./Ultimate.py --spec ../../sv-benchmarks/c/properties/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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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-aa41828 [2018-11-23 02:52:55,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:52:55,571 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:52:55,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:52:55,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:52:55,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:52:55,578 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:52:55,579 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:52:55,581 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:52:55,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:52:55,582 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:52:55,582 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:52:55,582 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:52:55,583 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:52:55,584 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:52:55,584 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:52:55,585 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:52:55,586 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:52:55,587 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:52:55,588 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:52:55,589 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:52:55,590 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:52:55,591 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:52:55,592 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:52:55,592 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:52:55,593 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:52:55,593 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:52:55,594 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:52:55,594 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:52:55,595 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:52:55,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:52:55,596 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:52:55,596 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:52:55,596 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:52:55,597 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:52:55,597 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:52:55,597 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-23 02:52:55,608 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:52:55,608 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:52:55,609 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:52:55,609 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:52:55,610 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:52:55,610 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 02:52:55,610 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 02:52:55,610 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 02:52:55,610 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 02:52:55,610 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 02:52:55,610 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 02:52:55,611 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 02:52:55,611 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 02:52:55,612 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 02:52:55,612 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:52:55,612 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:52:55,613 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 02:52:55,613 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 02:52:55,613 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_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:52:55,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:52:55,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:52:55,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:52:55,646 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:52:55,646 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:52:55,647 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 02:52:55,682 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/data/fc309c61d/b0ca641062834eee9a01d2c07bdb0b53/FLAG51f57a3d8 [2018-11-23 02:52:56,108 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:52:56,109 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 02:52:56,114 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/data/fc309c61d/b0ca641062834eee9a01d2c07bdb0b53/FLAG51f57a3d8 [2018-11-23 02:52:56,124 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/bin-2019/uautomizer/data/fc309c61d/b0ca641062834eee9a01d2c07bdb0b53 [2018-11-23 02:52:56,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:52:56,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:52:56,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:52:56,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:52:56,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:52:56,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e223a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56, skipping insertion in model container [2018-11-23 02:52:56,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:52:56,151 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:52:56,262 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:52:56,264 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:52:56,273 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:52:56,283 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:52:56,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56 WrapperNode [2018-11-23 02:52:56,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:52:56,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:52:56,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:52:56,284 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:52:56,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:52:56,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:52:56,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:52:56,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:52:56,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... [2018-11-23 02:52:56,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:52:56,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:52:56,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:52:56,318 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:52:56,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:52:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-23 02:52:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-23 02:52:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:52:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:52:56,485 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:52:56,485 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 02:52:56,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:56 BoogieIcfgContainer [2018-11-23 02:52:56,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:52:56,486 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 02:52:56,486 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 02:52:56,488 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 02:52:56,489 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 02:52:56,490 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:52:56" (1/3) ... [2018-11-23 02:52:56,490 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a5107a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:52:56, skipping insertion in model container [2018-11-23 02:52:56,491 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 02:52:56,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:56" (2/3) ... [2018-11-23 02:52:56,491 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a5107a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:52:56, skipping insertion in model container [2018-11-23 02:52:56,491 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 02:52:56,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:56" (3/3) ... [2018-11-23 02:52:56,492 INFO L375 chiAutomizerObserver]: Analyzing ICFG gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 02:52:56,530 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:52:56,530 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 02:52:56,530 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 02:52:56,530 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 02:52:56,530 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:52:56,530 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:52:56,531 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 02:52:56,531 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:52:56,531 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 02:52:56,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-23 02:52:56,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 02:52:56,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:52:56,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:52:56,562 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-23 02:52:56,563 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-23 02:52:56,563 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 02:52:56,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-23 02:52:56,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 02:52:56,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:52:56,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:52:56,565 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-23 02:52:56,565 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-23 02:52:56,572 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 18#L34true assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2018-11-23 02:52:56,572 INFO L796 eck$LassoCheckResult]: Loop: 5#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 21#L16true assume !(~y1 <= 0 || ~y2 <= 0); 15#L19true assume !