./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edcc597a46f9ad79563531282ca675b8b1d7c4bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:34:38,959 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:38,960 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:38,967 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:38,967 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:38,968 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:38,968 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:38,969 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:38,970 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:38,971 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:38,972 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:38,972 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:38,973 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:38,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:38,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:38,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:38,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:38,977 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:38,979 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:38,980 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:38,981 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:38,981 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:38,984 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:38,984 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:38,984 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:38,985 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:38,986 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:38,987 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:38,987 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:38,988 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:38,988 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:38,989 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:38,989 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:38,989 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:38,990 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:38,991 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:38,991 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 08:34:39,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:39,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:39,002 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:39,002 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:39,003 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:39,003 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 08:34:39,003 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 08:34:39,003 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 08:34:39,003 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 08:34:39,003 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 08:34:39,003 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 08:34:39,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:39,004 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:39,004 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 08:34:39,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:39,004 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:39,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:39,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 08:34:39,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 08:34:39,005 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 08:34:39,005 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:39,005 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:39,005 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 08:34:39,005 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:39,005 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 08:34:39,006 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:39,006 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:39,006 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 08:34:39,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:39,006 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:39,006 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 08:34:39,007 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 08:34:39,007 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2018-11-18 08:34:39,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:39,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:39,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:39,045 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:39,045 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:39,045 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 08:34:39,086 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/data/a9a5e2d8a/8fe4a67e271c4f3aa48aa4a96a5a6bf4/FLAGf84c79edb [2018-11-18 08:34:39,411 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:39,412 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 08:34:39,416 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/data/a9a5e2d8a/8fe4a67e271c4f3aa48aa4a96a5a6bf4/FLAGf84c79edb [2018-11-18 08:34:39,845 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/bin-2019/uautomizer/data/a9a5e2d8a/8fe4a67e271c4f3aa48aa4a96a5a6bf4 [2018-11-18 08:34:39,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:39,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:34:39,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:39,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:39,851 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:39,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:39,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac16c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39, skipping insertion in model container [2018-11-18 08:34:39,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:39,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:39,869 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:39,965 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:39,967 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:39,975 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:39,984 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:39,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39 WrapperNode [2018-11-18 08:34:39,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:39,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:39,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:34:39,985 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:34:39,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:39,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:40,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:40,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:40,011 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:40,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... [2018-11-18 08:34:40,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:40,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:40,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:40,026 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:40,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-18 08:34:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-18 08:34:40,215 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:40,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:40 BoogieIcfgContainer [2018-11-18 08:34:40,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:40,217 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 08:34:40,217 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 08:34:40,219 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 08:34:40,220 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:40,220 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:34:39" (1/3) ... [2018-11-18 08:34:40,221 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73472d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:40, skipping insertion in model container [2018-11-18 08:34:40,221 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:40,221 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:39" (2/3) ... [2018-11-18 08:34:40,221 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73472d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:40, skipping insertion in model container [2018-11-18 08:34:40,221 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:40,222 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:40" (3/3) ... [2018-11-18 08:34:40,223 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 08:34:40,275 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:40,276 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 08:34:40,276 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 08:34:40,276 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 08:34:40,276 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:40,276 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:40,277 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 08:34:40,277 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:40,277 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 08:34:40,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-18 08:34:40,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:40,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:40,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:40,320 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 08:34:40,321 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 08:34:40,321 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 08:34:40,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-18 08:34:40,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:40,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:40,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:40,323 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 08:34:40,323 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 08:34:40,330 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 17#f91ENTRYtrue [2018-11-18 08:34:40,330 INFO L796 eck$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 08:34:40,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,335 INFO L82 PathProgramCache]: Analyzing trace with hash 29877, now seen corresponding path program 1 times [2018-11-18 08:34:40,337 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:40,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:40,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:40,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,399 INFO L82 PathProgramCache]: Analyzing trace with hash 44821, now seen corresponding path program 1 times [2018-11-18 08:34:40,399 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:40,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:40,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:40,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash 890080737, now seen corresponding path program 1 times [2018-11-18 08:34:40,410 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:40,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:40,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:40,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,484 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:40,485 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:40,485 