./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 37028c56b7915050ee6a79b5e737b9e44bf7c3db ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:17:09,564 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:17:09,565 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:17:09,574 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:17:09,574 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:17:09,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:17:09,575 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:17:09,576 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:17:09,578 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:17:09,578 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:17:09,579 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:17:09,579 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:17:09,580 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:17:09,580 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:17:09,581 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:17:09,582 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:17:09,582 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:17:09,584 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:17:09,585 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:17:09,586 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:17:09,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:17:09,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:17:09,589 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:17:09,589 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:17:09,590 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:17:09,590 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:17:09,591 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:17:09,591 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:17:09,592 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:17:09,593 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:17:09,593 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:17:09,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:17:09,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:17:09,594 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:17:09,594 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:17:09,595 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:17:09,595 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 15:17:09,605 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:17:09,606 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:17:09,606 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:17:09,607 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:17:09,607 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:17:09,607 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 15:17:09,607 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 15:17:09,607 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 15:17:09,607 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 15:17:09,607 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 15:17:09,608 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 15:17:09,608 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:17:09,608 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:17:09,608 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 15:17:09,608 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:17:09,608 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:17:09,608 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:17:09,609 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 15:17:09,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 15:17:09,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 15:17:09,609 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:17:09,609 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:17:09,609 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 15:17:09,609 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:17:09,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 15:17:09,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:17:09,610 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:17:09,610 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 15:17:09,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:17:09,610 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:17:09,610 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 15:17:09,611 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 15:17:09,611 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 -> 37028c56b7915050ee6a79b5e737b9e44bf7c3db [2018-11-18 15:17:09,634 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:17:09,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:17:09,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:17:09,647 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:17:09,647 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:17:09,647 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 15:17:09,684 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/data/fb210f1f3/be1bdab71d7149b28facdecba59992b9/FLAG0fe214ee7 [2018-11-18 15:17:09,975 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:17:09,976 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 15:17:09,979 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/data/fb210f1f3/be1bdab71d7149b28facdecba59992b9/FLAG0fe214ee7 [2018-11-18 15:17:09,989 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/bin-2019/uautomizer/data/fb210f1f3/be1bdab71d7149b28facdecba59992b9 [2018-11-18 15:17:09,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:17:09,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:17:09,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:17:09,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:17:09,995 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:17:09,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:09" (1/1) ... [2018-11-18 15:17:09,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3275144b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:09, skipping insertion in model container [2018-11-18 15:17:09,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:09" (1/1) ... [2018-11-18 15:17:10,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:17:10,013 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:17:10,107 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:17:10,109 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:17:10,118 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:17:10,126 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:17:10,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10 WrapperNode [2018-11-18 15:17:10,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:17:10,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:17:10,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:17:10,127 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:17:10,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:17:10,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:17:10,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:17:10,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:17:10,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... [2018-11-18 15:17:10,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:17:10,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:17:10,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:17:10,157 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:17:10,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:17:10,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:17:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-18 15:17:10,244 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-18 15:17:10,344 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:17:10,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:10 BoogieIcfgContainer [2018-11-18 15:17:10,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:17:10,345 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 15:17:10,345 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 15:17:10,347 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 15:17:10,348 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:17:10,348 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 03:17:09" (1/3) ... [2018-11-18 15:17:10,349 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cc2389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 03:17:10, skipping insertion in model container [2018-11-18 15:17:10,349 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:17:10,349 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:10" (2/3) ... [2018-11-18 15:17:10,349 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cc2389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 03:17:10, skipping insertion in model container [2018-11-18 15:17:10,349 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:17:10,350 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:10" (3/3) ... [2018-11-18 15:17:10,351 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 15:17:10,397 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:17:10,398 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 15:17:10,398 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 15:17:10,398 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 15:17:10,398 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:17:10,398 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:17:10,398 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 15:17:10,398 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:17:10,398 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 15:17:10,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-18 15:17:10,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:17:10,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:17:10,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:17:10,437 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 15:17:10,437 