02,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:02,634 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:07:02,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:02,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:02,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:07:02,700 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-10-27 06:07:02,700 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-10-27 06:07:02,770 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 71 states and 100 transitions. Complement of second has 16 states. [2018-10-27 06:07:02,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:07:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2018-10-27 06:07:02,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2018-10-27 06:07:02,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:02,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2018-10-27 06:07:02,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:02,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2018-10-27 06:07:02,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:02,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2018-10-27 06:07:02,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-10-27 06:07:02,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2018-10-27 06:07:02,779 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-10-27 06:07:02,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-10-27 06:07:02,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2018-10-27 06:07:02,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:07:02,780 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2018-10-27 06:07:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2018-10-27 06:07:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-10-27 06:07:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-27 06:07:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2018-10-27 06:07:02,786 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2018-10-27 06:07:02,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 06:07:02,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-27 06:07:02,790 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2018-10-27 06:07:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:07:02,895 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2018-10-27 06:07:02,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 06:07:02,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2018-10-27 06:07:02,898 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-10-27 06:07:02,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2018-10-27 06:07:02,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-10-27 06:07:02,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-10-27 06:07:02,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2018-10-27 06:07:02,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:07:02,903 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2018-10-27 06:07:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2018-10-27 06:07:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-10-27 06:07:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-27 06:07:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2018-10-27 06:07:02,910 INFO L728 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-10-27 06:07:02,910 INFO L608 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-10-27 06:07:02,911 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:07:02,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2018-10-27 06:07:02,913 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-10-27 06:07:02,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:07:02,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:07:02,914 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-10-27 06:07:02,914 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-10-27 06:07:02,915 INFO L793 eck$LassoCheckResult]: Stem: 840#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 831#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 832#L26 call main_#t~ret3 := f91(main_~x~0);< 839#f91ENTRY ~x := #in~x; 862#L16 assume !(~x > 100); 847#L19 call #t~ret0 := f91(~x + 11);< 848#f91ENTRY ~x := #in~x; 870#L16 assume !(~x > 100); 866#L19 call #t~ret0 := f91(~x + 11);< 868#f91ENTRY ~x := #in~x; 871#L16 assume ~x > 100;#res := ~x - 10; 869#f91FINAL assume true; 867#f91EXIT >#27#return; 837#L19-1 call #t~ret1 := f91(#t~ret0);< 844#f91ENTRY ~x := #in~x; 855#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 886#f91EXIT >#29#return; 860#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 884#f91FINAL assume true; 883#f91EXIT >#27#return; 841#L19-1 call #t~ret1 := f91(#t~ret0);< 842#f91ENTRY [2018-10-27 06:07:02,915 INFO L795 eck$LassoCheckResult]: Loop: 842#f91ENTRY ~x := #in~x; 876#L16 assume !(~x > 100); 857#L19 call #t~ret0 := f91(~x + 11);< 856#f91ENTRY ~x := #in~x; 859#L16 assume !(~x > 100); 858#L19 call #t~ret0 := f91(~x + 11);< 872#f91ENTRY ~x := #in~x; 882#L16 assume ~x > 100;#res := ~x - 10; 880#f91FINAL assume true; 878#f91EXIT >#27#return; 834#L19-1 call #t~ret1 := f91(#t~ret0);< 875#f91ENTRY ~x := #in~x; 873#L16 assume ~x > 100;#res := ~x - 10; 874#f91FINAL assume true; 885#f91EXIT >#29#return; 860#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 884#f91FINAL assume true; 883#f91EXIT >#27#return; 850#L19-1 call #t~ret1 := f91(#t~ret0);< 842#f91ENTRY [2018-10-27 06:07:02,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:02,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1708035509, now seen corresponding path program 1 times [2018-10-27 06:07:02,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:02,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:02,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:02,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:07:02,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:02,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:02,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1732488063, now seen corresponding path program 1 times [2018-10-27 06:07:02,939 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:02,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:02,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:02,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:07:02,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:02,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902795, now seen corresponding path program 2 times [2018-10-27 06:07:02,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:02,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:02,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:02,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:07:02,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-27 06:07:03,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:07:03,041 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:07:03,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 06:07:03,100 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-27 06:07:03,100 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 06:07:03,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-27 06:07:03,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:07:03,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-27 06:07:03,388 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:07:03,388 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:07:03,388 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:07:03,388 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:07:03,388 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:07:03,388 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:03,388 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:07:03,388 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:07:03,388 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-10-27 06:07:03,388 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:07:03,388 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:07:03,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:03,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:03,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:03,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:03,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:03,465 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:07:03,465 