./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD3_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_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/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 aae625cda61f26fa063b78c3d3a58aff5ded8a89 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:08:36,582 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:08:36,583 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:08:36,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:08:36,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:08:36,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:08:36,597 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:08:36,599 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:08:36,601 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:08:36,602 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:08:36,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:08:36,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:08:36,605 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:08:36,607 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:08:36,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:08:36,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:08:36,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:08:36,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:08:36,616 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:08:36,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:08:36,618 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:08:36,619 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:08:36,625 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:08:36,626 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:08:36,626 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:08:36,627 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:08:36,628 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:08:36,628 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:08:36,629 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:08:36,630 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:08:36,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:08:36,630 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:08:36,630 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:08:36,630 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:08:36,633 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:08:36,634 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:08:36,634 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:08:36,649 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:08:36,650 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:08:36,651 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:08:36,652 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:08:36,652 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:08:36,652 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:08:36,653 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:08:36,653 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:08:36,654 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:08:36,654 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:08:36,654 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:08:36,654 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:08:36,654 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:08:36,655 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:08:36,656 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:08:36,656 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:08:36,656 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:08:36,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:08:36,656 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:08:36,656 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:08:36,657 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:08:36,657 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_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/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 -> aae625cda61f26fa063b78c3d3a58aff5ded8a89 [2018-10-27 06:08:36,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:08:36,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:08:36,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:08:36,719 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:08:36,719 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:08:36,720 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c [2018-10-27 06:08:36,761 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/data/2b4adc020/bb81ab6d1e0440f4bd673701fea88361/FLAG613f5db93 [2018-10-27 06:08:37,107 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:08:37,108 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/sv-benchmarks/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c [2018-10-27 06:08:37,112 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/data/2b4adc020/bb81ab6d1e0440f4bd673701fea88361/FLAG613f5db93 [2018-10-27 06:08:37,122 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/data/2b4adc020/bb81ab6d1e0440f4bd673701fea88361 [2018-10-27 06:08:37,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:08:37,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:08:37,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:37,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:08:37,128 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:08:37,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1511b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37, skipping insertion in model container [2018-10-27 06:08:37,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:08:37,163 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:08:37,281 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:37,283 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:08:37,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:37,305 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:08:37,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37 WrapperNode [2018-10-27 06:08:37,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:37,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:37,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:08:37,306 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:08:37,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:37,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:08:37,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:08:37,334 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:08:37,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... [2018-10-27 06:08:37,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:08:37,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:08:37,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:08:37,351 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:08:37,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:08:37,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:08:37,804 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:08:37,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:37 BoogieIcfgContainer [2018-10-27 06:08:37,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:08:37,805 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:08:37,805 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:08:37,809 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:08:37,809 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:37,809 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:08:37" (1/3) ... [2018-10-27 06:08:37,810 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@299df034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:37, skipping insertion in model container [2018-10-27 06:08:37,811 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:37,811 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:37" (2/3) ... [2018-10-27 06:08:37,811 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@299df034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:37, skipping insertion in model container [2018-10-27 06:08:37,811 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:37,811 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:37" (3/3) ... [2018-10-27 06:08:37,813 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD3_true-termination_true-no-overflow.c [2018-10-27 06:08:37,862 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:08:37,862 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:08:37,862 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:08:37,862 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:08:37,862 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:08:37,863 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:08:37,863 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:08:37,863 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:08:37,863 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:08:37,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-10-27 06:08:37,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-10-27 06:08:37,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:37,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:37,900 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:37,900 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:37,900 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:08:37,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-10-27 06:08:37,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-10-27 06:08:37,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:37,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:37,902 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:37,903 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:37,910 INFO L793 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L13-3true [2018-10-27 06:08:37,910 INFO L795 eck$LassoCheckResult]: Loop: 11#L13-3true assume true; 15#L13-1true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 4#L17true assume main_~y~0 == 0;main_~y~0 := main_~y~0; 7#L21-2true assume main_~xtmp~0 > 0; 16#L26-3true assume !true; 14#L26-4true main_~y~0 := main_~xtmp~0; 18#L25-1true main_~x~0 := main_~tmp~0; 11#L13-3true [2018-10-27 06:08:37,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:37,916 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:08:37,917 