./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 67bb0790f696b3c18eb630bed2fc34fee971c82b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 08:08:13,975 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:08:13,977 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:08:13,983 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:08:13,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:08:13,984 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:08:13,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:08:13,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:08:13,986 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:08:13,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:08:13,988 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:08:13,988 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:08:13,988 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:08:13,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:08:13,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:08:13,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:08:13,990 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:08:13,991 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:08:13,993 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:08:13,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:08:13,994 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:08:13,995 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:08:13,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:08:13,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:08:13,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:08:13,997 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:08:13,998 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:08:13,998 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:08:13,999 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:08:14,000 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:08:14,000 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:08:14,000 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:08:14,000 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:08:14,000 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:08:14,001 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:08:14,002 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:08:14,002 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-10 08:08:14,009 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:08:14,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:08:14,010 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 08:08:14,010 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 08:08:14,010 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 08:08:14,011 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 08:08:14,011 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 08:08:14,011 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 08:08:14,011 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 08:08:14,011 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 08:08:14,011 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 08:08:14,011 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 08:08:14,012 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 08:08:14,013 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:08:14,013 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:08:14,013 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 08:08:14,013 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 08:08:14,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:08:14,013 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:08:14,013 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 08:08:14,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:08:14,014 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 08:08:14,014 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 08:08:14,014 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 08:08:14,015 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_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2018-11-10 08:08:14,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:08:14,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:08:14,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:08:14,048 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:08:14,049 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:08:14,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i [2018-11-10 08:08:14,091 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/data/5d23d4e83/0b5f217705624a01bfec0f4b77e1fc7a/FLAGbfced876f [2018-11-10 08:08:14,503 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:08:14,503 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/sv-benchmarks/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i [2018-11-10 08:08:14,508 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/data/5d23d4e83/0b5f217705624a01bfec0f4b77e1fc7a/FLAGbfced876f [2018-11-10 08:08:14,518 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/data/5d23d4e83/0b5f217705624a01bfec0f4b77e1fc7a [2018-11-10 08:08:14,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:08:14,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 08:08:14,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:08:14,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:08:14,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:08:14,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dc5def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14, skipping insertion in model container [2018-11-10 08:08:14,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:08:14,549 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:08:14,645 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:08:14,647 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:08:14,656 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:08:14,664 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:08:14,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14 WrapperNode [2018-11-10 08:08:14,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:08:14,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 08:08:14,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 08:08:14,665 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 08:08:14,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 08:08:14,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:08:14,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:08:14,685 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:08:14,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... [2018-11-10 08:08:14,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:08:14,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:08:14,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:08:14,696 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:08:14,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:08:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:08:14,870 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:08:14,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:08:14 BoogieIcfgContainer [2018-11-10 08:08:14,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:08:14,870 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 08:08:14,871 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 08:08:14,873 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 08:08:14,873 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 08:08:14,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 08:08:14" (1/3) ... [2018-11-10 08:08:14,874 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@94dbeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 08:08:14, skipping insertion in model container [2018-11-10 08:08:14,874 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 08:08:14,874 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:08:14" (2/3) ... [2018-11-10 08:08:14,875 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@94dbeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 08:08:14, skipping insertion in model container [2018-11-10 08:08:14,875 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 08:08:14,875 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:08:14" (3/3) ... [2018-11-10 08:08:14,876 INFO L375 chiAutomizerObserver]: Analyzing ICFG nest-if3_true-unreach-call_true-termination.i [2018-11-10 08:08:14,914 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 08:08:14,914 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 08:08:14,914 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 08:08:14,914 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 08:08:14,914 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:08:14,914 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:08:14,915 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 08:08:14,915 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:08:14,915 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 08:08:14,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-11-10 08:08:14,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 08:08:14,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:08:14,937 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:08:14,942 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 08:08:14,942 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 08:08:14,943 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 08:08:14,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-11-10 08:08:14,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 08:08:14,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:08:14,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:08:14,945 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 08:08:14,945 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 08:08:14,951 INFO L793 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 17#L14true assume !!