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 15:17:10,437 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 15:17:10,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-18 15:17:10,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:17:10,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:17:10,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:17:10,439 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 15:17:10,439 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 15:17:10,446 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 17#f91ENTRYtrue [2018-11-18 15:17:10,446 INFO L796 eck$LassoCheckResult]: Loop: 17#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(11 + ~x);< 17#f91ENTRYtrue [2018-11-18 15:17:10,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:10,450 INFO L82 PathProgramCache]: Analyzing trace with hash 29877, now seen corresponding path program 1 times [2018-11-18 15:17:10,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:10,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:10,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:10,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:10,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:10,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:10,511 INFO L82 PathProgramCache]: Analyzing trace with hash 44821, now seen corresponding path program 1 times [2018-11-18 15:17:10,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:10,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:10,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:10,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:10,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:10,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:10,522 INFO L82 PathProgramCache]: Analyzing trace with hash 890080737, now seen corresponding path program 1 times [2018-11-18 15:17:10,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:10,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:10,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:10,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:10,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:10,576 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:10,577 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:10,577 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:10,578 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:10,578 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:17:10,578 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:10,578 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:10,578 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:10,578 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-18 15:17:10,578 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:10,579 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:10,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,658 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:10,659 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:10,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:10,663 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:10,669 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:10,669 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:10,685 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:10,685 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:10,687 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:10,688 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:10,703 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:10,703 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:10,721 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:17:10,721 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:10,738 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:17:10,739 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:10,739 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:10,739 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:10,739 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:10,739 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:17:10,739 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:10,739 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:10,739 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:10,740 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-18 15:17:10,740 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:10,740 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:10,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:10,809 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:10,813 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:17:10,814 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 [2018-11-18 15:17:10,815 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:10,816 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:10,816 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:10,816 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:10,816 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:10,818 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:10,818 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:10,821 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:10,822 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 [2018-11-18 15:17:10,822 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:10,823 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:10,823 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:10,823 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:10,823 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:10,823 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:10,823 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:10,825 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:10,825 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 [2018-11-18 15:17:10,826 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:10,826 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:10,826 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:10,826 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:10,826 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:10,827 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:10,827 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:10,832 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:17:10,836 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:17:10,836 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:17:10,838 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:17:10,838 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:17:10,838 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:17:10,839 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-11-18 15:17:10,840 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:17:10,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:10,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:10,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:10,945 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 [2018-11-18 15:17:10,946 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2018-11-18 15:17:11,040 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. [2018-11-18 15:17:11,042 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 [2018-11-18 15:17:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 15:17:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 15:17:11,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-18 15:17:11,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:11,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 15:17:11,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:11,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-18 15:17:11,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:11,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2018-11-18 15:17:11,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:17:11,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 19 states and 25 transitions. [2018-11-18 15:17:11,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 15:17:11,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-18 15:17:11,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2018-11-18 15:17:11,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:17:11,058 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-11-18 15:17:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2018-11-18 15:17:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-18 15:17:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 15:17:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2018-11-18 15:17:11,077 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-18 15:17:11,077 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-18 15:17:11,077 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 15:17:11,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2018-11-18 15:17:11,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:17:11,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:17:11,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:17:11,079 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:17:11,079 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-18 15:17:11,079 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 103#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 104#L26 call main_#t~ret3 := f91(main_~x~0);< 110#f91ENTRY ~x := #in~x; 116#L16 assume !