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:03,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:03,470 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:03,472 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:07:03,472 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:03,491 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:03,491 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:03,493 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:07:03,493 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:03,511 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:03,512 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:03,514 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:07:03,514 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:03,531 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:03,531 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:03,534 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:07:03,534 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:03,552 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:03,552 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:03,573 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:07:03,573 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:04,368 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:07:04,370 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:07:04,370 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:07:04,370 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:07:04,370 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:07:04,370 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:07:04,370 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:04,370 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:07:04,370 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:07:04,371 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-10-27 06:07:04,371 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:07:04,371 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:07:04,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:04,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:04,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:04,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:04,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:04,409 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:07:04,409 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:07:04,409 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:04,410 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:04,410 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:04,410 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:04,410 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:04,410 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:04,411 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:04,411 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:04,412 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:07:04,413 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:04,414 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:04,414 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:04,414 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:04,415 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:04,415 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:04,415 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:04,415 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:04,416 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:07:04,416 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:04,417 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:04,417 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:04,417 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:04,417 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:04,417 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:04,422 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:04,422 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:04,423 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:07:04,423 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:04,424 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:04,424 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:04,424 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:04,424 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:04,424 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:04,425 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:04,425 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:04,430 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:07:04,430 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:04,431 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:04,431 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:04,431 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:04,431 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:04,431 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:04,432 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:04,432 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:04,440 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:07:04,448 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:07:04,448 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:07:04,449 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:07:04,449 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:07:04,449 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:07:04,449 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-10-27 06:07:04,450 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:07:04,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:04,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:04,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 06:07:05,172 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-10-27 06:07:05,172 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-10-27 06:07:05,557 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2018-10-27 06:07:05,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 06:07:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-10-27 06:07:05,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-10-27 06:07:05,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:05,560 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:07:05,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:05,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:05,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 06:07:05,770 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2018-10-27 06:07:05,770 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-10-27 06:07:06,178 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2018-10-27 06:07:06,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 06:07:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-10-27 06:07:06,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-10-27 06:07:06,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:06,180 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:07:06,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:06,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:06,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 06:07:06,474 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-10-27 06:07:06,475 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-10-27 06:07:07,225 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 431 states and 531 transitions. Complement of second has 216 states. [2018-10-27 06:07:07,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 06:07:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 49 transitions. [2018-10-27 06:07:07,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2018-10-27 06:07:07,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:07,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2018-10-27 06:07:07,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:07,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2018-10-27 06:07:07,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:07,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2018-10-27 06:07:07,249 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-10-27 06:07:07,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2018-10-27 06:07:07,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2018-10-27 