(main_~l~0 > 0); 3#L15true assume !!(main_~l~0 < 1000000); 6#L16true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 14#L17-4true [2018-11-10 08:08:14,952 INFO L795 eck$LassoCheckResult]: Loop: 14#L17-4true assume true; 7#L17-1true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 18#L18-4true assume !true; 15#L18-5true assume main_#t~nondet5 != 0;havoc main_#t~nondet5;main_~l~0 := main_~l~0 + 1; 19#L17-3true main_#t~post3 := main_~k~0;main_~k~0 := main_#t~post3 + 1;havoc main_#t~post3; 14#L17-4true [2018-11-10 08:08:14,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:14,957 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2018-11-10 08:08:14,958 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:14,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:14,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:14,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:14,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,023 INFO L82 PathProgramCache]: Analyzing trace with hash 48846447, now seen corresponding path program 1 times [2018-11-10 08:08:15,023 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:15,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:15,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:15,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:15,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:08:15,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 08:08:15,045 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 08:08:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 08:08:15,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 08:08:15,055 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-10 08:08:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:08:15,060 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2018-11-10 08:08:15,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 08:08:15,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2018-11-10 08:08:15,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-10 08:08:15,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 16 transitions. [2018-11-10 08:08:15,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-10 08:08:15,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-10 08:08:15,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2018-11-10 08:08:15,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 08:08:15,066 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-10 08:08:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2018-11-10 08:08:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 08:08:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 08:08:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-11-10 08:08:15,083 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-10 08:08:15,083 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-10 08:08:15,083 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 08:08:15,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2018-11-10 08:08:15,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-10 08:08:15,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:08:15,084 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:08:15,084 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 08:08:15,084 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-10 08:08:15,084 INFO L793 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 53#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 54#L14 assume !!(main_~l~0 > 0); 46#L15 assume !!(main_~l~0 < 1000000); 47#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 48#L17-4 [2018-11-10 08:08:15,085 INFO L795 eck$LassoCheckResult]: Loop: 48#L17-4 assume true; 49#L17-1 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 45#L18-4 assume true; 50#L18-1 assume !(main_~i~0 < main_~n~0); 51#L18-5 assume main_#t~nondet5 != 0;havoc main_#t~nondet5;main_~l~0 := main_~l~0 + 1; 57#L17-3 main_#t~post3 := main_~k~0;main_~k~0 := main_#t~post3 + 1;havoc main_#t~post3; 48#L17-4 [2018-11-10 08:08:15,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,085 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2018-11-10 08:08:15,085 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:15,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:15,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:15,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1513654541, now seen corresponding path program 1 times [2018-11-10 08:08:15,091 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:15,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:15,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:08:15,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2058491851, now seen corresponding path program 1 times [2018-11-10 08:08:15,103 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:15,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:15,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:15,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,170 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:08:15,171 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:08:15,171 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:08:15,171 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:08:15,171 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 08:08:15,171 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:08:15,171 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:08:15,171 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:08:15,171 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration2_Loop [2018-11-10 08:08:15,171 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:08:15,171 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:08:15,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:15,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:15,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:15,273 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:08:15,273 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:15,281 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:08:15,281 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:08:15,288 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:08:15,288 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=7} Honda state: {ULTIMATE.start_main_#t~nondet5=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:15,304 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:08:15,304 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:08:15,307 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:08:15,307 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3=0} Honda state: {ULTIMATE.start_main_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:15,326 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:08:15,326 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:15,345 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 08:08:15,345 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:08:15,678 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 08:08:15,679 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:08:15,679 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:08:15,679 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:08:15,679 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:08:15,679 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 08:08:15,679 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:08:15,680 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:08:15,680 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:08:15,680 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration2_Loop [2018-11-10 08:08:15,680 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:08:15,680 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:08:15,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:15,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:15,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:15,763 