./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 64bit --witnessprinter.graph.data.programhash e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:18:00,537 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:18:00,538 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:18:00,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:18:00,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:18:00,545 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:18:00,546 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:18:00,546 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:18:00,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:18:00,548 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:18:00,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:18:00,550 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:18:00,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:18:00,551 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:18:00,552 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:18:00,552 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:18:00,553 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:18:00,554 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:18:00,555 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:18:00,556 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:18:00,557 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:18:00,558 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:18:00,559 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:18:00,559 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:18:00,559 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:18:00,560 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:18:00,560 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:18:00,560 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:18:00,561 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:18:00,561 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:18:00,562 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:18:00,562 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:18:00,562 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:18:00,562 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:18:00,563 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:18:00,563 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:18:00,563 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 05:18:00,571 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:18:00,571 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:18:00,572 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:18:00,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:18:00,572 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:18:00,572 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 05:18:00,572 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 05:18:00,572 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 05:18:00,572 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 05:18:00,572 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 05:18:00,573 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 05:18:00,573 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:18:00,574 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 05:18:00,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 05:18:00,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:18:00,574 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:18:00,574 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 05:18:00,574 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:18:00,574 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:18:00,574 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 05:18:00,575 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 05:18:00,575 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_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 [2018-11-10 05:18:00,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:18:00,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:18:00,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:18:00,613 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:18:00,614 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:18:00,614 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c [2018-11-10 05:18:00,650 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/data/9f213e601/d0d8896ec06e4186bf4e001fc6869b15/FLAG1614eb2ab [2018-11-10 05:18:00,980 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:18:00,981 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/sv-benchmarks/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c [2018-11-10 05:18:00,984 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/data/9f213e601/d0d8896ec06e4186bf4e001fc6869b15/FLAG1614eb2ab [2018-11-10 05:18:00,994 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/data/9f213e601/d0d8896ec06e4186bf4e001fc6869b15 [2018-11-10 05:18:00,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:18:00,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:18:00,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:18:00,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:18:01,000 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:18:01,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:18:00" (1/1) ... [2018-11-10 05:18:01,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d89bcad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01, skipping insertion in model container [2018-11-10 05:18:01,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:18:00" (1/1) ... [2018-11-10 05:18:01,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:18:01,020 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:18:01,117 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:18:01,119 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:18:01,128 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:18:01,136 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:18:01,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01 WrapperNode [2018-11-10 05:18:01,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:18:01,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:18:01,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:18:01,137 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:18:01,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:18:01,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:18:01,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:18:01,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:18:01,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... [2018-11-10 05:18:01,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:18:01,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:18:01,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:18:01,174 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:18:01,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:18:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:18:01,348 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:18:01,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:18:01 BoogieIcfgContainer [2018-11-10 05:18:01,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:18:01,349 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 05:18:01,349 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 05:18:01,351 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 05:18:01,352 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:18:01,352 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 05:18:00" (1/3) ... [2018-11-10 05:18:01,352 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c9fb92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 05:18:01, skipping insertion in model container [2018-11-10 05:18:01,352 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:18:01,353 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:18:01" (2/3) ... [2018-11-10 05:18:01,353 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c9fb92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 05:18:01, skipping insertion in model container [2018-11-10 05:18:01,353 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:18:01,353 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:18:01" (3/3) ... [2018-11-10 05:18:01,354 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD4_true-termination_true-no-overflow.c [2018-11-10 05:18:01,399 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:18:01,400 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 05:18:01,400 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 05:18:01,400 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 05:18:01,400 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:18:01,400 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:18:01,400 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 05:18:01,400 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:18:01,400 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 05:18:01,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-10 05:18:01,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:18:01,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:18:01,425 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:18:01,429 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 05:18:01,429 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 05:18:01,429 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 05:18:01,430 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-10 05:18:01,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:18:01,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:18:01,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:18:01,431 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 05:18:01,431 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 05:18:01,437 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L13-3true [2018-11-10 05:18:01,438 INFO L795 eck$LassoCheckResult]: Loop: 4#L13-3true assume true; 7#L13-1true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 11#L17-3true assume !true; 9#L17-4true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 4#L13-3true [2018-11-10 05:18:01,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 05:18:01,444 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:01,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:01,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:01,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:01,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-10 05:18:01,503 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:01,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:01,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:01,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:01,523 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 05:18:01,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:18:01,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:18:01,528 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 05:18:01,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:18:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:18:01,539 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-10 05:18:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:18:01,543 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-10 05:18:01,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:18:01,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-10 05:18:01,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:18:01,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-10 05:18:01,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-10 05:18:01,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-10 05:18:01,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-10 05:18:01,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 05:18:01,549 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-10 05:18:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-10 05:18:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-10 05:18:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 05:18:01,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-10 05:18:01,567 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-10 