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:37,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:37,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:37,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1163887162, now seen corresponding path program 1 times [2018-10-27 06:08:38,006 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:38,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:38,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:08:38,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:08:38,056 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:08:38,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 06:08:38,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 06:08:38,074 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-27 06:08:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:08:38,082 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2018-10-27 06:08:38,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:08:38,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2018-10-27 06:08:38,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-10-27 06:08:38,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 19 transitions. [2018-10-27 06:08:38,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-10-27 06:08:38,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-10-27 06:08:38,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2018-10-27 06:08:38,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:08:38,092 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-27 06:08:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2018-10-27 06:08:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-27 06:08:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-27 06:08:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-10-27 06:08:38,125 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-27 06:08:38,125 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-10-27 06:08:38,125 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:08:38,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2018-10-27 06:08:38,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-10-27 06:08:38,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:38,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:38,126 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:38,127 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:38,129 INFO L793 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 52#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; 53#L13-3 [2018-10-27 06:08:38,129 INFO L795 eck$LassoCheckResult]: Loop: 53#L13-3 assume true; 54#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 46#L17 assume main_~y~0 == 0;main_~y~0 := main_~y~0; 48#L21-2 assume !(main_~xtmp~0 > 0); 49#L31-3 assume true; 50#L31-1 assume !(main_~xtmp~0 < 0); 44#L31-4 main_~y~0 := main_~xtmp~0; 45#L25-1 main_~x~0 := main_~tmp~0; 53#L13-3 [2018-10-27 06:08:38,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,129 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-10-27 06:08:38,129 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:38,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1705739384, now seen corresponding path program 1 times [2018-10-27 06:08:38,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:38,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:38,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:08:38,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:08:38,189 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:08:38,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:08:38,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:08:38,189 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-10-27 06:08:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:08:38,229 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-10-27 06:08:38,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:08:38,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2018-10-27 06:08:38,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-10-27 06:08:38,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 17 transitions. [2018-10-27 06:08:38,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-10-27 06:08:38,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-10-27 06:08:38,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2018-10-27 06:08:38,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:08:38,232 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-10-27 06:08:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2018-10-27 06:08:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-27 06:08:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-27 06:08:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-10-27 06:08:38,233 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-10-27 06:08:38,233 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-10-27 06:08:38,233 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:08:38,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2018-10-27 06:08:38,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-10-27 06:08:38,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:38,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:38,234 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:38,234 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:38,234 INFO L793 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 86#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L13-3 [2018-10-27 06:08:38,234 INFO L795 eck$LassoCheckResult]: Loop: 87#L13-3 assume true; 88#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 80#L17 assume !(main_~y~0 == 0); 81#L21 assume !(main_~y~0 < 0); 84#L21-2 assume !(main_~xtmp~0 > 0); 82#L31-3 assume true; 83#L31-1 assume !(main_~xtmp~0 < 0); 78#L31-4 main_~y~0 := main_~xtmp~0; 79#L25-1 main_~x~0 := main_~tmp~0; 87#L13-3 [2018-10-27 06:08:38,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,235 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-10-27 06:08:38,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:38,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,241 INFO L82 PathProgramCache]: Analyzing trace with hash -139708028, now seen corresponding path program 1 times [2018-10-27 06:08:38,242 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:38,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:38,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:08:38,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:08:38,277 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:08:38,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:08:38,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:08:38,277 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-10-27 06:08:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:08:38,326 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-10-27 06:08:38,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:08:38,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2018-10-27 06:08:38,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2018-10-27 06:08:38,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2018-10-27 06:08:38,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-10-27 06:08:38,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-10-27 06:08:38,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2018-10-27 06:08:38,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:08:38,330 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-10-27 06:08:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2018-10-27 06:08:38,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2018-10-27 06:08:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-27 06:08:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-27 06:08:38,332 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-27 06:08:38,332 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-27 06:08:38,332 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:08:38,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2018-10-27 06:08:38,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-10-27 06:08:38,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:38,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:38,333 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:38,333 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:38,334 INFO L793 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 115#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; 116#L13-3 [2018-10-27 06:08:38,334 INFO L795 eck$LassoCheckResult]: Loop: 116#L13-3 assume true; 117#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 123#L17 assume !(main_~y~0 == 0); 118#L21 assume !(main_~y~0 < 0); 119#L21-2 assume main_~xtmp~0 > 0; 124#L26-3 assume true; 125#L26-1 assume !(main_~xtmp~0 >= main_~y~0); 121#L26-4 main_~y~0 := main_~xtmp~0; 122#L25-1 main_~x~0 := main_~tmp~0; 116#L13-3 [2018-10-27 06:08:38,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,334 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2018-10-27 06:08:38,334 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:38,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash -154976892, now seen corresponding path program 1 times [2018-10-27 06:08:38,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:38,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash -222407678, now seen corresponding path program 1 times [2018-10-27 06:08:38,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:38,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:38,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:38,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:38,511 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:38,512 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:38,512 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:38,512 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:38,513 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:38,513 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:38,513 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:38,513 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:38,513 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:08:38,513 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:38,514 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:38,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:38,855 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:38,856 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:38,860 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:38,861 