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:40,485 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:40,485 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:40,486 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,486 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:40,486 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:40,486 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-18 08:34:40,486 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:40,486 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:40,510 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 08:34:40,515 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 08:34:40,517 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 08:34:40,522 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 08:34:40,523 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 08:34:40,564 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:40,565 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:40,568 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,568 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,573 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,573 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:40,588 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,589 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,591 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,591 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:40,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,607 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:40,623 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:40,624 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,641 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:40,642 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:40,642 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:40,642 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:40,642 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:40,643 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:40,643 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,643 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:40,643 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:40,643 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-18 08:34:40,643 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:40,643 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:40,644 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 08:34:40,646 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 08:34:40,648 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 08:34:40,662 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 08:34:40,665 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 08:34:40,696 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:40,699 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:40,701 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 08:34:40,702 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,702 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:40,702 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,703 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,703 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,704 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:40,704 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,707 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,708 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 08:34:40,708 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,708 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:40,708 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,709 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,709 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,709 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:40,709 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,711 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,711 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 08:34:40,712 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,712 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:40,712 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,712 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,712 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,713 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:40,713 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,718 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:40,723 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:34:40,723 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:34:40,725 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:40,725 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:40,725 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:40,725 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-11-18 08:34:40,726 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:40,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:40,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:40,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:40,832 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 08:34:40,841 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 08:34:40,842 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2018-11-18 08:34:40,959 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 08:34:40,960 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 08:34:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 08:34:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 08:34:40,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-18 08:34:40,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:40,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 08:34:40,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:40,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-18 08:34:40,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:40,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2018-11-18 08:34:40,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:40,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 19 states and 25 transitions. [2018-11-18 08:34:40,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 08:34:40,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-18 08:34:40,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2018-11-18 08:34:40,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:40,977 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-11-18 08:34:40,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2018-11-18 08:34:40,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-18 08:34:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 08:34:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2018-11-18 08:34:40,996 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-18 08:34:40,997 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-18 08:34:40,997 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 08:34:40,997 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2018-11-18 08:34:40,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:40,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:40,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:40,998 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:40,998 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:40,998 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 103#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 104#L26 call main_#t~ret3 := f91(main_~x~0);< 110#f91ENTRY ~x := #in~x; 116#L16 assume !(~x > 100); 107#L19 call #t~ret0 := f91(11 + ~x);< 113#f91ENTRY ~x := #in~x; 117#L16 assume ~x > 100;#res := ~x - 10; 114#f91FINAL assume true; 115#f91EXIT >#27#return; 108#L19-1 [2018-11-18 08:34:40,998 INFO L796 eck$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 08:34:40,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1243034264, now seen corresponding path program 1 times [2018-11-18 08:34:40,999 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:40,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:40,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:40,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,006 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 1 times [2018-11-18 08:34:41,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:41,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:41,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:41,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash -291973751, now seen corresponding path program 1 times [2018-11-18 08:34:41,012 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:41,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:41,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:41,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,104 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:41,104 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:41,105 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:41,105 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:41,105 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:41,105 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,105 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:41,105 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:41,105 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-18 08:34:41,105 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:41,105 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:41,107 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 08:34:41,114 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 08:34:41,116 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 08:34:41,160 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:41,160 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:41,162 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,162 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:41,191 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:41,191 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:53,224 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-18 08:34:53,227 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:53,227 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:53,227 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:53,227 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:53,227 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:53,228 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:53,228 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:53,228 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:53,228 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-18 08:34:53,228 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:53,228 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:53,229 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 08:34:53,236 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 08:34:53,237 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 08:34:53,264 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:53,264 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:53,264 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 08:34:53,265 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:53,266 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:53,266 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:53,266 