06:07:07,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2018-10-27 06:07:07,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2018-10-27 06:07:07,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:07:07,255 INFO L705 BuchiCegarLoop]: Abstraction has 203 states and 269 transitions. [2018-10-27 06:07:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2018-10-27 06:07:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2018-10-27 06:07:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-27 06:07:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2018-10-27 06:07:07,272 INFO L728 BuchiCegarLoop]: Abstraction has 157 states and 198 transitions. [2018-10-27 06:07:07,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:07:07,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:07:07,272 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand 9 states. [2018-10-27 06:07:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:07:07,436 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2018-10-27 06:07:07,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 06:07:07,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2018-10-27 06:07:07,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-10-27 06:07:07,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2018-10-27 06:07:07,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2018-10-27 06:07:07,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2018-10-27 06:07:07,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2018-10-27 06:07:07,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:07:07,444 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 123 transitions. [2018-10-27 06:07:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2018-10-27 06:07:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2018-10-27 06:07:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-27 06:07:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2018-10-27 06:07:07,452 INFO L728 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-10-27 06:07:07,452 INFO L608 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-10-27 06:07:07,452 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:07:07,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2018-10-27 06:07:07,456 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-10-27 06:07:07,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:07:07,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:07:07,457 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2018-10-27 06:07:07,457 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:07:07,457 INFO L793 eck$LassoCheckResult]: Stem: 2841#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2832#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2833#L26 call main_#t~ret3 := f91(main_~x~0);< 2840#f91ENTRY ~x := #in~x; 2896#L16 assume !(~x > 100); 2881#L19 call #t~ret0 := f91(~x + 11);< 2883#f91ENTRY ~x := #in~x; 2894#L16 assume !(~x > 100); 2882#L19 call #t~ret0 := f91(~x + 11);< 2892#f91ENTRY ~x := #in~x; 2895#L16 assume ~x > 100;#res := ~x - 10; 2893#f91FINAL assume true; 2891#f91EXIT >#27#return; 2887#L19-1 call #t~ret1 := f91(#t~ret0);< 2889#f91ENTRY ~x := #in~x; 2908#L16 assume ~x > 100;#res := ~x - 10; 2897#f91FINAL assume true; 2886#f91EXIT >#29#return; 2885#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 2884#f91FINAL assume true; 2880#f91EXIT >#27#return; 2874#L19-1 call #t~ret1 := f91(#t~ret0);< 2879#f91ENTRY ~x := #in~x; 2877#L16 assume !(~x > 100); 2843#L19 call #t~ret0 := f91(~x + 11);< 2850#f91ENTRY ~x := #in~x; 2858#L16 assume !(~x > 100); 2844#L19 call #t~ret0 := f91(~x + 11);< 2851#f91ENTRY ~x := #in~x; 2931#L16 assume ~x > 100;#res := ~x - 10; 2930#f91FINAL assume true; 2859#f91EXIT >#27#return; 2842#L19-1 [2018-10-27 06:07:07,457 INFO L795 eck$LassoCheckResult]: Loop: 2842#L19-1 call #t~ret1 := f91(#t~ret0);< 2845#f91ENTRY ~x := #in~x; 2873#L16 assume !(~x > 100); 2848#L19 call #t~ret0 := f91(~x + 11);< 2849#f91ENTRY ~x := #in~x; 2857#L16 assume ~x > 100;#res := ~x - 10; 2863#f91FINAL assume true; 2929#f91EXIT >#27#return; 2842#L19-1 [2018-10-27 06:07:07,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:07,457 INFO L82 PathProgramCache]: Analyzing trace with hash -517290798, now seen corresponding path program 3 times [2018-10-27 06:07:07,458 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:07,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:07,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:07,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:07:07,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-27 06:07:07,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:07:07,650 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:07:07,657 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 06:07:07,674 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-27 06:07:07,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 06:07:07,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-27 06:07:07,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:07:07,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-10-27 06:07:07,699 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:07:07,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:07,699 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 2 times [2018-10-27 06:07:07,699 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:07,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:07,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:07,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:07:07,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:07,810 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:07:07,810 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:07:07,810 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:07:07,810 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:07:07,810 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:07:07,810 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:07,810 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:07:07,810 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:07:07,810 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-10-27 06:07:07,811 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:07:07,811 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:07:07,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:07,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:07,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:07,846 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:07:07,846 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:07,852 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:07,852 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:07,854 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:07:07,854 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:07,873 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:07,873 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:07,875 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:07:07,875 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:07,895 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:07:07,895 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93d53fd4-142e-466d-ac2e-c9aec5f4af52/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:07,922 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:07:07,922 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:07:19,958 INFO L448 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-10-27 06:07:19,960 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:07:19,960 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:07:19,961 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:07:19,961 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:07:19,961 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:07:19,961 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:07:19,961 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:07:19,961 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:07:19,961 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-10-27 06:07:19,961 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:07:19,961 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:07:19,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:19,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:19,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:07:19,992 