./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:10:30,259 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:10:30,260 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:10:30,271 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:10:30,272 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:10:30,272 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:10:30,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:10:30,275 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:10:30,276 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:10:30,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:10:30,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:10:30,278 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:10:30,279 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:10:30,280 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:10:30,280 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:10:30,281 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:10:30,281 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:10:30,283 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:10:30,285 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:10:30,286 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:10:30,287 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:10:30,288 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:10:30,289 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:10:30,290 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:10:30,290 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:10:30,291 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:10:30,292 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:10:30,292 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:10:30,293 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:10:30,294 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:10:30,294 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:10:30,295 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:10:30,295 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:10:30,295 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:10:30,296 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:10:30,296 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:10:30,297 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:10:30,308 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:10:30,308 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:10:30,309 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:10:30,310 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:10:30,310 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:10:30,310 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:10:30,311 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:10:30,311 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:10:30,311 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:10:30,311 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:10:30,311 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:10:30,311 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:10:30,311 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:10:30,312 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:10:30,313 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:10:30,313 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:10:30,313 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:10:30,313 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:10:30,313 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:10:30,313 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:10:30,316 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:10:30,316 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_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 [2018-10-27 06:10:30,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:10:30,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:10:30,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:10:30,358 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:10:30,358 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:10:30,359 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c [2018-10-27 06:10:30,407 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/data/e48870830/3fa4909941e7434f8714d138fe78542d/FLAGf20a29f86 [2018-10-27 06:10:30,788 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:10:30,788 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/sv-benchmarks/c/termination-restricted-15/c.01_assume_true-termination_true-no-overflow.c [2018-10-27 06:10:30,793 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/data/e48870830/3fa4909941e7434f8714d138fe78542d/FLAGf20a29f86 [2018-10-27 06:10:30,804 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/data/e48870830/3fa4909941e7434f8714d138fe78542d [2018-10-27 06:10:30,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:10:30,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:10:30,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:10:30,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:10:30,812 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:10:30,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:30,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43804fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30, skipping insertion in model container [2018-10-27 06:10:30,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:30,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:10:30,836 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:10:30,946 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:10:30,948 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:10:30,959 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:10:30,969 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:10:30,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30 WrapperNode [2018-10-27 06:10:30,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:10:30,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:10:30,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:10:30,971 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:10:30,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:30,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:30,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:10:30,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:10:30,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:10:30,999 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:10:31,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:31,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:31,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:31,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:31,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:31,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:31,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... [2018-10-27 06:10:31,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:10:31,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:10:31,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:10:31,016 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:10:31,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:10:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:10:31,355 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:10:31,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:10:31 BoogieIcfgContainer [2018-10-27 06:10:31,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:10:31,356 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:10:31,356 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:10:31,360 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:10:31,360 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:10:31,360 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:10:30" (1/3) ... [2018-10-27 06:10:31,361 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e803d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:10:31, skipping insertion in model container [2018-10-27 06:10:31,362 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:10:31,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:30" (2/3) ... [2018-10-27 06:10:31,363 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e803d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:10:31, skipping insertion in model container [2018-10-27 06:10:31,363 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:10:31,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:10:31" (3/3) ... [2018-10-27 06:10:31,365 INFO L375 chiAutomizerObserver]: Analyzing ICFG c.01_assume_true-termination_true-no-overflow.c [2018-10-27 06:10:31,462 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:10:31,463 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:10:31,463 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:10:31,463 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:10:31,463 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:10:31,463 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:10:31,463 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:10:31,464 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:10:31,464 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:10:31,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:10:31,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:10:31,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:10:31,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:10:31,524 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:10:31,524 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:10:31,524 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:10:31,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:10:31,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:10:31,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:10:31,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:10:31,526 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:10:31,526 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:10:31,545 INFO L793 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L9-3true [2018-10-27 06:10:31,545 INFO L795 eck$LassoCheckResult]: Loop: 8#L9-3true assume true; 11#L9-1true assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 12#L11-3true assume !true; 9#L11-4true main_~x~0 := main_~x~0 - 1; 8#L9-3true [2018-10-27 06:10:31,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:31,551 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:10:31,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:31,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:31,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:31,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:31,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-10-27 06:10:31,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:31,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:31,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:31,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:31,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:10:31,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:10:31,699 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:10:31,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 06:10:31,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 06:10:31,715 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-10-27 06:10:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:10:31,721 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-27 06:10:31,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:10:31,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-10-27 06:10:31,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:10:31,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-10-27 06:10:31,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:10:31,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-10-27 06:10:31,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-10-27 06:10:31,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:10:31,731 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:10:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-10-27 06:10:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-27 06:10:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-27 06:10:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-10-27 06:10:31,751 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:10:31,751 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:10:31,751 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:10:31,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-10-27 06:10:31,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:10:31,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:10:31,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:10:31,752 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:10:31,753 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:10:31,753 