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:53,266 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:53,267 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:53,267 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:53,273 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:53,277 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:34:53,277 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:34:53,278 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:53,278 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:53,278 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:53,278 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-18 08:34:53,279 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:53,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:53,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:53,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:53,415 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 08:34:53,415 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 08:34:53,416 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-11-18 08:34:53,576 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 08:34:53,577 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 08:34:53,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 08:34:53,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-18 08:34:53,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-18 08:34:53,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:53,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2018-11-18 08:34:53,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:53,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2018-11-18 08:34:53,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:53,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2018-11-18 08:34:53,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-18 08:34:53,585 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2018-11-18 08:34:53,585 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-18 08:34:53,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-18 08:34:53,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2018-11-18 08:34:53,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:53,586 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2018-11-18 08:34:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2018-11-18 08:34:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-11-18 08:34:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 08:34:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2018-11-18 08:34:53,591 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-11-18 08:34:53,592 INFO L608 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2018-11-18 08:34:53,592 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 08:34:53,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2018-11-18 08:34:53,593 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-18 08:34:53,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:53,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:53,594 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:53,594 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 08:34:53,594 INFO L794 eck$LassoCheckResult]: Stem: 302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 289#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 290#L26 call main_#t~ret3 := f91(main_~x~0);< 291#f91ENTRY ~x := #in~x; 316#L16 assume !(~x > 100); 299#L19 call #t~ret0 := f91(11 + ~x);< 308#f91ENTRY ~x := #in~x; 314#L16 assume ~x > 100;#res := ~x - 10; 321#f91FINAL assume true; 320#f91EXIT >#27#return; 294#L19-1 call #t~ret1 := f91(#t~ret0);< 305#f91ENTRY ~x := #in~x; 324#L16 assume !(~x > 100); 306#L19 [2018-11-18 08:34:53,594 INFO L796 eck$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 08:34:53,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:53,594 INFO L82 PathProgramCache]: Analyzing trace with hash -25705320, now seen corresponding path program 2 times [2018-11-18 08:34:53,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:53,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:53,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:53,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:53,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:53,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash 55261, now seen corresponding path program 2 times [2018-11-18 08:34:53,604 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:53,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:53,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:53,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:53,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:53,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1282983962, now seen corresponding path program 3 times [2018-11-18 08:34:53,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:53,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:53,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:53,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:53,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:53,659 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 08:34:53,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:53,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 08:34:53,687 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:53,687 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:53,687 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:53,687 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:53,687 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:53,687 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:53,687 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:53,688 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:53,688 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-18 08:34:53,688 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:53,688 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:53,688 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 08:34:53,690 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 08:34:53,691 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 08:34:53,692 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 08:34:53,716 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:53,716 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:53,719 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:53,719 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:53,721 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:53,721 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:53,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:53,737 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:53,739 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:53,739 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:53,754 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:53,754 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:53,756 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:53,756 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:53,771 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:53,771 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:34:53,792 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:53,792 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:05,814 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-18 08:35:05,817 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:35:05,817 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:35:05,817 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:35:05,817 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:35:05,817 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:35:05,818 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:35:05,818 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:35:05,818 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:35:05,818 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-18 08:35:05,818 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:35:05,818 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:35:05,819 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 08:35:05,822 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 08:35:05,823 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 08:35:05,824 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 08:35:05,847 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:35:05,847 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:35:05,847 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 08:35:05,848 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:05,848 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:05,848 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:05,848 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:05,848 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:05,849 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:05,849 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:05,849 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:35:05,850 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 08:35:05,850 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:05,850 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:05,850 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:05,850 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:05,851 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:05,851 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:05,851 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:05,852 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:35:05,852 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 08:35:05,852 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:05,852 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:05,852 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:05,853 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:05,853 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:05,853 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:05,853 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:05,854 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:35:05,858 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 08:35:05,859 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:05,859 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:05,859 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:05,859 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:05,859 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:05,860 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:05,860 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:05,863 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:35:05,866 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:35:05,866 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:35:05,866 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:35:05,866 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:35:05,866 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:35:05,867 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-11-18 08:35:05,867 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:35:05,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:05,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:05,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:05,939 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 