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:38,890 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:38,890 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:41,929 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:41,930 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:41,930 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:41,930 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:41,931 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:41,931 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:41,931 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:41,931 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:41,931 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:41,931 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:08:41,931 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:41,931 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:41,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:41,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:41,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:42,094 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:42,099 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:42,100 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:42,102 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:42,102 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:42,102 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:42,103 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:42,104 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:42,107 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:42,107 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:42,126 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:42,142 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:42,146 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:42,147 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:42,148 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:42,148 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:42,149 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:08:42,152 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:42,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:42,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:42,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:42,551 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-10-27 06:08:42,551 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 6 states. [2018-10-27 06:08:42,678 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 12 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 36 states and 41 transitions. Complement of second has 9 states. [2018-10-27 06:08:42,679 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 [2018-10-27 06:08:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-27 06:08:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2018-10-27 06:08:42,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 9 letters. [2018-10-27 06:08:42,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:42,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 11 letters. Loop has 9 letters. [2018-10-27 06:08:42,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:42,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 18 letters. [2018-10-27 06:08:42,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:42,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2018-10-27 06:08:42,684 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-10-27 06:08:42,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 32 states and 36 transitions. [2018-10-27 06:08:42,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2018-10-27 06:08:42,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-10-27 06:08:42,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 36 transitions. [2018-10-27 06:08:42,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:42,685 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-10-27 06:08:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 36 transitions. [2018-10-27 06:08:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-10-27 06:08:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-27 06:08:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-10-27 06:08:42,687 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-10-27 06:08:42,687 INFO L608 BuchiCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-10-27 06:08:42,687 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:08:42,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 31 transitions. [2018-10-27 06:08:42,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-10-27 06:08:42,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:42,688 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:42,688 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:42,688 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:08:42,688 INFO L793 eck$LassoCheckResult]: Stem: 235#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 225#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; 226#L13-3 assume true; 228#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 240#L17 assume !(main_~y~0 == 0); 231#L21 assume !(main_~y~0 < 0); 232#L21-2 assume main_~xtmp~0 > 0; 242#L26-3 assume true; 243#L26-1 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 248#L26-3 [2018-10-27 06:08:42,688 INFO L795 eck$LassoCheckResult]: Loop: 248#L26-3 assume true; 249#L26-1 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 248#L26-3 [2018-10-27 06:08:42,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash 384125682, now seen corresponding path program 1 times [2018-10-27 06:08:42,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:42,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:42,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:42,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:42,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:42,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:42,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1927, now seen corresponding path program 1 times [2018-10-27 06:08:42,699 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:42,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:42,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:42,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:42,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:42,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:42,703 INFO L82 PathProgramCache]: Analyzing trace with hash -222406088, now seen corresponding path program 2 times [2018-10-27 06:08:42,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:42,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:42,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:42,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:42,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:42,860 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-10-27 06:08:42,878 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:42,878 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:42,878 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:42,878 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:42,878 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:42,878 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:42,878 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:42,878 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:42,879 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-10-27 06:08:42,879 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:42,879 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:42,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:42,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:42,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:42,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:42,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:42,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:43,003 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:43,003 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:43,011 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:43,011 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:43,028 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:43,028 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_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:43,039 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:43,039 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:43,063 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:43,064 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/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) [2018-10-27 06:08:43,094 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:43,094 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:43,098 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:43,098 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:43,124 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:43,124 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:43,137 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:43,138 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/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) [2018-10-27 06:08:43,172 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:43,172 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 06:08:43,211 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:43,211 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:43,344 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:43,345 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:43,345 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:43,345 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:43,345 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:43,345 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:43,346 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:43,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:43,346 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:43,346 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-10-27 06:08:43,346 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:43,346 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:43,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:43,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:43,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:43,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:43,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:43,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:43,462 