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:08:15,766 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 08:08:15,767 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 [2018-11-10 08:08:15,768 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:08:15,768 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:08:15,768 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:08:15,768 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-10 08:08:15,768 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:08:15,770 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-10 08:08:15,770 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:08:15,775 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 08:08:15,776 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 [2018-11-10 08:08:15,776 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:08:15,776 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:08:15,777 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:08:15,777 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:08:15,777 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:08:15,778 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:08:15,778 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:08:15,787 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 08:08:15,793 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 08:08:15,793 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 08:08:15,794 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 08:08:15,795 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 08:08:15,795 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 08:08:15,795 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2018-11-10 08:08:15,796 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 08:08:15,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:15,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:15,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:15,868 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 08:08:15,869 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-10 08:08:15,903 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 23 states and 28 transitions. Complement of second has 6 states. [2018-11-10 08:08:15,904 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 [2018-11-10 08:08:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:08:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-10 08:08:15,905 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-10 08:08:15,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:15,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 6 letters. [2018-11-10 08:08:15,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:15,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 12 letters. [2018-11-10 08:08:15,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:15,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2018-11-10 08:08:15,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 08:08:15,908 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 21 states and 25 transitions. [2018-11-10 08:08:15,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 08:08:15,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-10 08:08:15,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 25 transitions. [2018-11-10 08:08:15,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 08:08:15,909 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-10 08:08:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 25 transitions. [2018-11-10 08:08:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-10 08:08:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 08:08:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-10 08:08:15,910 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-10 08:08:15,910 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-10 08:08:15,910 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 08:08:15,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 25 transitions. [2018-11-10 08:08:15,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 08:08:15,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:08:15,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:08:15,911 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:08:15,911 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 08:08:15,911 INFO L793 eck$LassoCheckResult]: Stem: 153#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 151#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 152#L14 assume !!(main_~l~0 > 0); 141#L15 assume !!(main_~l~0 < 1000000); 142#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 143#L17-4 assume true; 144#L17-1 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 138#L18-4 [2018-11-10 08:08:15,912 INFO L795 eck$LassoCheckResult]: Loop: 138#L18-4 assume true; 146#L18-1 assume !!(main_~i~0 < main_~n~0);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 147#L4 assume !(__VERIFIER_assert_~cond == 0); 154#L4-2 assume { :end_inline___VERIFIER_assert } true; 137#L18-3 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 + 1;havoc main_#t~post4; 138#L18-4 [2018-11-10 08:08:15,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907790, now seen corresponding path program 1 times [2018-11-10 08:08:15,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:15,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:15,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:15,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash 57419270, now seen corresponding path program 1 times [2018-11-10 08:08:15,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:15,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:15,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:15,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:15,925 INFO L82 PathProgramCache]: Analyzing trace with hash 611310745, now seen corresponding path program 1 times [2018-11-10 08:08:15,925 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:15,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:15,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:15,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:15,960 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:08:15,960 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:08:15,960 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:08:15,960 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:08:15,960 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 08:08:15,961 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:08:15,961 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:08:15,961 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:08:15,961 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration3_Loop [2018-11-10 08:08:15,961 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:08:15,961 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:08:15,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:15,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:16,015 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:08:16,016 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:16,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:08:16,018 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:16,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 08:08:16,041 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:08:16,130 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 08:08:16,131 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:08:16,131 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:08:16,131 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:08:16,131 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:08:16,131 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 08:08:16,132 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:08:16,132 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:08:16,132 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:08:16,132 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration3_Loop [2018-11-10 08:08:16,132 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:08:16,132 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:08:16,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:16,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:16,198 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:08:16,198 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 08:08:16,199 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 [2018-11-10 08:08:16,200 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:08:16,200 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:08:16,200 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:08:16,200 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:08:16,200 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:08:16,200 