08:35:05,939 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 08:35:05,939 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 08:35:05,982 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 08:35:05,983 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 08:35:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 08:35:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-11-18 08:35:05,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-18 08:35:05,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:05,984 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:35:05,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:06,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:06,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:06,039 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 08:35:06,039 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 08:35:06,039 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 08:35:06,078 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 08:35:06,079 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 08:35:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 08:35:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-11-18 08:35:06,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-18 08:35:06,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:06,080 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:35:06,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:06,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:06,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:06,149 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 08:35:06,150 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 08:35:06,150 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 08:35:06,197 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 08:35:06,197 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 08:35:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 08:35:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2018-11-18 08:35:06,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-18 08:35:06,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:06,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-18 08:35:06,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:06,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2018-11-18 08:35:06,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:06,199 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2018-11-18 08:35:06,201 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 08:35:06,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2018-11-18 08:35:06,202 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-18 08:35:06,202 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-18 08:35:06,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2018-11-18 08:35:06,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:35:06,203 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2018-11-18 08:35:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2018-11-18 08:35:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-11-18 08:35:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 08:35:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2018-11-18 08:35:06,206 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2018-11-18 08:35:06,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:35:06,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:06,209 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2018-11-18 08:35:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:06,272 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2018-11-18 08:35:06,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 08:35:06,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2018-11-18 08:35:06,275 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-18 08:35:06,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2018-11-18 08:35:06,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 08:35:06,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 08:35:06,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2018-11-18 08:35:06,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:35:06,276 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2018-11-18 08:35:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2018-11-18 08:35:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-11-18 08:35:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-18 08:35:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2018-11-18 08:35:06,280 INFO L728 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-18 08:35:06,280 INFO L608 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-18 08:35:06,280 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 08:35:06,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2018-11-18 08:35:06,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-18 08:35:06,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:35:06,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:35:06,282 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-18 08:35:06,282 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-11-18 08:35:06,282 INFO L794 eck$LassoCheckResult]: Stem: 840#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 831#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 832#L26 call main_#t~ret3 := f91(main_~x~0);< 839#f91ENTRY ~x := #in~x; 862#L16 assume !(~x > 100); 847#L19 call #t~ret0 := f91(11 + ~x);< 848#f91ENTRY ~x := #in~x; 870#L16 assume !(~x > 100); 866#L19 call #t~ret0 := f91(11 + ~x);< 868#f91ENTRY ~x := #in~x; 871#L16 assume ~x > 100;#res := ~x - 10; 869#f91FINAL assume true; 867#f91EXIT >#27#return; 837#L19-1 call #t~ret1 := f91(#t~ret0);< 844#f91ENTRY ~x := #in~x; 855#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 886#f91EXIT >#29#return; 860#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 884#f91FINAL assume true; 883#f91EXIT >#27#return; 841#L19-1 call #t~ret1 := f91(#t~ret0);< 842#f91ENTRY [2018-11-18 08:35:06,282 INFO L796 eck$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 08:35:06,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:06,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1708035509, now seen corresponding path program 1 times [2018-11-18 08:35:06,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:06,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:06,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:06,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:06,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:06,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:06,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1732488063, now seen corresponding path program 1 times [2018-11-18 08:35:06,293 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:06,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:06,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:06,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:06,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:06,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1682902795, now seen corresponding path program 2 times [2018-11-18 08:35:06,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:06,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:06,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:06,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:06,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:06,348 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 08:35:06,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:06,348 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:06,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 08:35:06,364 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 08:35:06,364 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:35:06,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:06,373 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 08:35:06,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:06,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 08:35:06,528 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:35:06,528 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:35:06,528 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:35:06,528 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:35:06,528 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:35:06,528 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:35:06,528 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:35:06,528 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:35:06,528 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-18 08:35:06,528 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:35:06,529 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:35:06,529 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 08:35:06,534 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 08:35:06,535 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 08:35:06,537 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 08:35:06,538 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 08:35:06,578 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:35:06,578 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:06,587 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:06,587 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:06,594 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:35:06,594 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:06,619 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:06,619 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:06,621 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:35:06,621 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:06,647 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:06,647 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:06,649 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:35:06,649 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:06,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:06,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:06,667 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:35:06,667 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:06,684 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:06,684 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:06,704 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:35:06,704 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:07,018 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:35:07,019 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:35:07,020 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:35:07,020 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:35:07,020 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:35:07,020 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:35:07,020 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:35:07,020 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:35:07,020 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:35:07,020 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-18 08:35:07,020 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:35:07,020 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:35:07,020 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 08:35:07,022 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 08:35:07,022 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 