(~x > 100); 107#L19 call #t~ret0 := f91(11 + ~x);< 113#f91ENTRY ~x := #in~x; 117#L16 assume ~x > 100;#res := ~x - 10; 114#f91FINAL assume true; 115#f91EXIT >#27#return; 108#L19-1 [2018-11-18 15:17:11,079 INFO L796 eck$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(11 + ~x);< 112#f91ENTRY ~x := #in~x; 119#L16 assume ~x > 100;#res := ~x - 10; 109#f91FINAL assume true; 118#f91EXIT >#27#return; 108#L19-1 [2018-11-18 15:17:11,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:11,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1243034264, now seen corresponding path program 1 times [2018-11-18 15:17:11,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:11,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:11,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:11,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:11,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:11,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 1 times [2018-11-18 15:17:11,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:11,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:11,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:11,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:11,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:11,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:11,095 INFO L82 PathProgramCache]: Analyzing trace with hash -291973751, now seen corresponding path program 1 times [2018-11-18 15:17:11,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:11,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:11,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:11,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:11,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:11,195 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:11,196 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:11,196 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:11,196 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:11,196 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:17:11,196 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:11,196 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:11,196 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:11,196 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-18 15:17:11,196 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:11,196 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:11,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:11,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:11,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:11,251 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:11,252 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:11,264 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:11,264 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:11,300 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:17:11,301 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:23,333 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-18 15:17:23,336 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:23,336 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:23,336 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:23,336 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:23,336 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:17:23,336 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:23,336 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:23,337 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:23,337 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-18 15:17:23,337 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:23,337 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:23,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:23,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:23,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:23,382 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:23,382 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:17:23,383 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 [2018-11-18 15:17:23,383 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:23,384 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:23,385 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:23,385 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:23,385 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:23,386 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:23,386 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:23,393 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:17:23,399 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:17:23,399 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:17:23,399 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:17:23,400 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:17:23,400 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:17:23,400 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-18 15:17:23,400 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:17:23,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:23,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:23,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:23,529 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 [2018-11-18 15:17:23,529 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-11-18 15:17:23,695 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. [2018-11-18 15:17:23,697 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 [2018-11-18 15:17:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 15:17:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-18 15:17:23,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-18 15:17:23,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:23,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2018-11-18 15:17:23,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:23,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2018-11-18 15:17:23,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:23,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2018-11-18 15:17:23,701 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-18 15:17:23,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2018-11-18 15:17:23,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-18 15:17:23,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-18 15:17:23,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2018-11-18 15:17:23,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:17:23,704 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2018-11-18 15:17:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2018-11-18 15:17:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-11-18 15:17:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 15:17:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2018-11-18 15:17:23,709 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-11-18 15:17:23,709 INFO L608 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-11-18 15:17:23,709 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 15:17:23,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2018-11-18 15:17:23,710 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-18 15:17:23,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:17:23,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:17:23,710 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:17:23,711 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 15:17:23,711 INFO L794 eck$LassoCheckResult]: Stem: 302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 289#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 290#L26 call main_#t~ret3 := f91(main_~x~0);< 291#f91ENTRY ~x := #in~x; 316#L16 assume !(~x > 100); 299#L19 call #t~ret0 := f91(11 + ~x);< 308#f91ENTRY ~x := #in~x; 314#L16 assume ~x > 100;#res := ~x - 10; 321#f91FINAL assume true; 320#f91EXIT >#27#return; 294#L19-1 call #t~ret1 := f91(#t~ret0);< 305#f91ENTRY ~x := #in~x; 324#L16 assume !(~x > 100); 306#L19 [2018-11-18 15:17:23,711 INFO L796 eck$LassoCheckResult]: Loop: 306#L19 call #t~ret0 := f91(11 + ~x);< 307#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 306#L19 [2018-11-18 15:17:23,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:23,711 INFO L82 PathProgramCache]: Analyzing trace with hash -25705320, now seen corresponding path program 2 times [2018-11-18 15:17:23,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:23,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:23,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:23,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:23,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:23,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash 55261, now seen corresponding path program 2 times [2018-11-18 15:17:23,721 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:23,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:23,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:23,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:17:23,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:23,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:23,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1282983962, now seen corresponding path program 3 times [2018-11-18 15:17:23,726 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:23,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:23,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:23,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:17:23,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:17:23,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:17:23,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 15:17:23,801 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:23,801 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:23,801 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:23,801 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:23,801 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:17:23,801 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:23,801 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:23,801 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:23,802 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-18 15:17:23,802 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:23,802 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:23,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:23,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:23,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:23,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:23,829 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:23,829 