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:08:16,201 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:08:16,202 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 08:08:16,202 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 [2018-11-10 08:08:16,202 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:08:16,203 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:08:16,203 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:08:16,203 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:08:16,203 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:08:16,204 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:08:16,204 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:08:16,211 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 08:08:16,218 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 08:08:16,218 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 08:08:16,219 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 08:08:16,219 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 08:08:16,219 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 08:08:16,219 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-10 08:08:16,220 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 08:08:16,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:16,262 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 08:08:16,262 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 25 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 08:08:16,293 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 25 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 52 states and 61 transitions. Complement of second has 7 states. [2018-11-10 08:08:16,293 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 [2018-11-10 08:08:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:08:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-10 08:08:16,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-10 08:08:16,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 12 letters. Loop has 5 letters. [2018-11-10 08:08:16,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 10 letters. [2018-11-10 08:08:16,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 61 transitions. [2018-11-10 08:08:16,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 08:08:16,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 33 states and 39 transitions. [2018-11-10 08:08:16,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-10 08:08:16,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-10 08:08:16,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 39 transitions. [2018-11-10 08:08:16,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 08:08:16,297 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-10 08:08:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 39 transitions. [2018-11-10 08:08:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-11-10 08:08:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 08:08:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-10 08:08:16,299 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-10 08:08:16,299 INFO L608 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-10 08:08:16,299 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 08:08:16,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 32 transitions. [2018-11-10 08:08:16,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 08:08:16,299 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:08:16,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:08:16,300 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:08:16,300 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 08:08:16,300 INFO L793 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 283#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 284#L14 assume !!(main_~l~0 > 0); 274#L15 assume !!(main_~l~0 < 1000000); 275#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 278#L17-4 assume true; 290#L17-1 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 296#L18-4 assume true; 281#L18-1 assume !(main_~i~0 < main_~n~0); 282#L18-5 assume !(main_#t~nondet5 != 0);havoc main_#t~nondet5; 289#L17-3 main_#t~post3 := main_~k~0;main_~k~0 := main_#t~post3 + 1;havoc main_#t~post3; 291#L17-4 assume true; 276#L17-1 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 271#L18-4 [2018-11-10 08:08:16,300 INFO L795 eck$LassoCheckResult]: Loop: 271#L18-4 assume true; 279#L18-1 assume !!(main_~i~0 < main_~n~0);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 280#L4 assume !(__VERIFIER_assert_~cond == 0); 286#L4-2 assume { :end_inline___VERIFIER_assert } true; 270#L18-3 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 + 1;havoc main_#t~post4; 271#L18-4 [2018-11-10 08:08:16,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:16,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1769314904, now seen corresponding path program 1 times [2018-11-10 08:08:16,301 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:16,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:16,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:16,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:16,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:16,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:16,308 INFO L82 PathProgramCache]: Analyzing trace with hash 57419270, now seen corresponding path program 2 times [2018-11-10 08:08:16,309 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:16,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:16,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:16,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:16,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:08:16,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:16,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1713608177, now seen corresponding path program 1 times [2018-11-10 08:08:16,314 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:08:16,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:08:16,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:16,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:08:16,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:08:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:16,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:08:16,339 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:08:16,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:08:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:16,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:08:16,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-10 08:08:16,388 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:08:16,388 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:08:16,389 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:08:16,389 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:08:16,389 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 08:08:16,389 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:08:16,389 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:08:16,389 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:08:16,389 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration4_Loop [2018-11-10 08:08:16,389 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:08:16,389 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:08:16,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:16,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:16,447 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:08:16,447 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:16,448 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:08:16,448 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:08:16,451 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:08:16,451 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:16,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:08:16,466 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8bf052ab-dd00-45bf-ba39-f2760598eb71/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 [2018-11-10 08:08:16,484 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 08:08:16,484 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:08:16,568 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 08:08:16,569 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:08:16,569 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:08:16,569 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:08:16,569 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:08:16,569 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 08:08:16,569 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:08:16,569 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:08:16,570 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:08:16,570 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration4_Loop [2018-11-10 08:08:16,570 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:08:16,570 