08:35:07,023 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 08:35:07,024 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 08:35:07,040 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:35:07,040 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:35:07,041 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 08:35:07,041 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:07,041 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:07,041 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:07,041 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:07,042 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:07,042 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:07,042 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:07,043 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:35:07,043 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 08:35:07,043 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:07,044 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:07,044 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:07,044 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:07,044 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:07,044 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:07,044 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:07,045 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:35:07,045 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 08:35:07,045 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:07,046 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:07,046 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:07,046 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:07,046 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:07,046 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:07,046 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:07,047 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:35:07,047 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 08:35:07,047 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:07,048 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:07,048 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:07,048 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:07,048 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:07,048 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:07,048 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:07,049 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:35:07,049 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 08:35:07,050 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:07,050 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:07,050 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:07,050 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:07,050 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:07,050 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:07,050 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:07,053 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:35:07,054 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:35:07,054 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:35:07,055 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:35:07,055 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:35:07,055 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:35:07,055 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-11-18 08:35:07,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:35:07,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,213 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 08:35:07,214 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 08:35:07,214 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-18 08:35:07,447 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 08:35:07,447 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 08:35:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 08:35:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-11-18 08:35:07,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-18 08:35:07,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:07,448 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:35:07,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,588 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 08:35:07,588 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 08:35:07,588 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-18 08:35:07,890 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 08:35:07,891 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 08:35:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 08:35:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2018-11-18 08:35:07,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-18 08:35:07,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:07,892 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:35:07,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,034 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 08:35:08,034 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 08:35:08,035 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-18 08:35:08,495 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 08:35:08,496 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 08:35:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 08:35:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 49 transitions. [2018-11-18 08:35:08,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2018-11-18 08:35:08,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:08,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2018-11-18 08:35:08,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:08,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2018-11-18 08:35:08,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:08,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2018-11-18 08:35:08,507 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-11-18 08:35:08,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2018-11-18 08:35:08,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2018-11-18 08:35:08,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2018-11-18 08:35:08,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2018-11-18 08:35:08,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:35:08,513 INFO L705 BuchiCegarLoop]: Abstraction has 203 states and 269 transitions. [2018-11-18 08:35:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2018-11-18 08:35:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2018-11-18 08:35:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-18 08:35:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2018-11-18 08:35:08,527 INFO L728 BuchiCegarLoop]: Abstraction has 157 states and 198 transitions. [2018-11-18 08:35:08,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 08:35:08,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:35:08,528 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand 9 states. [2018-11-18 08:35:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:08,649 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2018-11-18 08:35:08,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 08:35:08,651 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2018-11-18 08:35:08,653 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 08:35:08,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2018-11-18 08:35:08,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2018-11-18 08:35:08,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2018-11-18 08:35:08,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2018-11-18 08:35:08,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:35:08,655 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 123 transitions. [2018-11-18 08:35:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2018-11-18 08:35:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2018-11-18 08:35:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-18 08:35:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2018-11-18 08:35:08,662 INFO L728 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-11-18 08:35:08,662 INFO L608 BuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2018-11-18 08:35:08,662 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 08:35:08,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2018-11-18 08:35:08,663 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 08:35:08,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:35:08,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:35:08,664 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2018-11-18 08:35:08,664 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:08,665 INFO L794 eck$LassoCheckResult]: Stem: 2841#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2832#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2833#L26 call main_#t~ret3 := f91(main_~x~0);< 2840#f91ENTRY ~x := #in~x; 2896#L16 assume !(~x > 100); 2881#L19 call #t~ret0 := f91(11 + ~x);< 2883#f91ENTRY ~x := #in~x; 2894#L16 assume !(~x > 100); 2882#L19 call #t~ret0 := f91(11 + ~x);< 2892#f91ENTRY ~x := #in~x; 2895#L16 assume ~x > 100;#res := ~x - 10; 2893#f91FINAL assume true; 2891#f91EXIT >#27#return; 2887#L19-1 call #t~ret1 := f91(#t~ret0);< 2889#f91ENTRY ~x := #in~x; 2908#L16 assume ~x > 100;#res := ~x - 10; 2897#f91FINAL assume true; 2886#f91EXIT >#29#return; 2885#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 2884#f91FINAL assume true; 2880#f91EXIT >#27#return; 2874#L19-1 call #t~ret1 := f91(#t~ret0);< 2879#f91ENTRY ~x := #in~x; 2877#L16 assume !(~x > 100); 2843#L19 call #t~ret0 := f91(11 + ~x);< 2850#f91ENTRY ~x := #in~x; 2858#L16 assume !