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:23,835 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:23,835 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:23,838 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:23,839 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:23,854 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:23,854 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:23,856 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:23,856 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:23,874 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:23,874 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:23,876 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:23,876 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:23,892 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:23,892 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:23,913 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:17:23,913 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:35,935 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-18 15:17:35,937 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:35,938 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:35,938 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:35,938 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:35,938 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:17:35,938 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:35,938 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:35,938 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:35,938 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-18 15:17:35,938 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:35,938 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:35,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:35,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:35,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:35,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:35,958 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:35,958 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:17:35,958 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 [2018-11-18 15:17:35,959 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:35,959 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:35,959 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:35,959 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:35,959 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:35,960 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:35,960 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:35,960 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:35,961 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 [2018-11-18 15:17:35,961 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:35,961 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:35,961 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:35,961 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:35,961 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:35,962 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:35,962 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:35,963 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:35,963 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 [2018-11-18 15:17:35,963 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:35,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:35,964 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:35,964 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:35,964 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:35,964 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:35,964 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:35,965 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:35,965 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 [2018-11-18 15:17:35,965 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:35,966 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:35,966 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:35,966 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:35,966 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:35,966 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:35,966 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:35,971 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:17:35,974 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:17:35,974 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:17:35,974 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:17:35,974 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:17:35,975 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:17:35,975 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-11-18 15:17:35,975 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:17:35,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:36,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:36,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:36,051 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 [2018-11-18 15:17:36,051 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 15:17:36,098 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. [2018-11-18 15:17:36,099 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 [2018-11-18 15:17:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 15:17:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-11-18 15:17:36,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-18 15:17:36,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:36,100 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 15:17:36,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:36,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:36,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:36,156 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 [2018-11-18 15:17:36,156 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 15:17:36,195 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. [2018-11-18 15:17:36,195 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 [2018-11-18 15:17:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 15:17:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-11-18 15:17:36,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-18 15:17:36,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:36,196 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 15:17:36,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:36,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:36,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:36,262 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 [2018-11-18 15:17:36,262 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 15:17:36,311 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. [2018-11-18 15:17:36,312 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 [2018-11-18 15:17:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 15:17:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2018-11-18 15:17:36,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-18 15:17:36,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:36,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-18 15:17:36,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:36,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2018-11-18 15:17:36,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:36,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2018-11-18 15:17:36,316 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 15:17:36,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2018-11-18 15:17:36,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-18 15:17:36,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-18 15:17:36,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2018-11-18 15:17:36,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:17:36,319 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2018-11-18 15:17:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2018-11-18 15:17:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-11-18 15:17:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 15:17:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2018-11-18 15:17:36,323 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2018-11-18 15:17:36,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 15:17:36,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-18 15:17:36,327 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2018-11-18 15:17:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:17:36,392 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2018-11-18 15:17:36,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 15:17:36,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2018-11-18 15:17:36,394 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-18 15:17:36,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2018-11-18 15:17:36,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 15:17:36,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 15:17:36,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2018-11-18 15:17:36,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:17:36,397 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2018-11-18 15:17:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2018-11-18 15:17:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-11-18 15:17:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-18 15:17:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2018-11-18 15:17:36,401 INFO L728 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-18 15:17:36,401 INFO L608 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-18 15:17:36,401 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 15:17:36,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2018-11-18 15:17:36,402 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-18 15:17:36,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:17:36,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:17:36,406 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-18 15:17:36,406 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-11-18 15:17:36,406 INFO L794 eck$LassoCheckResult]: Stem: 840#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 831#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 832#L26 call main_#t~ret3 := f91(main_~x~0);< 839#f91ENTRY ~x := #in~x; 862#L16 assume !