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:08:16,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:16,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:08:16,615 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:08:16,615 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 08:08:16,615 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 [2018-11-10 08:08:16,615 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:08:16,616 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:08:16,616 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:08:16,616 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:08:16,616 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:08:16,617 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:08:16,617 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:08:16,621 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 08:08:16,625 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 08:08:16,625 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 08:08:16,625 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 08:08:16,625 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 08:08:16,626 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 08:08:16,626 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-10 08:08:16,626 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 08:08:16,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:16,672 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 08:08:16,672 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 32 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-10 08:08:16,682 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 32 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 43 states and 50 transitions. Complement of second has 7 states. [2018-11-10 08:08:16,684 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 [2018-11-10 08:08:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:08:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-10 08:08:16,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 13 letters. Loop has 5 letters. [2018-11-10 08:08:16,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,685 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 08:08:16,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:16,709 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 08:08:16,709 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 32 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-10 08:08:16,723 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 32 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 43 states and 50 transitions. Complement of second has 7 states. [2018-11-10 08:08:16,724 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 [2018-11-10 08:08:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:08:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-10 08:08:16,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 13 letters. Loop has 5 letters. [2018-11-10 08:08:16,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,725 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 08:08:16,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:08:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:08:16,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:08:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:08:16,748 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 08:08:16,748 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 32 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-10 08:08:16,758 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 32 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 47 states and 54 transitions. Complement of second has 6 states. [2018-11-10 08:08:16,758 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 [2018-11-10 08:08:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:08:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2018-11-10 08:08:16,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 13 letters. Loop has 5 letters. [2018-11-10 08:08:16,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 18 letters. Loop has 5 letters. [2018-11-10 08:08:16,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 13 letters. Loop has 10 letters. [2018-11-10 08:08:16,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:08:16,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 54 transitions. [2018-11-10 08:08:16,763 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 08:08:16,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 0 states and 0 transitions. [2018-11-10 08:08:16,763 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 08:08:16,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 08:08:16,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 08:08:16,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 08:08:16,763 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:08:16,763 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:08:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:08:16,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:08:16,764 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-11-10 08:08:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:08:16,766 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 08:08:16,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 08:08:16,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 08:08:16,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 08:08:16,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 08:08:16,767 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 08:08:16,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:08:16,767 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 08:08:16,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 08:08:16,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 08:08:16 BoogieIcfgContainer [2018-11-10 08:08:16,771 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 08:08:16,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:08:16,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:08:16,772 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:08:16,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:08:14" (3/4) ... [2018-11-10 08:08:16,774 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 08:08:16,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:08:16,775 INFO L168 Benchmark]: Toolchain (without parser) took 2253.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.9 MB in the beginning and 915.8 MB in the end (delta: 45.1 MB). Peak memory consumption was 186.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:08:16,776 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:08:16,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.9 MB in the beginning and 950.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:08:16,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.61 ms. Allocated memory is still 1.0 GB. Free memory is still 950.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:08:16,776 INFO L168 Benchmark]: Boogie Preprocessor took 10.74 ms. Allocated memory is still 1.0 GB. Free memory was 950.1 MB in the beginning and 944.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:08:16,777 INFO L168 Benchmark]: RCFGBuilder took 174.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 08:08:16,777 INFO L168 Benchmark]: BuchiAutomizer took 1900.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 915.8 MB in the end (delta: 213.5 MB). Peak memory consumption was 213.5 MB. Max. memory is 11.5 GB. [2018-11-10 08:08:16,778 INFO L168 Benchmark]: Witness Printer took 2.66 ms. Allocated memory is still 1.2 GB. Free memory is still 915.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:08:16,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.9 MB in the beginning and 950.1 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 19.61 ms. Allocated memory is still 1.0 GB. Free memory is still 950.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.74 ms. Allocated memory is still 1.0 GB. Free memory was 950.1 MB in the beginning and 944.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 174.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1900.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 915.8 MB in the end (delta: 213.5 MB). Peak memory consumption was 213.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.66 ms. Allocated memory is still 1.2 GB. Free memory is still 915.8 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 4 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * i and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 100 SDtfs, 94 SDslu, 49 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf98 lsp94 ukn100 mio100 lsp100 div100 bol100 ite121 ukn100 eq169 hnf91 smp71 dnf97 smp100 tf106 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...