./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0497b69437c9ebb889888bdb31aaefcc8eaad029 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:41:20,323 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:41:20,327 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:41:20,337 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:41:20,337 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:41:20,338 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:41:20,339 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:41:20,341 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:41:20,342 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:41:20,343 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:41:20,344 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:41:20,344 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:41:20,345 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:41:20,346 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:41:20,347 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:41:20,348 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:41:20,349 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:41:20,350 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:41:20,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:41:20,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:41:20,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:41:20,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:41:20,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:41:20,358 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:41:20,358 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:41:20,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:41:20,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:41:20,361 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:41:20,372 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:41:20,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:41:20,373 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:41:20,373 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:41:20,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:41:20,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:41:20,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:41:20,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:41:20,376 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 16:41:20,395 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:41:20,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:41:20,396 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:41:20,397 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:41:20,397 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:41:20,397 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 16:41:20,397 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 16:41:20,397 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 16:41:20,397 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 16:41:20,397 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 16:41:20,397 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 16:41:20,399 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:41:20,399 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:41:20,399 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 16:41:20,399 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:41:20,399 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:41:20,399 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:41:20,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 16:41:20,400 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 16:41:20,400 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 16:41:20,400 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:41:20,400 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:41:20,401 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 16:41:20,401 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:41:20,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 16:41:20,402 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:41:20,402 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:41:20,402 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 16:41:20,402 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:41:20,403 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:41:20,403 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 16:41:20,404 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 16:41:20,404 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_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2018-11-18 16:41:20,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:41:20,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:41:20,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:41:20,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:41:20,447 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:41:20,448 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 16:41:20,493 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/data/e16842777/3999f4daf499407f8aedc0e6c1f826b3/FLAGa91e65764 [2018-11-18 16:41:20,909 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:41:20,910 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 16:41:20,916 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/data/e16842777/3999f4daf499407f8aedc0e6c1f826b3/FLAGa91e65764 [2018-11-18 16:41:21,280 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/data/e16842777/3999f4daf499407f8aedc0e6c1f826b3 [2018-11-18 16:41:21,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:41:21,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:41:21,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:41:21,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:41:21,287 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:41:21,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ae4871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21, skipping insertion in model container [2018-11-18 16:41:21,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:41:21,308 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:41:21,431 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:41:21,435 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:41:21,449 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:41:21,461 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:41:21,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21 WrapperNode [2018-11-18 16:41:21,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:41:21,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:41:21,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:41:21,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:41:21,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:41:21,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:41:21,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:41:21,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:41:21,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... [2018-11-18 16:41:21,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:41:21,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:41:21,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:41:21,515 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:41:21,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-18 16:41:21,666 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-18 16:41:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:41:21,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:41:21,953 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:41:21,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:41:21 BoogieIcfgContainer [2018-11-18 16:41:21,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:41:21,954 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 16:41:21,954 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 16:41:21,957 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 16:41:21,959 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:41:21,959 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 04:41:21" (1/3) ... [2018-11-18 16:41:21,960 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@286da7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 04:41:21, skipping insertion in model container [2018-11-18 16:41:21,960 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:41:21,961 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:41:21" (2/3) ... [2018-11-18 16:41:21,961 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@286da7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 04:41:21, skipping insertion in model container [2018-11-18 16:41:21,962 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:41:21,962 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:41:21" (3/3) ... [2018-11-18 16:41:21,963 INFO L375 chiAutomizerObserver]: Analyzing ICFG gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 16:41:22,017 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:41:22,017 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 16:41:22,017 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 16:41:22,018 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 16:41:22,018 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:41:22,018 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:41:22,018 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 16:41:22,018 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:41:22,019 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 16:41:22,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-18 16:41:22,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 16:41:22,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:41:22,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:41:22,059 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 16:41:22,059 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 16:41:22,059 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 16:41:22,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-18 16:41:22,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 16:41:22,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:41:22,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:41:22,062 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 16:41:22,063 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 16:41:22,070 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 19#L34true assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2018-11-18 16:41:22,071 INFO L796 eck$LassoCheckResult]: Loop: 5#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 22#L16true assume !