(~x > 100); 847#L19 call #t~ret0 := f91(11 + ~x);< 848#f91ENTRY ~x := #in~x; 870#L16 assume !(~x > 100); 866#L19 call #t~ret0 := f91(11 + ~x);< 868#f91ENTRY ~x := #in~x; 871#L16 assume ~x > 100;#res := ~x - 10; 869#f91FINAL assume true; 867#f91EXIT >#27#return; 837#L19-1 call #t~ret1 := f91(#t~ret0);< 844#f91ENTRY ~x := #in~x; 855#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 886#f91EXIT >#29#return; 860#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 884#f91FINAL assume true; 883#f91EXIT >#27#return; 841#L19-1 call #t~ret1 := f91(#t~ret0);< 842#f91ENTRY [2018-11-18 15:17:36,406 INFO L796 eck$LassoCheckResult]: Loop: 842#f91ENTRY ~x := #in~x; 876#L16 assume !(~x > 100); 857#L19 call #t~ret0 := f91(11 + ~x);< 856#f91ENTRY ~x := #in~x; 859#L16 assume !(~x > 100); 858#L19 call #t~ret0 := f91(11 + ~x);< 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~ret0;havoc #t~ret1; 884#f91FINAL assume true; 883#f91EXIT >#27#return; 850#L19-1 call #t~ret1 := f91(#t~ret0);< 842#f91ENTRY [2018-11-18 15:17:36,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1708035509, now seen corresponding path program 1 times [2018-11-18 15:17:36,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:36,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:36,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:36,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:17:36,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:36,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:36,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1732488063, now seen corresponding path program 1 times [2018-11-18 15:17:36,417 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:36,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:36,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:36,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:36,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:36,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:36,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902795, now seen corresponding path program 2 times [2018-11-18 15:17:36,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:36,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:36,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:36,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:17:36,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-18 15:17:36,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:17:36,484 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:36,492 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:17:36,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:17:36,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:17:36,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-18 15:17:36,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:17:36,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 15:17:36,648 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:36,648 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:36,648 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:36,648 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:36,648 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:17:36,648 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:36,648 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:36,649 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:36,649 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-18 15:17:36,649 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:36,649 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:36,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:36,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:36,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:36,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:36,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:36,688 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:36,688 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:36,696 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:36,696 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:36,699 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:36,699 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:36,720 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:36,720 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:36,722 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:36,722 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:36,740 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:36,740 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:36,743 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:36,743 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:36,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:36,768 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:36,770 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:36,770 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:36,794 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:36,794 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:36,815 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:17:36,816 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:37,129 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:17:37,131 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:37,131 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:37,131 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:37,131 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:37,131 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:17:37,131 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:37,131 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:37,131 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:37,131 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-18 15:17:37,131 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:37,131 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:37,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:37,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:37,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:37,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:37,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:37,151 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:37,151 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:17:37,151 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 [2018-11-18 15:17:37,152 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:37,152 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:37,152 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:37,152 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:37,152 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:37,152 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:37,152 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:37,153 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:37,153 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 [2018-11-18 15:17:37,153 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:37,153 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:37,153 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:37,154 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:37,154 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:37,154 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:37,154 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:37,154 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:37,154 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 [2018-11-18 15:17:37,155 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:37,155 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:37,155 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:37,155 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:37,155 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:37,155 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:37,155 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:37,156 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:37,156 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 [2018-11-18 15:17:37,156 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:37,156 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:37,156 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:37,156 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:37,156 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:37,157 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:37,157 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:37,157 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:17:37,157 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 [2018-11-18 15:17:37,158 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:37,158 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:37,158 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:37,158 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:37,158 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:37,158 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:37,158 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:37,160 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:17:37,162 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:17:37,162 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:17:37,162 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:17:37,163 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:17:37,163 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:17:37,163 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-11-18 15:17:37,163 