05:18:01,568 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-10 05:18:01,568 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 05:18:01,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-10 05:18:01,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:18:01,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:18:01,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:18:01,569 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 05:18:01,569 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 05:18:01,569 INFO L793 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 31#L13-3 [2018-11-10 05:18:01,569 INFO L795 eck$LassoCheckResult]: Loop: 31#L13-3 assume true; 32#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 36#L17-3 assume true; 34#L17-1 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 35#L17-4 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 31#L13-3 [2018-11-10 05:18:01,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-10 05:18:01,570 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:01,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:01,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:01,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:01,574 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-10 05:18:01,574 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:01,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:01,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:18:01,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-11-10 05:18:01,587 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:01,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:01,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:01,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:01,667 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:01,668 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:01,668 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:01,668 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:01,668 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:18:01,668 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:01,669 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:01,669 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:01,669 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 05:18:01,669 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:01,669 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:01,683 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 05:18:01,689 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 05:18:01,699 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 05:18:01,784 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:01,785 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:01,788 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:01,788 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:01,809 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:18:01,809 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:01,812 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:01,812 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:01,828 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:18:01,829 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:01,831 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:01,832 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:01,852 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:18:01,853 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:02,500 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:18:02,502 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:02,502 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:02,502 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:02,502 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:02,502 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:18:02,502 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:02,502 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:02,502 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:02,502 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 05:18:02,502 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:02,502 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:02,504 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 05:18:02,506 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 05:18:02,508 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 05:18:02,560 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:02,563 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:18:02,564 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 05:18:02,565 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:02,565 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:02,565 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:02,565 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:02,568 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:18:02,568 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:18:02,574 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:18:02,575 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 05:18:02,575 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:02,575 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:02,576 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:02,576 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:02,577 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:18:02,577 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:18:02,584 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:18:02,585 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 05:18:02,585 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:02,585 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:18:02,586 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:02,586 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:02,586 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:02,587 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:18:02,587 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:18:02,600 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:18:02,611 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:18:02,611 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 05:18:02,613 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:18:02,613 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:18:02,613 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:18:02,613 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-10 05:18:02,614 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:18:02,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:02,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:02,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:02,681 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 05:18:02,684 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 05:18:02,684 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-11-10 05:18:02,736 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 23 states and 28 transitions. Complement of second has 9 states. [2018-11-10 05:18:02,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-10 05:18:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 05:18:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-11-10 05:18:02,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 2 letters. Loop has 5 letters. [2018-11-10 05:18:02,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:02,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-10 05:18:02,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:02,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 2 letters. Loop has 10 letters. [2018-11-10 05:18:02,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:02,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2018-11-10 05:18:02,741 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-10 05:18:02,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 23 transitions. [2018-11-10 05:18:02,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-10 05:18:02,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-10 05:18:02,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-11-10 05:18:02,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:18:02,743 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-11-10 05:18:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-11-10 05:18:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2018-11-10 05:18:02,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 05:18:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2018-11-10 05:18:02,744 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2018-11-10 05:18:02,744 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2018-11-10 05:18:02,744 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 05:18:02,744 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2018-11-10 05:18:02,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:18:02,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:18:02,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:18:02,745 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-10 05:18:02,745 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-10 05:18:02,746 INFO L793 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 110#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 111#L13-3 assume true; 116#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 125#L17-3 assume true; 117#L17-1 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 118#L17-3 [2018-11-10 05:18:02,746 INFO L795 eck$LassoCheckResult]: Loop: 118#L17-3 assume true; 124#L17-1 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 118#L17-3 [2018-11-10 05:18:02,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-11-10 05:18:02,746 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:02,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:02,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:02,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:02,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:02,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:02,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-11-10 05:18:02,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:02,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:02,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:02,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:02,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:02,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:02,762 INFO L82 PathProgramCache]: Analyzing trace with hash 150908373, now seen corresponding path program 2 times [2018-11-10 05:18:02,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:02,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:02,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:02,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:02,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:02,800 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:02,800 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:02,800 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:02,800 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:02,800 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:18:02,800 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:02,801 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:02,801 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:02,801 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 05:18:02,801 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:02,801 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:02,802 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 05:18:02,813 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 05:18:02,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:18:02,863 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:02,863 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:02,865 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:02,865 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:02,891 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:18:02,891 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:02,897 