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:43,462 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:43,462 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:43,463 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:43,463 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:43,464 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:43,464 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:43,464 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:43,464 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:43,464 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:43,465 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:43,466 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:43,466 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:43,467 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:43,470 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:43,470 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:43,471 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:43,472 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:43,476 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:43,476 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:43,477 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:43,477 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:43,477 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:43,477 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:43,477 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:43,478 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:43,478 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:43,478 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:43,479 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:43,479 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:43,479 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:43,479 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:43,480 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:43,480 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:43,480 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:43,480 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:43,481 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:43,481 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:43,481 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:43,482 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:43,482 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:43,482 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:43,486 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:43,486 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:43,510 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:43,524 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:08:43,524 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:08:43,525 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:43,526 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-10-27 06:08:43,527 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:43,528 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-10-27 06:08:43,551 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-10-27 06:08:43,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:43,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:43,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:43,727 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-10-27 06:08:43,727 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 31 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-10-27 06:08:43,807 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 31 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 34 states and 39 transitions. Complement of second has 6 states. [2018-10-27 06:08:43,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:08:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-10-27 06:08:43,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 2 letters. [2018-10-27 06:08:43,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:43,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 2 letters. [2018-10-27 06:08:43,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:43,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 4 letters. [2018-10-27 06:08:43,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:43,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 39 transitions. [2018-10-27 06:08:43,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-10-27 06:08:43,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 33 states and 38 transitions. [2018-10-27 06:08:43,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2018-10-27 06:08:43,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-10-27 06:08:43,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 38 transitions. [2018-10-27 06:08:43,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:43,812 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 38 transitions. [2018-10-27 06:08:43,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 38 transitions. [2018-10-27 06:08:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2018-10-27 06:08:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-27 06:08:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-10-27 06:08:43,816 INFO L728 BuchiCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-10-27 06:08:43,816 INFO L608 BuchiCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-10-27 06:08:43,816 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:08:43,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 37 transitions. [2018-10-27 06:08:43,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-10-27 06:08:43,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:43,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:43,817 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:43,817 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:43,818 INFO L793 eck$LassoCheckResult]: Stem: 361#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 351#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; 352#L13-3 assume true; 382#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 381#L17 assume !(main_~y~0 == 0); 380#L21 assume !(main_~y~0 < 0); 379#L21-2 assume main_~xtmp~0 > 0; 378#L26-3 assume true; 377#L26-1 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 376#L26-3 assume true; 373#L26-1 assume !(main_~xtmp~0 >= main_~y~0); 362#L26-4 [2018-10-27 06:08:43,818 INFO L795 eck$LassoCheckResult]: Loop: 362#L26-4 main_~y~0 := main_~xtmp~0; 363#L25-1 main_~x~0 := main_~tmp~0; 353#L13-3 assume true; 354#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 366#L17 assume !(main_~y~0 == 0); 357#L21 assume !(main_~y~0 < 0); 358#L21-2 assume main_~xtmp~0 > 0; 368#L26-3 assume true; 369#L26-1 assume !(main_~xtmp~0 >= main_~y~0); 362#L26-4 [2018-10-27 06:08:43,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:43,818 INFO L82 PathProgramCache]: Analyzing trace with hash -222406090, now seen corresponding path program 1 times [2018-10-27 06:08:43,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:43,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:43,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:43,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:43,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:43,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:43,827 INFO L82 PathProgramCache]: Analyzing trace with hash -86477856, now seen corresponding path program 2 times [2018-10-27 06:08:43,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:43,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:43,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:43,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:43,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:43,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1563179701, now seen corresponding path program 1 times [2018-10-27 06:08:43,835 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:43,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:43,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:43,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:43,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 06:08:43,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:08:43,896 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:08:43,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:43,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 06:08:44,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:08:44,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-10-27 06:08:44,366 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-10-27 06:08:44,376 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:44,376 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:44,376 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:44,376 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:44,376 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:44,376 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:44,377 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:44,377 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:44,377 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-10-27 06:08:44,377 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:44,377 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:44,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:44,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:44,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:44,469 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:44,469 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:44,472 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:44,472 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:44,489 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:44,489 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_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:44,493 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:44,493 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/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 [2018-10-27 06:08:44,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:44,524 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:46,420 