./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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/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_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/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 0.1.23-1dbac8b [2018-11-10 05:27:19,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:27:19,220 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:27:19,228 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:27:19,228 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:27:19,229 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:27:19,229 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:27:19,231 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:27:19,232 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:27:19,232 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:27:19,233 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:27:19,233 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:27:19,234 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:27:19,234 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:27:19,235 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:27:19,236 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:27:19,236 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:27:19,237 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:27:19,239 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:27:19,240 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:27:19,240 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:27:19,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:27:19,243 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:27:19,243 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:27:19,243 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:27:19,244 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:27:19,244 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:27:19,245 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:27:19,246 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:27:19,246 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:27:19,246 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:27:19,247 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:27:19,247 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:27:19,247 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:27:19,248 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:27:19,248 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:27:19,249 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-10 05:27:19,259 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:27:19,259 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:27:19,260 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:27:19,260 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:27:19,261 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:27:19,261 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 05:27:19,261 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 05:27:19,261 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 05:27:19,261 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 05:27:19,261 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 05:27:19,261 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 05:27:19,261 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:27:19,261 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 05:27:19,262 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:27:19,263 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:27:19,263 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 05:27:19,263 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 05:27:19,263 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:27:19,263 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:27:19,263 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 05:27:19,263 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:27:19,263 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:27:19,263 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 05:27:19,264 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 05:27:19,264 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_f25cfb43-3829-4e14-8700-d752a3ff1b3c/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 [2018-11-10 05:27:19,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:27:19,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:27:19,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:27:19,299 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:27:19,299 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:27:19,300 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 05:27:19,339 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/data/9188703da/5b180515e86a4d9196c4ba69a4774ff9/FLAG039a9d9d1 [2018-11-10 05:27:19,756 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:27:19,756 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 05:27:19,760 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/data/9188703da/5b180515e86a4d9196c4ba69a4774ff9/FLAG039a9d9d1 [2018-11-10 05:27:19,771 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/data/9188703da/5b180515e86a4d9196c4ba69a4774ff9 [2018-11-10 05:27:19,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:27:19,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:27:19,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:27:19,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:27:19,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:27:19,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeb45d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19, skipping insertion in model container [2018-11-10 05:27:19,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:27:19,804 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:27:19,911 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:27:19,913 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:27:19,923 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:27:19,931 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:27:19,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19 WrapperNode [2018-11-10 05:27:19,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:27:19,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:27:19,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:27:19,932 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:27:19,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:27:19,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:27:19,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:27:19,951 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:27:19,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... [2018-11-10 05:27:19,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:27:19,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:27:19,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:27:19,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:27:19,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:27:20,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:27:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-10 05:27:20,031 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-10 05:27:20,135 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:27:20,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:27:20 BoogieIcfgContainer [2018-11-10 05:27:20,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:27:20,136 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 05:27:20,136 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 05:27:20,138 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 05:27:20,139 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:27:20,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 05:27:19" (1/3) ... [2018-11-10 05:27:20,139 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53c403d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 05:27:20, skipping insertion in model container [2018-11-10 05:27:20,139 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:27:20,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:27:19" (2/3) ... [2018-11-10 05:27:20,140 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53c403d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 05:27:20, skipping insertion in model container [2018-11-10 05:27:20,140 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 05:27:20,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:27:20" (3/3) ... [2018-11-10 05:27:20,141 INFO L375 chiAutomizerObserver]: Analyzing ICFG gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 05:27:20,185 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:27:20,186 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 05:27:20,186 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 05:27:20,186 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 05:27:20,186 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:27:20,186 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:27:20,187 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 05:27:20,187 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:27:20,187 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 05:27:20,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-10 05:27:20,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 05:27:20,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:27:20,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:27:20,225 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 05:27:20,225 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 05:27:20,225 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 05:27:20,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-10 05:27:20,227 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 05:27:20,227 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:27:20,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:27:20,228 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 05:27:20,228 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 05:27:20,234 INFO L793 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 19#L34true assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2018-11-10 05:27:20,235 INFO L795 eck$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 [2018-11-10 05:27:20,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:20,240 INFO L82 PathProgramCache]: Analyzing trace with hash 28695875, now seen corresponding path program 1 times [2018-11-10 05:27:20,241 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:20,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:20,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:20,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:27:20,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:20,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:20,313 INFO L82 PathProgramCache]: Analyzing trace with hash 52613989, now seen corresponding path program 1 times [2018-11-10 05:27:20,313 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:20,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:20,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:20,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:27:20,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:20,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:20,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1513025379, now seen corresponding path program 1 times [2018-11-10 05:27:20,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:20,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:20,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:20,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:27:20,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:20,446 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:27:20,446 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:27:20,447 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:27:20,447 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:27:20,447 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:27:20,447 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:20,447 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:27:20,447 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:27:20,447 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-10 05:27:20,448 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:27:20,448 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:27:20,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,558 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:27:20,558 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:20,561 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:27:20,561 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:27:20,566 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:27:20,566 