INFO L793 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 31#L9-3 [2018-10-27 06:10:31,753 INFO L795 eck$LassoCheckResult]: Loop: 31#L9-3 assume true; 36#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 34#L11-3 assume true; 32#L11-1 assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 33#L11-4 main_~x~0 := main_~x~0 - 1; 31#L9-3 [2018-10-27 06:10:31,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-10-27 06:10:31,753 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:31,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:31,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:31,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:31,760 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-10-27 06:10:31,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:31,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:31,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:10:31,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:31,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-10-27 06:10:31,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:31,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:31,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:31,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:31,883 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:10:31,884 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:10:31,884 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:10:31,885 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:10:31,885 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:10:31,885 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:31,885 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:10:31,885 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:10:31,886 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:10:31,886 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:10:31,886 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:10:31,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:31,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:31,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:32,218 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:10:32,219 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:32,224 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:32,224 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:10:32,254 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:10:32,255 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:32,258 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:32,258 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:10:32,276 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:10:32,276 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:32,279 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:32,279 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:32,309 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:10:32,310 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:10:32,334 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:10:32,335 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:10:32,335 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:10:32,335 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:10:32,336 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:10:32,336 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:10:32,336 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:32,336 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:10:32,336 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:10:32,336 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:10:32,336 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:10:32,336 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:10:32,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:32,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:32,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:32,460 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:10:32,464 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:10:32,465 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:10:32,467 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:10:32,467 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:10:32,467 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:10:32,467 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:10:32,470 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:10:32,471 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:10:32,477 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:10:32,477 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:10:32,479 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:10:32,479 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:10:32,479 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:10:32,479 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:10:32,482 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:10:32,482 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:10:32,490 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:10:32,491 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:10:32,492 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:10:32,492 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:10:32,492 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:10:32,493 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:10:32,494 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:10:32,495 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:10:32,495 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:10:32,503 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:10:32,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:10:32,509 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:10:32,511 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:10:32,511 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:10:32,511 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:10:32,511 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-10-27 06:10:32,513 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:10:32,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:32,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:32,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:32,691 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:10:32,692 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-10-27 06:10:32,727 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-10-27 06:10:32,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:10:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:10:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-10-27 06:10:32,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 5 letters. [2018-10-27 06:10:32,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:32,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 5 letters. [2018-10-27 06:10:32,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:32,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 10 letters. [2018-10-27 06:10:32,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:32,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2018-10-27 06:10:32,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:10:32,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 14 transitions. [2018-10-27 06:10:32,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-10-27 06:10:32,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-10-27 06:10:32,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-10-27 06:10:32,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:10:32,733 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:10:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-10-27 06:10:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-27 06:10:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-27 06:10:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-10-27 06:10:32,736 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:10:32,736 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:10:32,736 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:10:32,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-10-27 06:10:32,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:10:32,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:10:32,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:10:32,737 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:10:32,738 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:10:32,738 INFO L793 eck$LassoCheckResult]: Stem: 100#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 94#L9-3 assume true; 101#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 96#L11-3 [2018-10-27 06:10:32,738 INFO L795 eck$LassoCheckResult]: Loop: 96#L11-3 assume true; 95#L11-1 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 96#L11-3 [2018-10-27 06:10:32,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:32,738 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-10-27 06:10:32,739 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:32,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:32,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:32,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:32,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:32,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-10-27 06:10:32,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:32,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:32,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:32,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:32,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:32,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:32,752 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-10-27 06:10:32,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:32,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:32,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:32,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:32,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:32,821 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:10:32,821 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:10:32,821 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:10:32,821 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:10:32,821 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:10:32,821 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:32,821 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:10:32,821 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:10:32,822 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:10:32,822 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:10:32,822 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:10:32,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:32,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:32,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:32,952 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:10:32,952 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/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 [2018-10-27 06:10:32,960 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:32,960 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:10:32,977 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:10:32,977 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:32,991 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:32,991 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:10:33,032 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:10:33,032 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 06:10:33,044 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:33,044 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 06:10:33,087 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:10:33,087 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:33,130 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:10:33,133 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:10:33,133 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:10:33,133 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:10:33,133 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:10:33,134 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:10:33,134 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:33,134 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:10:33,134 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:10:33,134 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:10:33,134 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:10:33,134 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:10:33,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,309 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:10:33,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,372 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:10:33,372 