(~y1 == ~y2); 12#L22true assume ~y1 > ~y2; 3#L23true call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 5#gcdENTRYtrue [2018-11-23 02:52:56,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:56,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1513559, now seen corresponding path program 1 times [2018-11-23 02:52:56,579 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:52:56,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:52:56,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:56,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:52:56,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:56,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash 28756386, now seen corresponding path program 1 times [2018-11-23 02:52:56,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:52:56,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:52:56,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:56,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:52:56,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:56,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash -15763700, now seen corresponding path program 1 times [2018-11-23 02:52:56,664 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:52:56,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:52:56,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:56,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:52:56,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:56,783 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:52:56,784 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:52:56,784 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:52:56,784 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:52:56,784 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:52:56,785 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:52:56,785 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:52:56,785 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:52:56,785 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-23 02:52:56,785 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:52:56,785 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:52:56,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,889 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:52:56,889 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:52:56,893 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:52:56,893 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:52:56,899 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:52:56,899 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_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:52:56,915 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:52:56,915 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:52:56,933 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:52:56,933 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:52:56,960 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:52:56,961 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:52:56,961 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:52:56,961 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:52:56,961 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:52:56,961 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:52:56,961 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:52:56,961 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:52:56,961 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:52:56,961 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-23 02:52:56,961 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:52:56,961 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:52:56,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:56,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:57,005 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:52:57,009 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:52:57,010 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 [2018-11-23 02:52:57,011 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:52:57,011 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:52:57,012 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:52:57,012 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:52:57,012 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:52:57,013 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:52:57,013 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:52:57,016 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:52:57,016 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 [2018-11-23 02:52:57,016 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:52:57,016 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:52:57,017 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:52:57,017 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:52:57,017 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:52:57,017 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:52:57,017 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:52:57,018 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:52:57,019 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 [2018-11-23 02:52:57,019 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:52:57,019 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:52:57,019 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:52:57,019 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:52:57,020 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:52:57,020 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:52:57,020 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:52:57,026 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:52:57,030 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:52:57,031 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:52:57,032 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:52:57,032 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:52:57,032 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:52:57,033 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2018-11-23 02:52:57,033 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:52:57,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:52:57,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:52:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:52:57,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:52:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:57,126 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 [2018-11-23 02:52:57,127 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 5 states. [2018-11-23 02:52:57,273 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 5 states. Result 93 states and 129 transitions. Complement of second has 30 states. [2018-11-23 02:52:57,274 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 [2018-11-23 02:52:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 02:52:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2018-11-23 02:52:57,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 5 letters. [2018-11-23 02:52:57,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:52:57,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 9 letters. Loop has 5 letters. [2018-11-23 02:52:57,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:52:57,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 10 letters. [2018-11-23 02:52:57,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:52:57,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 129 transitions. [2018-11-23 02:52:57,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 02:52:57,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 35 states and 40 transitions. [2018-11-23 02:52:57,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-23 02:52:57,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-23 02:52:57,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 40 transitions. [2018-11-23 02:52:57,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:52:57,289 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 40 transitions. [2018-11-23 02:52:57,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 40 transitions. [2018-11-23 02:52:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 17. [2018-11-23 02:52:57,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 02:52:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-23 02:52:57,307 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-23 02:52:57,308 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-23 02:52:57,308 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 02:52:57,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2018-11-23 02:52:57,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 02:52:57,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:52:57,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:52:57,309 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-23 02:52:57,309 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-23 02:52:57,309 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 209#L30 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 214#L34 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 200#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 202#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 205#L16 [2018-11-23 02:52:57,309 INFO L796 eck$LassoCheckResult]: Loop: 205#L16 assume !(~y1 <= 0 || ~y2 <= 0); 210#L19 assume !(~y1 == ~y2); 211#L22 assume !