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:17:37,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:37,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:37,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 15:17:37,356 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 [2018-11-18 15:17:37,356 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-18 15:17:37,585 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. [2018-11-18 15:17:37,585 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 [2018-11-18 15:17:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 15:17:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-11-18 15:17:37,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-18 15:17:37,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:37,586 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 15:17:37,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:37,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:37,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 15:17:37,724 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 [2018-11-18 15:17:37,724 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-18 15:17:37,976 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. [2018-11-18 15:17:37,977 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 [2018-11-18 15:17:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 15:17:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-11-18 15:17:37,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-18 15:17:37,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:37,977 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 15:17:37,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:38,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:38,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 15:17:38,116 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 [2018-11-18 15:17:38,116 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-18 15:17:38,665 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. [2018-11-18 15:17:38,665 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 [2018-11-18 15:17:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 15:17:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 49 transitions. [2018-11-18 15:17:38,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-18 15:17:38,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:38,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2018-11-18 15:17:38,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:38,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2018-11-18 15:17:38,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:38,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2018-11-18 15:17:38,674 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-11-18 15:17:38,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2018-11-18 15:17:38,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2018-11-18 15:17:38,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2018-11-18 15:17:38,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2018-11-18 15:17:38,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:17:38,678 INFO L705 BuchiCegarLoop]: Abstraction has 203 states and 269 transitions. [2018-11-18 15:17:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2018-11-18 15:17:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2018-11-18 15:17:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-18 15:17:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2018-11-18 15:17:38,690 INFO L728 BuchiCegarLoop]: Abstraction has 157 states and 198 transitions. [2018-11-18 15:17:38,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 15:17:38,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 15:17:38,690 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand 9 states. [2018-11-18 15:17:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:17:38,807 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2018-11-18 15:17:38,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 15:17:38,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2018-11-18 15:17:38,810 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 15:17:38,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2018-11-18 15:17:38,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2018-11-18 15:17:38,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2018-11-18 15:17:38,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2018-11-18 15:17:38,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:17:38,812 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 123 transitions. [2018-11-18 15:17:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2018-11-18 15:17:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2018-11-18 15:17:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-18 15:17:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2018-11-18 15:17:38,819 INFO L728 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-11-18 15:17:38,819 INFO L608 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-11-18 15:17:38,820 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 15:17:38,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2018-11-18 15:17:38,822 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 15:17:38,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:17:38,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:17:38,823 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2018-11-18 15:17:38,823 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-18 15:17:38,823 INFO L794 eck$LassoCheckResult]: Stem: 2841#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2832#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2833#L26 call main_#t~ret3 := f91(main_~x~0);< 2840#f91ENTRY ~x := #in~x; 2896#L16 assume !(~x > 100); 2881#L19 call #t~ret0 := f91(11 + ~x);< 2883#f91ENTRY ~x := #in~x; 2894#L16 assume !(~x > 100); 2882#L19 call #t~ret0 := f91(11 + ~x);< 2892#f91ENTRY ~x := #in~x; 2895#L16 assume ~x > 100;#res := ~x - 10; 2893#f91FINAL assume true; 2891#f91EXIT >#27#return; 2887#L19-1 call #t~ret1 := f91(#t~ret0);< 2889#f91ENTRY ~x := #in~x; 2908#L16 assume ~x > 100;#res := ~x - 10; 2897#f91FINAL assume true; 2886#f91EXIT >#29#return; 2885#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 2884#f91FINAL assume true; 2880#f91EXIT >#27#return; 2874#L19-1 call #t~ret1 := f91(#t~ret0);< 2879#f91ENTRY ~x := #in~x; 2877#L16 assume !(~x > 100); 2843#L19 call #t~ret0 := f91(11 + ~x);< 2850#f91ENTRY ~x := #in~x; 2858#L16 assume !(~x > 100); 2844#L19 call #t~ret0 := f91(11 + ~x);< 2851#f91ENTRY ~x := #in~x; 2931#L16 assume ~x > 100;#res := ~x - 10; 2930#f91FINAL assume true; 2859#f91EXIT >#27#return; 2842#L19-1 [2018-11-18 15:17:38,823 INFO L796 eck$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(11 + ~x);< 2849#f91ENTRY ~x := #in~x; 2857#L16 assume ~x > 100;#res := ~x - 10; 2863#f91FINAL assume true; 2929#f91EXIT >#27#return; 2842#L19-1 [2018-11-18 15:17:38,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:38,824 INFO L82 PathProgramCache]: Analyzing trace with hash -517290798, now seen corresponding path program 3 times [2018-11-18 15:17:38,824 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:38,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:38,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:38,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:17:38,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-18 15:17:38,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:17:38,895 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:38,901 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:17:38,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 15:17:38,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:17:38,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 15:17:38,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:17:38,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-18 15:17:38,929 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:17:38,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:38,929 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 2 times [2018-11-18 15:17:38,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:17:38,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:17:38,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:38,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:17:38,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:17:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:17:38,975 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:38,975 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:38,975 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:38,975 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:38,975 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:17:38,975 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:38,975 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:38,975 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:38,976 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-18 15:17:38,976 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:38,976 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:38,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:38,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:38,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:39,006 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:39,006 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:39,010 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:39,010 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:39,012 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:39,012 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:39,036 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:39,037 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:39,038 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:17:39,038 INFO L448 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_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:39,054 