(~x > 100); 2844#L19 call #t~ret0 := f91(11 + ~x);< 2851#f91ENTRY ~x := #in~x; 2931#L16 assume ~x > 100;#res := ~x - 10; 2930#f91FINAL assume true; 2859#f91EXIT >#27#return; 2842#L19-1 [2018-11-18 08:35:08,665 INFO L796 eck$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 08:35:08,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash -517290798, now seen corresponding path program 3 times [2018-11-18 08:35:08,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:08,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:08,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:08,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:08,733 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 08:35:08,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:08,733 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:08,743 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 08:35:08,760 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 08:35:08,760 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:35:08,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,764 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 08:35:08,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 08:35:08,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-18 08:35:08,780 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 08:35:08,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,781 INFO L82 PathProgramCache]: Analyzing trace with hash 742678306, now seen corresponding path program 2 times [2018-11-18 08:35:08,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:08,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:08,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:08,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:35:08,832 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:35:08,832 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:35:08,832 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:35:08,832 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:35:08,832 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:35:08,832 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:35:08,833 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:35:08,833 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:35:08,833 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-18 08:35:08,833 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:35:08,833 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:35:08,833 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 08:35:08,836 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 08:35:08,837 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 08:35:08,858 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:35:08,858 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:08,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:08,862 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:08,864 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:35:08,864 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:08,879 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:08,879 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:08,881 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:35:08,881 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_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:08,896 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:35:08,896 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88480c24-9fb2-48d1-b9dd-6577dd4711e3/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 08:35:08,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:35:08,917 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:35:20,947 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-18 08:35:20,949 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:35:20,949 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:35:20,949 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:35:20,950 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:35:20,950 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:35:20,950 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:35:20,950 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:35:20,950 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:35:20,950 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-18 08:35:20,950 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:35:20,950 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:35:20,950 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 08:35:20,965 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 08:35:20,966 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 08:35:20,982 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:35:20,983 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:35:20,983 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 08:35:20,983 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:35:20,983 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:35:20,984 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:35:20,984 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:35:20,984 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:35:20,984 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:35:20,984 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:35:20,986 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:35:20,989 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 08:35:20,989 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 08:35:20,989 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:35:20,989 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:35:20,989 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:35:20,989 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-18 08:35:20,990 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:35:20,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:21,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:21,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:21,111 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 08:35:21,111 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 08:35:21,111 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-18 08:35:21,216 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 08:35:21,217 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 08:35:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 08:35:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-18 08:35:21,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-18 08:35:21,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:21,218 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:35:21,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:21,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:21,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:21,316 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 08:35:21,316 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 08:35:21,316 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-18 08:35:21,418 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 08:35:21,419 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 08:35:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 08:35:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2018-11-18 08:35:21,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-18 08:35:21,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:21,420 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 08:35:21,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:21,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:21,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:21,518 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 08:35:21,518 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 08:35:21,518 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-18 08:35:21,647 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 08:35:21,648 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 08:35:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 08:35:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2018-11-18 08:35:21,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2018-11-18 08:35:21,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:21,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2018-11-18 08:35:21,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:21,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2018-11-18 08:35:21,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:35:21,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2018-11-18 08:35:21,652 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:35:21,652 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2018-11-18 08:35:21,652 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 08:35:21,652 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 08:35:21,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 08:35:21,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:35:21,652 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:35:21,653 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:35:21,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 08:35:21,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:35:21,653 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-18 08:35:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:21,653 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 08:35:21,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:35:21,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 08:35:21,654 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:35:21,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 08:35:21,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 08:35:21,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 08:35:21,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 08:35:21,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:35:21,654 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:35:21,654 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:35:21,654 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:35:21,654 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 08:35:21,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:35:21,655 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:35:21,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 08:35:21,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:35:21 BoogieIcfgContainer [2018-11-18 08:35:21,660 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 08:35:21,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:35:21,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:35:21,662 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:35:21,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:40" (3/4) ... [2018-11-18 08:35:21,665 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:35:21,666 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:35:21,666 INFO L168 Benchmark]: Toolchain (without parser) took 41818.50 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 275.8 MB). Free memory was 959.1 MB in the beginning and 811.2 MB in the end (delta: 148.0 MB). Peak memory consumption was 423.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:21,667 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:21,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.52 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:21,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.66 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:21,670 INFO L168 Benchmark]: Boogie Preprocessor took 11.20 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:21,670 INFO L168 Benchmark]: RCFGBuilder took 190.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:21,670 INFO L168 Benchmark]: BuchiAutomizer took 41443.95 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Free memory was 1.1 GB in the beginning and 811.2 MB in the end (delta: 304.8 MB). Peak memory consumption was 444.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:21,671 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 1.3 GB. Free memory is still 811.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:21,673 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.52 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 25.66 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.20 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 190.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41443.95 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Free memory was 1.1 GB in the beginning and 811.2 MB in the end (delta: 304.8 MB). Peak memory consumption was 444.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.37 ms. Allocated memory is still 1.3 GB. Free memory is still 811.2 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 41.4s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 38.0s. Construction of modules took 0.4s. Büchi inclusion checks took 2.6s. 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, 0.4s 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: 36.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...