(~y1 > ~y2); 204#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 203#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 205#L16 [2018-11-23 02:52:57,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash 46920329, now seen corresponding path program 1 times [2018-11-23 02:52:57,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:52:57,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:52:57,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:57,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:52:57,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:57,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:57,319 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 1 times [2018-11-23 02:52:57,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:52:57,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:52:57,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:57,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:52:57,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:57,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash -488671755, now seen corresponding path program 1 times [2018-11-23 02:52:57,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:52:57,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:52:57,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:57,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:52:57,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:52:57,406 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:52:57,406 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:52:57,406 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:52:57,406 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:52:57,406 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:52:57,406 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:52:57,406 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:52:57,407 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:52:57,407 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-23 02:52:57,407 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:52:57,407 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:52:57,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:57,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:57,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:57,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:52:57,521 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:52:57,521 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:52:57,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:52:57,523 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:52:57,544 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:52:57,544 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:53:01,000 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:53:01,001 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:53:01,001 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:53:01,002 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:53:01,002 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:53:01,002 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:53:01,002 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:53:01,002 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:53:01,002 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:53:01,002 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-23 02:53:01,002 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:53:01,002 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:53:01,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,076 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:53:01,076 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:53:01,076 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 [2018-11-23 02:53:01,077 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:53:01,077 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:53:01,077 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:53:01,077 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:53:01,077 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:53:01,078 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:53:01,078 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:53:01,082 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:53:01,085 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:53:01,086 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:53:01,086 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:53:01,086 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:53:01,086 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:53:01,086 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-23 02:53:01,087 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:53:01,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:53:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:01,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:01,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:53:01,135 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 [2018-11-23 02:53:01,135 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-23 02:53:01,154 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 53 states and 60 transitions. Complement of second has 11 states. [2018-11-23 02:53:01,155 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 [2018-11-23 02:53:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:53:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-23 02:53:01,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 5 letters. [2018-11-23 02:53:01,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:01,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-23 02:53:01,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:01,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-23 02:53:01,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:01,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 60 transitions. [2018-11-23 02:53:01,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 02:53:01,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 32 states and 36 transitions. [2018-11-23 02:53:01,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-23 02:53:01,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-23 02:53:01,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 36 transitions. [2018-11-23 02:53:01,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:53:01,159 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-23 02:53:01,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 36 transitions. [2018-11-23 02:53:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2018-11-23 02:53:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 02:53:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-23 02:53:01,161 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-23 02:53:01,161 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-23 02:53:01,161 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 02:53:01,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2018-11-23 02:53:01,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 02:53:01,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:53:01,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:53:01,162 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:53:01,162 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-23 02:53:01,163 INFO L794 eck$LassoCheckResult]: Stem: 335#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 336#L30 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 344#L34 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 331#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 332#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 333#L16 assume !(~y1 <= 0 || ~y2 <= 0); 349#L19 assume !(~y1 == ~y2); 348#L22 assume ~y1 > ~y2; 327#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 329#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 [2018-11-23 02:53:01,163 INFO L796 eck$LassoCheckResult]: Loop: 345#L16 assume !(~y1 <= 0 || ~y2 <= 0); 337#L19 assume !(~y1 == ~y2); 339#L22 assume !(~y1 > ~y2); 338#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 342#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 [2018-11-23 02:53:01,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:53:01,163 INFO L82 PathProgramCache]: Analyzing trace with hash -488674700, now seen corresponding path program 2 times [2018-11-23 02:53:01,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:53:01,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:53:01,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:53:01,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:53:01,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:53:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:53:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:53:01,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:53:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 2 times [2018-11-23 02:53:01,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:53:01,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:53:01,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:53:01,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:53:01,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:53:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:53:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:53:01,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:53:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1201587990, now seen corresponding path program 1 times [2018-11-23 02:53:01,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:53:01,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:53:01,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:53:01,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:53:01,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:53:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:53:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:53:01,236 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:53:01,236 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:53:01,237 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:53:01,237 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:53:01,237 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:53:01,237 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:53:01,237 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:53:01,237 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:53:01,237 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-23 02:53:01,237 