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:17:39,054 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e58fb7f3-df56-481f-8b36-555b74015ff4/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 [2018-11-18 15:17:39,074 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:17:39,074 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:17:51,103 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-18 15:17:51,106 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:17:51,106 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:17:51,106 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:17:51,106 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:17:51,106 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:17:51,106 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:17:51,106 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:17:51,106 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:17:51,106 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-18 15:17:51,106 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:17:51,106 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:17:51,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:51,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:51,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:17:51,130 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:17:51,130 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:17:51,130 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 [2018-11-18 15:17:51,131 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:17:51,131 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:17:51,131 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:17:51,131 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:17:51,131 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:17:51,132 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:17:51,132 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:17:51,134 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:17:51,137 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:17:51,137 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:17:51,138 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:17:51,138 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:17:51,138 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:17:51,138 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-18 15:17:51,138 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:17:51,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:51,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:51,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:51,289 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 [2018-11-18 15:17:51,289 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-18 15:17:51,432 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. [2018-11-18 15:17:51,432 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 [2018-11-18 15:17:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 15:17:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-18 15:17:51,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-18 15:17:51,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:51,433 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 15:17:51,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:51,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:51,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:51,539 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 [2018-11-18 15:17:51,539 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-18 15:17:51,644 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. [2018-11-18 15:17:51,645 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 [2018-11-18 15:17:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 15:17:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-18 15:17:51,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-18 15:17:51,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:51,646 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 15:17:51,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:17:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:51,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:17:51,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:17:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:17:51,741 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 [2018-11-18 15:17:51,741 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-18 15:17:51,872 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. [2018-11-18 15:17:51,872 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 [2018-11-18 15:17:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 15:17:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2018-11-18 15:17:51,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-18 15:17:51,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:51,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2018-11-18 15:17:51,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:51,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2018-11-18 15:17:51,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:17:51,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2018-11-18 15:17:51,876 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:17:51,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2018-11-18 15:17:51,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 15:17:51,876 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 15:17:51,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 15:17:51,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:17:51,877 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:17:51,877 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:17:51,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 15:17:51,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 15:17:51,877 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-18 15:17:51,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:17:51,877 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 15:17:51,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:17:51,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 15:17:51,878 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:17:51,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:17:51,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 15:17:51,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 15:17:51,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 15:17:51,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:17:51,878 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:17:51,879 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:17:51,879 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:17:51,879 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 15:17:51,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:17:51,879 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:17:51,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 15:17:51,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 03:17:51 BoogieIcfgContainer [2018-11-18 15:17:51,883 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 15:17:51,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:17:51,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:17:51,884 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:17:51,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:17:10" (3/4) ... [2018-11-18 15:17:51,886 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 15:17:51,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:17:51,887 INFO L168 Benchmark]: Toolchain (without parser) took 41895.08 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 297.3 MB). Free memory was 953.8 MB in the beginning and 853.0 MB in the end (delta: 100.7 MB). Peak memory consumption was 398.0 MB. Max. memory is 11.5 GB. [2018-11-18 15:17:51,888 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:17:51,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.23 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:17:51,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.81 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:17:51,890 INFO L168 Benchmark]: Boogie Preprocessor took 10.49 ms. Allocated memory is still 1.0 GB. Free memory is still 940.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:17:51,890 INFO L168 Benchmark]: RCFGBuilder took 188.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 15:17:51,890 INFO L168 Benchmark]: BuchiAutomizer took 41538.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 147.8 MB). Free memory was 1.1 GB in the beginning and 853.0 MB in the end (delta: 275.9 MB). Peak memory consumption was 423.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:17:51,891 INFO L168 Benchmark]: Witness Printer took 3.33 ms. Allocated memory is still 1.3 GB. Free memory is still 853.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:17:51,893 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 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.23 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.81 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.49 ms. Allocated memory is still 1.0 GB. Free memory is still 940.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 188.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41538.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 147.8 MB). Free memory was 1.1 GB in the beginning and 853.0 MB in the end (delta: 275.9 MB). Peak memory consumption was 423.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.33 ms. Allocated memory is still 1.3 GB. Free memory is still 853.0 MB. 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 41.5s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 38.0s. Construction of modules took 0.5s. Büchi inclusion checks took 2.7s. 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, 0.5s 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: 7ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...