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:46,422 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:46,422 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:46,422 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:46,422 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:46,422 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:46,422 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:46,422 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:46,422 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:46,423 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-10-27 06:08:46,423 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:46,423 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:46,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:46,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:46,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:46,471 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:46,471 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:46,471 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:46,472 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:46,472 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:46,472 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:46,472 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:46,473 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:46,473 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:46,478 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:46,479 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:46,479 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:46,479 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:46,479 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:46,479 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:46,480 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:46,480 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:46,482 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:46,483 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:46,487 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:46,487 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:46,487 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:46,487 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:46,487 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:46,488 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:46,488 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:46,494 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:46,497 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:46,498 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:46,498 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:46,498 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:46,498 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:46,498 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-10-27 06:08:46,501 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:46,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:46,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:46,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:46,547 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:08:46,547 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 37 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-10-27 06:08:46,612 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 37 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 83 states and 97 transitions. Complement of second has 8 states. [2018-10-27 06:08:46,612 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 [2018-10-27 06:08:46,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:46,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2018-10-27 06:08:46,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 11 letters. Loop has 9 letters. [2018-10-27 06:08:46,613 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:46,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 20 letters. Loop has 9 letters. [2018-10-27 06:08:46,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:46,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 11 letters. Loop has 18 letters. [2018-10-27 06:08:46,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:46,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 97 transitions. [2018-10-27 06:08:46,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-10-27 06:08:46,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 76 states and 90 transitions. [2018-10-27 06:08:46,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-10-27 06:08:46,619 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-10-27 06:08:46,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 90 transitions. [2018-10-27 06:08:46,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:46,620 INFO L705 BuchiCegarLoop]: Abstraction has 76 states and 90 transitions. [2018-10-27 06:08:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 90 transitions. [2018-10-27 06:08:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2018-10-27 06:08:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-27 06:08:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2018-10-27 06:08:46,625 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 80 transitions. [2018-10-27 06:08:46,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 06:08:46,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-27 06:08:46,626 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 8 states. [2018-10-27 06:08:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:08:46,745 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2018-10-27 06:08:46,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 06:08:46,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 85 transitions. [2018-10-27 06:08:46,748 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-10-27 06:08:46,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 45 states and 51 transitions. [2018-10-27 06:08:46,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-10-27 06:08:46,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-10-27 06:08:46,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 51 transitions. [2018-10-27 06:08:46,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:46,749 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-10-27 06:08:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 51 transitions. [2018-10-27 06:08:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2018-10-27 06:08:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-27 06:08:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-10-27 06:08:46,751 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-10-27 06:08:46,751 INFO L608 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-10-27 06:08:46,751 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-10-27 06:08:46,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 37 transitions. [2018-10-27 06:08:46,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-10-27 06:08:46,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:46,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:46,753 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:46,753 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:46,753 INFO L793 eck$LassoCheckResult]: Stem: 778#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 772#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; 773#L13-3 assume true; 798#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 797#L17 assume !(main_~y~0 == 0); 796#L21 assume !(main_~y~0 < 0); 795#L21-2 assume main_~xtmp~0 > 0; 794#L26-3 assume true; 793#L26-1 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 792#L26-3 assume true; 786#L26-1 assume !(main_~xtmp~0 >= main_~y~0); 779#L26-4 [2018-10-27 06:08:46,753 INFO L795 eck$LassoCheckResult]: Loop: 779#L26-4 main_~y~0 := main_~xtmp~0; 780#L25-1 main_~x~0 := main_~tmp~0; 774#L13-3 assume true; 775#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 804#L17 assume !(main_~y~0 == 0); 802#L21 assume !(main_~y~0 < 0); 790#L21-2 assume main_~xtmp~0 > 0; 791#L26-3 assume true; 799#L26-1 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 800#L26-3 assume true; 801#L26-1 assume !(main_~xtmp~0 >= main_~y~0); 779#L26-4 [2018-10-27 06:08:46,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:46,753 INFO L82 PathProgramCache]: Analyzing trace with hash -222406090, now seen corresponding path program 2 times [2018-10-27 06:08:46,753 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:46,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:46,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:46,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:46,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:46,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:46,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1500838106, now seen corresponding path program 1 times [2018-10-27 06:08:46,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:46,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:46,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:46,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:46,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:46,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1022863825, now seen corresponding path program 2 times [2018-10-27 06:08:46,768 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:46,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:46,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:46,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:46,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:46,832 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:46,832 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:46,832 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:46,832 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:46,832 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:46,832 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:46,832 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:46,832 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:46,833 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration7_Loop [2018-10-27 06:08:46,833 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:46,833 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:46,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:46,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:46,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:46,931 