(~y1 <= 0 || ~y2 <= 0); 16#L19true assume !(~y1 == ~y2); 12#L22true assume ~y1 > ~y2; 3#L23true call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 5#gcdENTRYtrue [2018-11-18 16:41:22,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:22,076 INFO L82 PathProgramCache]: Analyzing trace with hash 45873351, now seen corresponding path program 1 times [2018-11-18 16:41:22,077 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:22,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:22,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:22,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:41:22,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:22,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:22,162 INFO L82 PathProgramCache]: Analyzing trace with hash 28756387, now seen corresponding path program 1 times [2018-11-18 16:41:22,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:22,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:22,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:22,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:41:22,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:22,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:22,177 INFO L82 PathProgramCache]: Analyzing trace with hash -6988643, now seen corresponding path program 1 times [2018-11-18 16:41:22,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:22,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:22,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:22,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:41:22,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:22,359 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:41:22,360 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:41:22,360 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:41:22,361 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:41:22,361 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:41:22,361 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:22,361 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:41:22,361 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:41:22,361 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-18 16:41:22,361 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:41:22,362 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:41:22,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,578 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:41:22,579 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:22,583 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:41:22,584 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:41:22,593 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:41:22,594 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:22,618 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:41:22,618 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:22,639 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:41:22,639 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:41:22,670 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:41:22,672 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:41:22,672 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:41:22,672 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:41:22,672 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:41:22,673 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:41:22,673 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:22,673 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:41:22,673 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:41:22,673 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-18 16:41:22,673 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:41:22,673 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:41:22,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:22,890 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:41:22,894 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:41:22,896 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:41:22,898 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:41:22,898 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:41:22,899 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:41:22,899 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:41:22,899 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:41:22,901 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:41:22,901 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:41:22,905 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:41:22,905 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:41:22,906 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:41:22,907 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:41:22,907 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:41:22,907 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:41:22,907 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:41:22,908 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:41:22,908 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:41:22,909 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:41:22,909 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:41:22,911 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:41:22,911 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:41:22,911 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:41:22,911 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:41:22,911 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:41:22,912 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:41:22,912 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:41:22,923 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:41:22,931 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:41:22,931 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 16:41:22,933 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:41:22,933 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:41:22,933 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:41:22,933 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2018-11-18 16:41:22,935 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:41:23,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:23,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:23,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:41:23,422 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 [2018-11-18 16:41:23,423 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 5 states. [2018-11-18 16:41:24,139 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states.. Second operand 5 states. Result 94 states and 130 transitions. Complement of second has 30 states. [2018-11-18 16:41:24,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-18 16:41:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 16:41:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2018-11-18 16:41:24,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2018-11-18 16:41:24,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:24,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-18 16:41:24,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:24,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-18 16:41:24,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:24,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 130 transitions. [2018-11-18 16:41:24,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:41:24,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 36 states and 41 transitions. [2018-11-18 16:41:24,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-18 16:41:24,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-18 16:41:24,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2018-11-18 16:41:24,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 16:41:24,160 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-11-18 16:41:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2018-11-18 16:41:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2018-11-18 16:41:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 16:41:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-11-18 16:41:24,182 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-18 16:41:24,182 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-18 16:41:24,182 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 16:41:24,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2018-11-18 16:41:24,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:41:24,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:41:24,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:41:24,183 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-18 16:41:24,183 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 16:41:24,184 INFO L794 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 203#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 204#L30 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 220#L34 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 207#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 209#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 212#L16 [2018-11-18 16:41:24,184 INFO L796 eck$LassoCheckResult]: Loop: 212#L16 assume !(~y1 <= 0 || ~y2 <= 0); 216#L19 assume !(~y1 == ~y2); 217#L22 assume !