INFO L446 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_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:20,582 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:27:20,582 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:20,599 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:27:20,600 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:27:20,628 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:27:20,629 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:27:20,629 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:27:20,629 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:27:20,629 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:27:20,629 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:27:20,629 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:20,629 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:27:20,629 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:27:20,629 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-10 05:27:20,629 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:27:20,629 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:27:20,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:20,688 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:27:20,692 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:27:20,693 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 05:27:20,694 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:27:20,694 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:27:20,694 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:27:20,694 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:27:20,695 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:27:20,696 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:27:20,696 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:27:20,698 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:27:20,699 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 05:27:20,699 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:27:20,699 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:27:20,699 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:27:20,700 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:27:20,700 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:27:20,700 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:27:20,700 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:27:20,701 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:27:20,701 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 05:27:20,702 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:27:20,702 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:27:20,702 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:27:20,702 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:27:20,702 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:27:20,703 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:27:20,703 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:27:20,710 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:27:20,715 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:27:20,715 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 05:27:20,717 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:27:20,717 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:27:20,717 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:27:20,717 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2018-11-10 05:27:20,718 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:27:20,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:20,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:20,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:27:20,820 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 [2018-11-10 05:27:20,821 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 5 states. [2018-11-10 05:27:20,981 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. [2018-11-10 05:27:20,982 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 [2018-11-10 05:27:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 05:27:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2018-11-10 05:27:20,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2018-11-10 05:27:20,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:20,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-10 05:27:20,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:20,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-10 05:27:20,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:20,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 130 transitions. [2018-11-10 05:27:20,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:27:21,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 36 states and 41 transitions. [2018-11-10 05:27:21,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-10 05:27:21,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-10 05:27:21,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2018-11-10 05:27:21,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:27:21,002 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-11-10 05:27:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2018-11-10 05:27:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2018-11-10 05:27:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 05:27:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-11-10 05:27:21,028 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-10 05:27:21,028 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-10 05:27:21,028 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 05:27:21,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2018-11-10 05:27:21,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:27:21,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:27:21,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:27:21,029 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-10 05:27:21,029 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 05:27:21,030 INFO L793 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 203#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 204#L30 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 220#L34 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 207#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 209#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 212#L16 [2018-11-10 05:27:21,030 INFO L795 eck$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 [2018-11-10 05:27:21,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:21,030 INFO L82 PathProgramCache]: Analyzing trace with hash 889572150, now seen corresponding path program 1 times [2018-11-10 05:27:21,030 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:21,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:21,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:21,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:27:21,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:21,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:21,041 INFO L82 PathProgramCache]: Analyzing trace with hash 56433324, now seen corresponding path program 1 times [2018-11-10 05:27:21,042 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:21,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:21,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:21,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:27:21,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:21,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:21,050 INFO L82 PathProgramCache]: Analyzing trace with hash -340850537, now seen corresponding path program 1 times [2018-11-10 05:27:21,050 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:21,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:21,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:21,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:27:21,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:21,140 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:27:21,140 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:27:21,140 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:27:21,140 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:27:21,141 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:27:21,141 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:21,141 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:27:21,141 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:27:21,141 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-10 05:27:21,141 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:27:21,141 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:27:21,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:21,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:21,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:21,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:21,225 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:27:21,226 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:21,228 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:27:21,228 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:21,249 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:27:21,249 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:27:22,542 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:27:22,543 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:27:22,543 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:27:22,544 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:27:22,544 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:27:22,544 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:27:22,544 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:22,544 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:27:22,544 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:27:22,544 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-10 05:27:22,544 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:27:22,544 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:27:22,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,641 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:27:22,641 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:27:22,641 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 05:27:22,642 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:27:22,642 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:27:22,643 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:27:22,643 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:27:22,643 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:27:22,644 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:27:22,644 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:27:22,652 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:27:22,657 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:27:22,658 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 05:27:22,658 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:27:22,658 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:27:22,658 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:27:22,658 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-10 05:27:22,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:27:22,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:22,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:22,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:27:22,712 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 05:27:22,712 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-10 05:27:22,730 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. [2018-11-10 05:27:22,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 05:27:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 05:27:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 05:27:22,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2018-11-10 05:27:22,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:22,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 05:27:22,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:22,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2018-11-10 05:27:22,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:22,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2018-11-10 05:27:22,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:27:22,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2018-11-10 05:27:22,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 05:27:22,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-10 05:27:22,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2018-11-10 05:27:22,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 05:27:22,734 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-10 05:27:22,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2018-11-10 05:27:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-11-10 05:27:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 05:27:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-10 05:27:22,736 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-10 05:27:22,736 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-10 05:27:22,736 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 05:27:22,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2018-11-10 05:27:22,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 05:27:22,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 05:27:22,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 05:27:22,737 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:27:22,737 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 05:27:22,738 INFO L793 eck$LassoCheckResult]: Stem: 347#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 337#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 338#L30 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 355#L34 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 340#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 344#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 assume !