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:46,932 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:46,935 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:46,936 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:46,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:46,959 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:51,885 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:51,887 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:51,887 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:51,887 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:51,887 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:51,887 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:51,888 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:51,888 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:51,888 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:51,888 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration7_Loop [2018-10-27 06:08:51,888 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:51,888 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:51,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:51,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:51,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:51,934 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:51,935 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:51,935 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:51,935 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:51,936 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:51,936 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:51,936 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:51,936 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:51,936 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:51,937 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:51,944 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:51,948 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:51,948 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:51,948 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:51,948 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:51,949 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:51,949 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-10-27 06:08:51,949 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:52,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:52,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:52,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 06:08:52,029 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:08:52,029 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 37 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-10-27 06:08:52,060 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 37 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 66 states and 76 transitions. Complement of second has 6 states. [2018-10-27 06:08:52,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:08:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-10-27 06:08:52,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 11 letters. [2018-10-27 06:08:52,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:52,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 11 letters. [2018-10-27 06:08:52,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:52,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 22 letters. [2018-10-27 06:08:52,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:52,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 76 transitions. [2018-10-27 06:08:52,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:08:52,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 54 states and 62 transitions. [2018-10-27 06:08:52,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-10-27 06:08:52,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2018-10-27 06:08:52,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 62 transitions. [2018-10-27 06:08:52,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:52,064 INFO L705 BuchiCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-10-27 06:08:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 62 transitions. [2018-10-27 06:08:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-10-27 06:08:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-27 06:08:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2018-10-27 06:08:52,070 INFO L728 BuchiCegarLoop]: Abstraction has 50 states and 57 transitions. [2018-10-27 06:08:52,070 INFO L608 BuchiCegarLoop]: Abstraction has 50 states and 57 transitions. [2018-10-27 06:08:52,070 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-10-27 06:08:52,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 57 transitions. [2018-10-27 06:08:52,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:08:52,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:52,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:52,071 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:08:52,072 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:08:52,072 INFO L793 eck$LassoCheckResult]: Stem: 972#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 962#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; 963#L13-3 assume true; 1000#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 999#L17 assume !(main_~y~0 == 0); 998#L21 assume !(main_~y~0 < 0); 997#L21-2 assume main_~xtmp~0 > 0; 996#L26-3 assume true; 995#L26-1 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 994#L26-3 assume true; 991#L26-1 assume !(main_~xtmp~0 >= main_~y~0); 990#L26-4 main_~y~0 := main_~xtmp~0; 977#L25-1 main_~x~0 := main_~tmp~0; 964#L13-3 assume true; 965#L13-1 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 978#L17 assume !(main_~y~0 == 0); 979#L21 assume !(main_~y~0 < 0); 987#L21-2 assume main_~xtmp~0 > 0; 983#L26-3 [2018-10-27 06:08:52,072 INFO L795 eck$LassoCheckResult]: Loop: 983#L26-3 assume true; 984#L26-1 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 983#L26-3 [2018-10-27 06:08:52,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:52,072 INFO L82 PathProgramCache]: Analyzing trace with hash -703301817, now seen corresponding path program 3 times [2018-10-27 06:08:52,072 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:52,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:52,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:52,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:52,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:52,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1927, now seen corresponding path program 2 times [2018-10-27 06:08:52,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:52,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:52,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:52,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:52,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:52,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:52,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1563179699, now seen corresponding path program 4 times [2018-10-27 06:08:52,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:52,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:52,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:52,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:08:52,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:52,339 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-10-27 06:08:52,345 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:52,345 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:52,345 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:52,345 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:52,345 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:52,345 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:52,345 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:52,345 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:52,345 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration8_Lasso [2018-10-27 06:08:52,345 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:52,345 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:52,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,413 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:52,413 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:52,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:52,417 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:52,419 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:52,419 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:52,436 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:52,436 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:52,438 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:52,438 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:52,455 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:52,455 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03d1c0ab-56a9-4c39-85a7-f9edcef2bd51/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:52,476 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:52,476 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:52,615 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:52,616 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:52,616 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:52,617 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:52,617 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:52,617 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:52,617 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:52,617 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:52,617 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:52,617 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration8_Lasso [2018-10-27 06:08:52,617 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:52,617 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:52,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:52,712 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:52,712 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:52,713 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:52,713 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:52,713 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:52,713 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:52,713 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:52,713 