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:02,897 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:02,915 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:18:02,916 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:03,015 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:18:03,016 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:03,016 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:03,017 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:03,017 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:03,017 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:18:03,017 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:03,017 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:03,017 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:03,017 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 05:18:03,017 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:03,017 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:03,018 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 05:18:03,025 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 05:18:03,037 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 05:18:03,063 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:03,063 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:18:03,064 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 05:18:03,064 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:03,065 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:03,065 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:03,065 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:03,066 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:18:03,066 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:18:03,068 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:18:03,069 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 05:18:03,069 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:03,069 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:18:03,069 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:03,069 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:03,070 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:03,070 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:18:03,070 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:18:03,073 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:18:03,077 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-10 05:18:03,078 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-10 05:18:03,078 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:18:03,078 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:18:03,078 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:18:03,078 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-10 05:18:03,079 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:18:03,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:03,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:03,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:03,097 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 05:18:03,098 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 05:18:03,098 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-10 05:18:03,105 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 26 states and 31 transitions. Complement of second has 5 states. [2018-11-10 05:18:03,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:18:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:18:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2018-11-10 05:18:03,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-10 05:18:03,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:03,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-10 05:18:03,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:03,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-10 05:18:03,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:03,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2018-11-10 05:18:03,107 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:18:03,108 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 23 states and 28 transitions. [2018-11-10 05:18:03,108 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-10 05:18:03,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-10 05:18:03,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 28 transitions. [2018-11-10 05:18:03,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:18:03,109 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-10 05:18:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 28 transitions. [2018-11-10 05:18:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2018-11-10 05:18:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 05:18:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2018-11-10 05:18:03,110 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2018-11-10 05:18:03,110 INFO L608 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2018-11-10 05:18:03,110 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 05:18:03,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2018-11-10 05:18:03,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:18:03,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:18:03,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:18:03,111 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-10 05:18:03,112 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 05:18:03,112 INFO L793 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 197#L13-3 assume true; 202#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 215#L17-3 assume true; 214#L17-1 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 213#L17-3 assume true; 203#L17-1 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 204#L17-4 [2018-11-10 05:18:03,112 INFO L795 eck$LassoCheckResult]: Loop: 204#L17-4 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 198#L13-3 assume true; 199#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 208#L17-3 assume true; 211#L17-1 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 204#L17-4 [2018-11-10 05:18:03,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash 150908371, now seen corresponding path program 1 times [2018-11-10 05:18:03,112 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:03,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:03,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:03,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:18:03,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:03,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash 52831491, now seen corresponding path program 2 times [2018-11-10 05:18:03,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:03,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:03,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:03,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:03,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:03,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:03,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2052765071, now seen corresponding path program 1 times [2018-11-10 05:18:03,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:03,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:03,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:03,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:18:03,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 05:18:03,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:18:03,178 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:18:03,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:03,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 05:18:03,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:18:03,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-10 05:18:03,308 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:03,308 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:03,308 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:03,308 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:03,308 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:18:03,309 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:03,309 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:03,309 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:03,309 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 05:18:03,309 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:03,309 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:03,310 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 05:18:03,313 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 05:18:03,324 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 05:18:03,370 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:03,370 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:03,373 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:03,373 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:03,390 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:18:03,390 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/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 05:18:03,392 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:03,393 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:03,413 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:18:03,413 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:05,580 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:18:05,582 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:05,582 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:05,582 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:05,582 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:05,582 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:18:05,582 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:05,582 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:05,582 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:05,582 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 05:18:05,583 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:05,583 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:05,583 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 05:18:05,590 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 05:18:05,592 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 05:18:05,634 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:05,634 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:18:05,635 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 05:18:05,635 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:05,635 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:18:05,635 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:05,635 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:05,636 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:05,636 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:18:05,636 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:18:05,640 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:18:05,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:18:05,643 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 05:18:05,644 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:18:05,644 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:18:05,644 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:18:05,644 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-10 05:18:05,644 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:18:05,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:05,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:05,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:05,680 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 05:18:05,680 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 05:18:05,680 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 25 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-10 05:18:05,706 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 25 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 57 states and 71 transitions. Complement of second has 9 states. [2018-11-10 05:18:05,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-10 05:18:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 