(~y1 <= 0 || ~y2 <= 0); 360#L19 assume !(~y1 == ~y2); 359#L22 assume ~y1 > ~y2; 339#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 341#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 356#L16 [2018-11-10 05:27:22,738 INFO L795 eck$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 [2018-11-10 05:27:22,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:22,738 INFO L82 PathProgramCache]: Analyzing trace with hash -340853482, now seen corresponding path program 2 times [2018-11-10 05:27:22,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:22,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:22,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:22,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:27:22,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:22,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 56433324, now seen corresponding path program 2 times [2018-11-10 05:27:22,750 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:22,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:22,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:22,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:27:22,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:22,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash 307888823, now seen corresponding path program 1 times [2018-11-10 05:27:22,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:27:22,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:27:22,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:22,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:27:22,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:27:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:27:22,815 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:27:22,815 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:27:22,815 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:27:22,815 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:27:22,815 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 05:27:22,815 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:22,816 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:27:22,816 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:27:22,816 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-10 05:27:22,816 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:27:22,816 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:27:22,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:22,867 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:27:22,868 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:22,869 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:27:22,869 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:27:22,872 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 05:27:22,872 INFO L446 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_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:22,889 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 05:27:22,889 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f25cfb43-3829-4e14-8700-d752a3ff1b3c/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:22,910 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 05:27:22,910 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 05:27:23,343 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 05:27:23,345 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 05:27:23,345 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 05:27:23,345 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 05:27:23,346 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 05:27:23,346 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 05:27:23,346 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 05:27:23,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 05:27:23,346 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 05:27:23,346 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-10 05:27:23,346 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 05:27:23,346 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 05:27:23,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:23,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:23,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:23,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 05:27:23,407 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 05:27:23,407 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 05:27:23,408 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 05:27:23,408 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:27:23,408 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:27:23,408 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:27:23,409 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:27:23,409 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:27:23,409 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:27:23,409 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:27:23,410 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 05:27:23,410 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 05:27:23,411 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 05:27:23,411 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 05:27:23,411 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 05:27:23,411 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 05:27:23,411 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 05:27:23,412 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 05:27:23,412 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 05:27:23,415 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 05:27:23,419 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 05:27:23,419 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 05:27:23,420 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 05:27:23,420 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 05:27:23,420 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 05:27:23,420 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-10 05:27:23,420 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 05:27:23,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:23,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:23,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:27:23,470 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 05:27:23,470 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 05:27:23,484 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. [2018-11-10 05:27:23,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 05:27:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 05:27:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 05:27:23,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 05:27:23,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:23,486 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 05:27:23,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:23,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:23,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:27:23,532 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 [2018-11-10 05:27:23,532 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 05:27:23,548 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. [2018-11-10 05:27:23,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 05:27:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 05:27:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 05:27:23,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 05:27:23,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:23,550 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 05:27:23,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:27:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:23,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:27:23,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:27:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:27:23,589 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 [2018-11-10 05:27:23,589 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 05:27:23,607 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. [2018-11-10 05:27:23,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 05:27:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 05:27:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-11-10 05:27:23,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 05:27:23,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:23,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2018-11-10 05:27:23,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:23,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2018-11-10 05:27:23,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 05:27:23,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2018-11-10 05:27:23,611 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 05:27:23,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2018-11-10 05:27:23,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 05:27:23,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 05:27:23,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 05:27:23,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 05:27:23,612 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:27:23,612 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:27:23,612 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:27:23,612 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 05:27:23,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:27:23,612 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 05:27:23,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 05:27:23,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 05:27:23 BoogieIcfgContainer [2018-11-10 05:27:23,618 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 05:27:23,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:27:23,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:27:23,618 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:27:23,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:27:20" (3/4) ... [2018-11-10 05:27:23,622 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 05:27:23,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:27:23,622 INFO L168 Benchmark]: Toolchain (without parser) took 3848.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -117.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-10 05:27:23,624 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:27:23,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:27:23,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.35 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:27:23,625 INFO L168 Benchmark]: Boogie Preprocessor took 9.44 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:27:23,625 INFO L168 Benchmark]: RCFGBuilder took 175.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:27:23,626 INFO L168 Benchmark]: BuchiAutomizer took 3482.01 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:27:23,626 INFO L168 Benchmark]: Witness Printer took 3.81 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. [2018-11-10 05:27:23,629 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.35 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.44 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3482.01 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.81 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 3.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.1s. 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 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, 0.1s 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: 6ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...