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:07:19,992 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:07:19,992 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:07:19,992 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:07:19,993 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:07:19,993 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:07:19,993 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:07:19,993 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:07:19,993 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:07:19,994 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:07:19,996 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:07:20,002 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:07:20,002 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:07:20,002 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:07:20,002 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:07:20,003 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:07:20,003 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-10-27 06:07:20,003 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:07:20,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:20,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:20,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:07:20,302 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-10-27 06:07:20,302 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-10-27 06:07:20,430 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 139 states and 161 transitions. Complement of second has 24 states. [2018-10-27 06:07:20,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 06:07:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-10-27 06:07:20,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-10-27 06:07:20,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:20,432 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:07:20,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:20,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:20,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:07:20,570 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2018-10-27 06:07:20,570 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-10-27 06:07:20,719 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 139 states and 161 transitions. Complement of second has 24 states. [2018-10-27 06:07:20,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 06:07:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-10-27 06:07:20,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-10-27 06:07:20,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:20,721 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:07:20,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:20,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:20,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:07:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:07:20,849 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-10-27 06:07:20,849 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-10-27 06:07:21,041 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 181 states and 211 transitions. Complement of second has 27 states. [2018-10-27 06:07:21,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-10-27 06:07:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 06:07:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2018-10-27 06:07:21,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2018-10-27 06:07:21,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:21,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2018-10-27 06:07:21,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:21,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2018-10-27 06:07:21,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:07:21,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2018-10-27 06:07:21,051 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:07:21,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2018-10-27 06:07:21,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:07:21,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:07:21,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:07:21,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:07:21,051 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:07:21,051 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:07:21,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:07:21,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:07:21,052 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-10-27 06:07:21,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:07:21,052 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-10-27 06:07:21,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:07:21,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-10-27 06:07:21,052 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:07:21,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 06:07:21,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:07:21,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:07:21,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:07:21,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:07:21,053 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:07:21,053 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:07:21,053 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:07:21,053 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:07:21,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:07:21,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:07:21,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:07:21,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:07:21 BoogieIcfgContainer [2018-10-27 06:07:21,063 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:07:21,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:07:21,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:07:21,063 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:07:21,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:34" (3/4) ... [2018-10-27 06:07:21,067 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:07:21,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:07:21,067 INFO L168 Benchmark]: Toolchain (without parser) took 46823.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 953.1 MB in the beginning and 1.2 GB in the end (delta: -220.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:07:21,068 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:07:21,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.42 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:21,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:07:21,069 INFO L168 Benchmark]: Boogie Preprocessor took 13.02 ms. Allocated memory is still 1.0 GB. Free memory was 942.3 MB in the beginning and 939.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:21,069 INFO L168 Benchmark]: RCFGBuilder took 433.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:21,071 INFO L168 Benchmark]: BuchiAutomizer took 46174.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 34.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -32.9 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:21,072 INFO L168 Benchmark]: Witness Printer took 3.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:07:21,074 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.42 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.02 ms. Allocated memory is still 1.0 GB. Free memory was 942.3 MB in the beginning and 939.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 433.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.6 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 46174.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 34.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -32.9 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 46.1s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 40.4s. Construction of modules took 0.9s. Büchi inclusion checks took 4.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 100 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 168 SDtfs, 283 SDslu, 203 SDs, 0 SdLazy, 796 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 37.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...