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:52,714 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:52,714 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:52,714 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:52,715 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:52,715 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:52,715 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:52,715 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:52,715 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:52,715 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:52,715 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:52,716 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:52,716 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:52,716 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:52,716 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:52,717 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:52,717 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:52,717 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:52,717 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:52,718 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:52,721 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:52,722 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:52,722 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:52,722 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:52,722 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:52,722 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:52,722 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:52,722 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:52,723 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:52,723 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:52,723 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:52,723 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:52,724 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:52,724 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:52,724 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:52,725 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:52,725 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:52,727 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:52,727 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:52,727 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:52,727 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:52,727 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:52,728 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:52,729 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:52,729 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:52,736 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:52,741 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:08:52,741 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:08:52,741 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:52,742 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-10-27 06:08:52,743 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:52,743 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-10-27 06:08:52,765 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-10-27 06:08:52,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:52,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:52,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:52,804 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-10-27 06:08:52,804 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 57 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-10-27 06:08:52,826 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 57 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 56 states and 65 transitions. Complement of second has 6 states. [2018-10-27 06:08:52,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:08:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-10-27 06:08:52,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 18 letters. Loop has 2 letters. [2018-10-27 06:08:52,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:52,829 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:08:52,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:52,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:52,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:52,988 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-10-27 06:08:52,988 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 57 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-10-27 06:08:53,033 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 57 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 56 states and 65 transitions. Complement of second has 6 states. [2018-10-27 06:08:53,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:08:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-10-27 06:08:53,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 18 letters. Loop has 2 letters. [2018-10-27 06:08:53,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:53,035 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:08:53,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:53,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:53,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:53,073 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-10-27 06:08:53,074 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 57 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-10-27 06:08:53,103 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 57 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 75 transitions. Complement of second has 5 states. [2018-10-27 06:08:53,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:08:53,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:08:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-10-27 06:08:53,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 2 letters. [2018-10-27 06:08:53,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:53,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2018-10-27 06:08:53,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:53,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 4 letters. [2018-10-27 06:08:53,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:53,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 75 transitions. [2018-10-27 06:08:53,109 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:08:53,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 0 states and 0 transitions. [2018-10-27 06:08:53,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:08:53,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:08:53,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:08:53,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:08:53,109 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:08:53,109 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:08:53,110 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:08:53,110 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-10-27 06:08:53,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:08:53,110 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:08:53,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:08:53,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:08:53 BoogieIcfgContainer [2018-10-27 06:08:53,115 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:08:53,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:08:53,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:08:53,116 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:08:53,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:37" (3/4) ... [2018-10-27 06:08:53,119 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:08:53,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:08:53,120 INFO L168 Benchmark]: Toolchain (without parser) took 15995.41 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.2 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -94.0 MB). Peak memory consumption was 127.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:53,121 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:53,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.32 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:53,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.58 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:53,122 INFO L168 Benchmark]: Boogie Preprocessor took 16.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:53,122 INFO L168 Benchmark]: RCFGBuilder took 454.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -208.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:53,122 INFO L168 Benchmark]: BuchiAutomizer took 15310.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 50.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.1 MB). Peak memory consumption was 151.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:08:53,123 INFO L168 Benchmark]: Witness Printer took 3.57 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:08:53,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.32 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.58 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 454.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -208.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 15310.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 50.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.1 MB). Peak memory consumption was 151.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.57 ms. Allocated memory is still 1.3 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 9 terminating modules (4 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 -2 * y + 2 * xtmp + 1 and consists of 4 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 -2 * y + 2 * xtmp + 1 and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.2s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 13.5s. Construction of modules took 0.3s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 36 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 50 states and ocurred in iteration 7. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 115 SDtfs, 135 SDslu, 63 SDs, 0 SdLazy, 186 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf96 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf90 smp100 dnf100 smp100 tf103 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 10.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...