05:18:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2018-11-10 05:18:05,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 8 letters. Loop has 5 letters. [2018-11-10 05:18:05,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:05,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 13 letters. Loop has 5 letters. [2018-11-10 05:18:05,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:05,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 8 letters. Loop has 10 letters. [2018-11-10 05:18:05,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:05,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 71 transitions. [2018-11-10 05:18:05,709 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-10 05:18:05,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 44 states and 54 transitions. [2018-11-10 05:18:05,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-10 05:18:05,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-10 05:18:05,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2018-11-10 05:18:05,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:18:05,710 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-11-10 05:18:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2018-11-10 05:18:05,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-10 05:18:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 05:18:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2018-11-10 05:18:05,713 INFO L728 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2018-11-10 05:18:05,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:18:05,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:18:05,714 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 9 states. [2018-11-10 05:18:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:18:05,786 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-11-10 05:18:05,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:18:05,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 48 transitions. [2018-11-10 05:18:05,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-10 05:18:05,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 34 states and 40 transitions. [2018-11-10 05:18:05,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-10 05:18:05,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2018-11-10 05:18:05,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 40 transitions. [2018-11-10 05:18:05,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:18:05,789 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-11-10 05:18:05,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 40 transitions. [2018-11-10 05:18:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2018-11-10 05:18:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 05:18:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-11-10 05:18:05,791 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-11-10 05:18:05,791 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-11-10 05:18:05,791 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 05:18:05,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 26 transitions. [2018-11-10 05:18:05,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-10 05:18:05,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:18:05,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:18:05,792 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-10 05:18:05,792 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-10 05:18:05,792 INFO L793 eck$LassoCheckResult]: Stem: 483#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 475#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 476#L13-3 assume true; 491#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 490#L17-3 assume true; 489#L17-1 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 488#L17-3 assume true; 487#L17-1 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 485#L17-4 [2018-11-10 05:18:05,792 INFO L795 eck$LassoCheckResult]: Loop: 485#L17-4 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 477#L13-3 assume true; 478#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 484#L17-3 assume true; 479#L17-1 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 480#L17-3 assume true; 486#L17-1 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 485#L17-4 [2018-11-10 05:18:05,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash 150908371, now seen corresponding path program 2 times [2018-11-10 05:18:05,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:05,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:05,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:05,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:05,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:05,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash -768542263, now seen corresponding path program 1 times [2018-11-10 05:18:05,799 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:05,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:05,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:05,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:18:05,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:05,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:05,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1317241929, now seen corresponding path program 2 times [2018-11-10 05:18:05,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:05,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:05,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:05,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:18:05,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:05,873 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:05,873 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:05,873 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:05,873 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:05,873 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:18:05,873 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:05,873 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:05,874 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:05,874 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 05:18:05,874 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:05,874 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:05,874 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 05:18:05,881 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 05:18:05,882 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 05:18:05,914 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:05,914 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:05,916 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:05,916 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:05,948 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:18:05,948 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:12,011 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:18:12,013 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:12,013 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:12,013 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:12,013 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:12,013 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:18:12,013 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:12,013 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:12,013 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:12,014 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 05:18:12,014 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:12,014 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:12,015 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 05:18:12,021 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 05:18:12,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:18:12,051 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:12,051 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:18:12,051 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 05:18:12,052 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:12,052 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:18:12,052 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:12,052 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:12,052 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:12,053 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:18:12,053 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:18:12,057 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:18:12,059 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:18:12,059 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 05:18:12,060 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:18:12,060 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:18:12,060 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:18:12,060 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-10 05:18:12,060 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:18:12,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 05:18:12,090 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 05:18:12,090 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 26 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 05:18:12,109 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 26 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 44 states and 54 transitions. Complement of second has 6 states. [2018-11-10 05:18:12,109 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 05:18:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 05:18:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 05:18:12,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 7 letters. [2018-11-10 05:18:12,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 15 letters. Loop has 7 letters. [2018-11-10 05:18:12,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 14 letters. [2018-11-10 05:18:12,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2018-11-10 05:18:12,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-10 05:18:12,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 36 states and 44 transitions. [2018-11-10 05:18:12,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-10 05:18:12,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-10 05:18:12,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2018-11-10 05:18:12,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:18:12,113 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-10 05:18:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2018-11-10 05:18:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-10 05:18:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 05:18:12,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-11-10 05:18:12,115 INFO L728 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-10 05:18:12,115 INFO L608 BuchiCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-10 05:18:12,115 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 05:18:12,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 39 transitions. [2018-11-10 05:18:12,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-10 05:18:12,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:18:12,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:18:12,116 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2018-11-10 05:18:12,116 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-10 05:18:12,116 INFO L793 eck$LassoCheckResult]: Stem: 621#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 611#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 612#L13-3 assume true; 639#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 638#L17-3 assume true; 636#L17-1 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 634#L17-3 assume true; 629#L17-1 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 630#L17-4 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 613#L13-3 assume true; 614#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 618#L17-3 [2018-11-10 05:18:12,116 INFO L795 eck$LassoCheckResult]: Loop: 618#L17-3 assume true; 617#L17-1 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 618#L17-3 [2018-11-10 05:18:12,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:12,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1119453267, now