(~y1 > ~y2); 211#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 210#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 212#L16 [2018-11-18 16:41:24,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:24,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1422073881, now seen corresponding path program 1 times [2018-11-18 16:41:24,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:24,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:24,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:24,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:41:24,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:24,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:24,193 INFO L82 PathProgramCache]: Analyzing trace with hash 32576412, now seen corresponding path program 1 times [2018-11-18 16:41:24,193 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:24,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:24,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:24,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:41:24,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:24,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:24,204 INFO L82 PathProgramCache]: Analyzing trace with hash -216644988, now seen corresponding path program 1 times [2018-11-18 16:41:24,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:24,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:24,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:24,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:41:24,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:24,448 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:41:24,448 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:41:24,448 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:41:24,448 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:41:24,448 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:41:24,448 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:24,448 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:41:24,448 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:41:24,448 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-18 16:41:24,448 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:41:24,448 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:41:24,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:24,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:24,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:24,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:24,677 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-18 16:41:24,739 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:41:24,739 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:24,747 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:41:24,747 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:24,785 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:41:24,785 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:41:29,405 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:41:29,407 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:41:29,407 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:41:29,407 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:41:29,408 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:41:29,408 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:41:29,408 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:29,408 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:41:29,408 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:41:29,408 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-18 16:41:29,408 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:41:29,408 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:41:29,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,559 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:41:29,559 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:41:29,559 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:41:29,560 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:41:29,560 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:41:29,560 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:41:29,560 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:41:29,561 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:41:29,561 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:41:29,562 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:41:29,569 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:41:29,574 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:41:29,574 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 16:41:29,574 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:41:29,574 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:41:29,575 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:41:29,575 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-18 16:41:29,575 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:41:29,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:29,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:29,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:41:29,660 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 16:41:29,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-18 16:41:29,692 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 54 states and 61 transitions. Complement of second has 11 states. [2018-11-18 16:41:29,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:41:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:41:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 16:41:29,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2018-11-18 16:41:29,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:29,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-18 16:41:29,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:29,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2018-11-18 16:41:29,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:29,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2018-11-18 16:41:29,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:41:29,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2018-11-18 16:41:29,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 16:41:29,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 16:41:29,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2018-11-18 16:41:29,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 16:41:29,699 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 16:41:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2018-11-18 16:41:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-11-18 16:41:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 16:41:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-18 16:41:29,701 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-18 16:41:29,701 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-18 16:41:29,701 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 16:41:29,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2018-11-18 16:41:29,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 16:41:29,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:41:29,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:41:29,702 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:41:29,702 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 16:41:29,703 INFO L794 eck$LassoCheckResult]: Stem: 347#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 337#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 338#L30 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 355#L34 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 340#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 344#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 assume !(~y1 <= 0 || ~y2 <= 0); 360#L19 assume !(~y1 == ~y2); 359#L22 assume ~y1 > ~y2; 339#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 341#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 356#L16 [2018-11-18 16:41:29,703 INFO L796 eck$LassoCheckResult]: Loop: 356#L16 assume !(~y1 <= 0 || ~y2 <= 0); 348#L19 assume !(~y1 == ~y2); 350#L22 assume !(~y1 > ~y2); 349#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 353#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 356#L16 [2018-11-18 16:41:29,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:29,703 INFO L82 PathProgramCache]: Analyzing trace with hash -216647933, now seen corresponding path program 2 times [2018-11-18 16:41:29,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:29,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:29,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:29,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:41:29,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:29,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:29,715 INFO L82 PathProgramCache]: Analyzing trace with hash 32576412, now seen corresponding path program 2 times [2018-11-18 16:41:29,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:29,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:29,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:29,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:41:29,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:29,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:29,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1787751898, now seen corresponding path program 1 times [2018-11-18 16:41:29,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:41:29,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:41:29,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:29,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:41:29,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:41:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:41:29,831 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:41:29,831 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:41:29,831 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:41:29,831 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:41:29,831 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:41:29,831 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:29,831 