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:53:01,237 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:53:01,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,289 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:53:01,289 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:53:01,291 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:53:01,291 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:53:01,293 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:53:01,293 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_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:53:01,309 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:53:01,309 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42923f8-e96b-4209-8373-c07ef256b863/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 [2018-11-23 02:53:01,336 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:53:01,336 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:53:01,889 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:53:01,891 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:53:01,891 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:53:01,891 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:53:01,892 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:53:01,892 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:53:01,892 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:53:01,892 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:53:01,892 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:53:01,892 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-23 02:53:01,892 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:53:01,892 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:53:01,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:53:01,960 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:53:01,960 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:53:01,960 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 [2018-11-23 02:53:01,962 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:53:01,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:53:01,963 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:53:01,963 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:53:01,963 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:53:01,963 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:53:01,963 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:53:01,964 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:53:01,965 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 [2018-11-23 02:53:01,965 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:53:01,965 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:53:01,965 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:53:01,965 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:53:01,966 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:53:01,970 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:53:01,970 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:53:01,976 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:53:01,980 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:53:01,980 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:53:01,980 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:53:01,980 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:53:01,980 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:53:01,981 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-23 02:53:01,981 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:53:01,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:53:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:02,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:02,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:53:02,058 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 [2018-11-23 02:53:02,058 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 02:53:02,085 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 50 transitions. Complement of second has 11 states. [2018-11-23 02:53:02,086 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 [2018-11-23 02:53:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:53:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-23 02:53:02,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-23 02:53:02,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:02,087 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:53:02,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:53:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:02,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:02,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:53:02,149 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 [2018-11-23 02:53:02,150 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 02:53:02,164 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 50 transitions. Complement of second has 11 states. [2018-11-23 02:53:02,165 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 [2018-11-23 02:53:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:53:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-23 02:53:02,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-23 02:53:02,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:02,166 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:53:02,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:53:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:02,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:53:02,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:53:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:53:02,212 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 [2018-11-23 02:53:02,212 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 02:53:02,227 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 74 states and 85 transitions. Complement of second has 12 states. [2018-11-23 02:53:02,230 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 [2018-11-23 02:53:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:53:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-23 02:53:02,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-23 02:53:02,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:02,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 15 letters. Loop has 5 letters. [2018-11-23 02:53:02,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:02,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 10 letters. [2018-11-23 02:53:02,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:53:02,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 85 transitions. [2018-11-23 02:53:02,233 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 02:53:02,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 0 states and 0 transitions. [2018-11-23 02:53:02,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 02:53:02,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 02:53:02,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 02:53:02,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 02:53:02,234 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:53:02,234 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:53:02,234 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:53:02,234 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 02:53:02,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:53:02,234 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 02:53:02,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 02:53:02,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:53:02 BoogieIcfgContainer [2018-11-23 02:53:02,239 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 02:53:02,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:53:02,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:53:02,240 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:53:02,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:56" (3/4) ... [2018-11-23 02:53:02,242 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 02:53:02,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:53:02,243 INFO L168 Benchmark]: Toolchain (without parser) took 6115.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -115.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:53:02,244 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:53:02,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.93 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:53:02,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.42 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:53:02,245 INFO L168 Benchmark]: Boogie Preprocessor took 12.84 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:53:02,245 INFO L168 Benchmark]: RCFGBuilder took 167.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -176.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:53:02,246 INFO L168 Benchmark]: BuchiAutomizer took 5753.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. [2018-11-23 02:53:02,246 INFO L168 Benchmark]: Witness Printer took 3.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:53:02,249 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 155.93 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 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 20.42 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.84 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 167.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -176.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5753.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 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 5.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 5.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. 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 24 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 47 SDtfs, 78 SDslu, 8 SDs, 0 SdLazy, 115 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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: 5ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...