seen corresponding path program 3 times [2018-11-10 05:18:12,116 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:12,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:12,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:12,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:18:12,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:12,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-11-10 05:18:12,124 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:12,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:12,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:18:12,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:12,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2052765069, now seen corresponding path program 4 times [2018-11-10 05:18:12,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:18:12,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:18:12,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:12,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:18:12,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:18:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:18:12,157 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:12,157 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:12,157 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:12,157 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:12,157 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:18:12,157 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:12,157 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:12,157 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:12,157 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-10 05:18:12,157 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:12,157 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:12,158 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 05:18:12,164 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 05:18:12,166 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 05:18:12,192 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:12,192 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:12,209 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:12,210 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:12,226 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:18:12,226 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:12,229 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:12,229 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:12,245 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:18:12,245 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:12,249 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:18:12,249 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b0b40bb-1063-48ee-8cac-f6e4219ede69/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:12,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:18:12,268 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:18:12,356 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:18:12,357 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:18:12,358 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:18:12,358 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:18:12,358 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:18:12,358 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:18:12,358 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:18:12,358 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:18:12,358 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:18:12,358 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-10 05:18:12,358 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:18:12,358 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:18:12,359 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 05:18:12,360 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 05:18:12,362 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 05:18:12,382 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:18:12,382 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:18:12,382 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 05:18:12,382 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:12,383 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:12,383 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:12,383 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:12,383 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:18:12,383 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:18:12,385 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:18:12,385 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 05:18:12,385 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:12,385 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:12,385 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:12,385 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:12,386 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 05:18:12,386 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 05:18:12,389 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:18:12,389 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 05:18:12,389 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:18:12,389 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:18:12,390 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:18:12,390 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:18:12,390 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:18:12,390 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:18:12,390 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:18:12,392 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:18:12,394 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-10 05:18:12,395 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-10 05:18:12,395 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:18:12,395 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:18:12,395 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:18:12,395 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-10 05:18:12,395 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:18:12,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,414 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 05:18:12,414 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 05:18:12,415 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-11-10 05:18:12,423 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 48 states and 57 transitions. Complement of second has 5 states. [2018-11-10 05:18:12,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:18:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:18:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-10 05:18:12,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-10 05:18:12,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,424 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 05:18:12,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,440 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 05:18:12,440 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 05:18:12,440 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-11-10 05:18:12,445 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 48 states and 57 transitions. Complement of second has 5 states. [2018-11-10 05:18:12,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:18:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:18:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-10 05:18:12,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-10 05:18:12,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,446 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 05:18:12,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:18:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:18:12,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:18:12,458 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 05:18:12,458 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 05:18:12,458 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-11-10 05:18:12,469 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 39 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 54 states and 67 transitions. Complement of second has 4 states. [2018-11-10 05:18:12,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 05:18:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 05:18:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-10 05:18:12,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-10 05:18:12,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-10 05:18:12,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 05:18:12,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:18:12,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2018-11-10 05:18:12,473 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 05:18:12,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 0 states and 0 transitions. [2018-11-10 05:18:12,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 05:18:12,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 05:18:12,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 05:18:12,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 05:18:12,473 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:18:12,473 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:18:12,473 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:18:12,473 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-10 05:18:12,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:18:12,474 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 05:18:12,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 05:18:12,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 05:18:12 BoogieIcfgContainer [2018-11-10 05:18:12,478 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 05:18:12,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:18:12,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:18:12,479 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:18:12,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:18:01" (3/4) ... [2018-11-10 05:18:12,481 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 05:18:12,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:18:12,482 INFO L168 Benchmark]: Toolchain (without parser) took 11484.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 959.3 MB in the beginning and 1.0 GB in the end (delta: -55.5 MB). Peak memory consumption was 87.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:12,483 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:18:12,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.11 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:12,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.09 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:18:12,484 INFO L168 Benchmark]: Boogie Preprocessor took 14.56 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:12,484 INFO L168 Benchmark]: RCFGBuilder took 175.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:12,485 INFO L168 Benchmark]: BuchiAutomizer took 11129.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 118.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:12,485 INFO L168 Benchmark]: Witness Printer took 2.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:18:12,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.11 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.09 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.56 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 11129.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 118.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 5 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.0s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 10.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 28 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 32 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 78 SDtfs, 75 SDslu, 42 SDs, 0 SdLazy, 103 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf95 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf108 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 9.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...