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:41:29,831 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:41:29,831 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-18 16:41:29,831 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:41:29,831 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:41:29,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:29,908 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:41:29,908 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:29,912 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:41:29,912 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:41:29,919 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:41:29,919 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret0=0} Honda state: {gcd_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:29,941 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:41:29,941 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22d3d64d-1de5-42f5-ac00-84b3dcd4e585/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:29,968 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:41:29,968 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:41:30,652 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:41:30,655 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:41:30,655 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:41:30,655 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:41:30,655 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:41:30,655 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:41:30,655 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:41:30,655 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:41:30,655 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:41:30,655 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-18 16:41:30,656 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:41:30,656 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:41:30,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:30,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:30,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:30,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:41:30,736 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:41:30,736 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:41:30,737 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:41:30,737 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:41:30,737 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:41:30,738 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:41:30,738 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:41:30,738 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:41:30,738 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:41:30,738 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:41:30,739 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:41:30,740 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:41:30,740 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:41:30,740 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:41:30,740 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:41:30,741 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:41:30,741 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:41:30,742 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:41:30,742 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:41:30,747 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:41:30,750 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:41:30,750 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 16:41:30,751 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:41:30,751 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:41:30,751 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:41:30,751 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-18 16:41:30,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:41:30,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:30,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:30,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:41:30,843 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 16:41:30,843 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-18 16:41:30,919 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 46 states and 51 transitions. Complement of second has 11 states. [2018-11-18 16:41:30,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:41:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:41:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 16:41:30,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-18 16:41:30,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:30,920 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 16:41:30,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:30,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:30,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:41:30,980 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 16:41:30,980 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-18 16:41:31,008 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 46 states and 51 transitions. Complement of second has 11 states. [2018-11-18 16:41:31,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:41:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:41:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 16:41:31,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-18 16:41:31,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:31,009 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 16:41:31,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:41:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:31,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:41:31,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:41:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:41:31,073 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 16:41:31,073 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-18 16:41:31,094 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 75 states and 86 transitions. Complement of second has 12 states. [2018-11-18 16:41:31,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:41:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:41:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-11-18 16:41:31,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-18 16:41:31,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:31,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2018-11-18 16:41:31,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:31,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2018-11-18 16:41:31,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:41:31,101 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2018-11-18 16:41:31,102 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 16:41:31,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2018-11-18 16:41:31,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 16:41:31,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 16:41:31,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 16:41:31,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:41:31,103 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:41:31,103 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:41:31,103 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:41:31,103 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 16:41:31,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:41:31,103 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 16:41:31,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 16:41:31,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 04:41:31 BoogieIcfgContainer [2018-11-18 16:41:31,109 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 16:41:31,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:41:31,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:41:31,110 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:41:31,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:41:21" (3/4) ... [2018-11-18 16:41:31,113 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:41:31,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:41:31,114 INFO L168 Benchmark]: Toolchain (without parser) took 9831.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -90.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:41:31,115 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:41:31,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:41:31,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.72 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:41:31,116 INFO L168 Benchmark]: Boogie Preprocessor took 16.53 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:41:31,117 INFO L168 Benchmark]: RCFGBuilder took 444.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -136.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:41:31,117 INFO L168 Benchmark]: BuchiAutomizer took 9154.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:41:31,118 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:41:31,120 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.72 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.53 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 444.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -136.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 9154.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.25 ms. Allocated memory is still 1.1 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(y1) and consists of 7 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function y2 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 7.3s. Construction of modules took 0.4s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 52 SDtfs, 81 SDslu, 9 SDs, 0 SdLazy, 122 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf91 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf91 smp89 dnf100 smp100 tf106 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...