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:10:33,372 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:10:33,374 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:10:33,374 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:10:33,374 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:10:33,375 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:10:33,376 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:10:33,376 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:10:33,386 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:10:33,389 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:10:33,390 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:10:33,390 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:10:33,390 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:10:33,390 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:10:33,390 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:10:33,391 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:10:33,391 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:10:33,403 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:10:33,408 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:10:33,411 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:10:33,412 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:10:33,412 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:10:33,412 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:10:33,412 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2018-10-27 06:10:33,412 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:10:33,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:33,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:33,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:33,438 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:10:33,438 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-10-27 06:10:33,455 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 28 states and 34 transitions. Complement of second has 5 states. [2018-10-27 06:10:33,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:10:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:10:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-10-27 06:10:33,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-10-27 06:10:33,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:33,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-10-27 06:10:33,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:33,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-10-27 06:10:33,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:33,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2018-10-27 06:10:33,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:10:33,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 23 transitions. [2018-10-27 06:10:33,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:10:33,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-10-27 06:10:33,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-10-27 06:10:33,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:10:33,459 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-10-27 06:10:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-10-27 06:10:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-10-27 06:10:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-27 06:10:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-10-27 06:10:33,461 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:10:33,461 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:10:33,461 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:10:33,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-10-27 06:10:33,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:10:33,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:10:33,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:10:33,465 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-10-27 06:10:33,465 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:10:33,465 INFO L793 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 170#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 171#L9-3 assume true; 177#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 175#L11-3 assume true; 184#L11-1 assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 181#L11-4 main_~x~0 := main_~x~0 - 1; 178#L9-3 assume true; 179#L9-1 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 173#L11-3 [2018-10-27 06:10:33,465 INFO L795 eck$LassoCheckResult]: Loop: 173#L11-3 assume true; 172#L11-1 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 173#L11-3 [2018-10-27 06:10:33,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:33,466 INFO L82 PathProgramCache]: Analyzing trace with hash 383141811, now seen corresponding path program 2 times [2018-10-27 06:10:33,466 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:33,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:33,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:33,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:33,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:33,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-10-27 06:10:33,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:33,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:33,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:33,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:10:33,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:10:33,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:33,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1167906567, now seen corresponding path program 1 times [2018-10-27 06:10:33,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:10:33,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:10:33,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:33,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:10:33,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:10:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:33,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:10:33,564 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:10:33,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:10:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:33,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:33,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:10:33,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-27 06:10:33,742 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:10:33,742 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:10:33,742 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:10:33,742 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:10:33,742 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:10:33,742 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:33,743 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:10:33,743 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:10:33,743 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:10:33,743 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:10:33,743 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:10:33,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,815 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:10:33,815 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:33,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:33,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:10:33,835 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:10:33,835 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:33,842 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:10:33,843 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7450c68-4ed4-4aaf-8933-0eb41c197efb/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:33,864 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:10:33,864 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:10:33,886 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:10:33,887 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:10:33,887 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:10:33,887 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:10:33,888 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:10:33,888 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:10:33,888 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:10:33,888 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:10:33,888 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:10:33,888 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:10:33,888 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:10:33,888 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:10:33,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:10:33,957 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:10:33,957 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:10:33,957 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:10:33,958 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:10:33,958 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:10:33,958 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:10:33,958 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:10:33,959 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:10:33,959 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:10:33,963 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:10:33,964 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:10:33,964 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:10:33,964 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:10:33,964 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:10:33,964 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:10:33,965 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:10:33,965 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:10:33,965 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:10:33,971 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:10:33,974 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:10:33,975 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:10:33,975 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:10:33,975 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:10:33,975 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:10:33,975 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2018-10-27 06:10:33,976 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:10:33,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:33,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:34,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:34,003 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:10:34,003 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-10-27 06:10:34,014 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-10-27 06:10:34,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:10:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:10:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-10-27 06:10:34,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-10-27 06:10:34,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:34,015 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:10:34,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:34,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:34,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:34,075 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:10:34,075 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-10-27 06:10:34,084 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-10-27 06:10:34,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:10:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:10:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-10-27 06:10:34,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-10-27 06:10:34,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:34,085 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:10:34,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:10:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:34,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:10:34,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:10:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:10:34,119 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:10:34,119 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-10-27 06:10:34,135 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 24 states and 29 transitions. Complement of second has 4 states. [2018-10-27 06:10:34,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:10:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:10:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-10-27 06:10:34,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 2 letters. [2018-10-27 06:10:34,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:34,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2018-10-27 06:10:34,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:34,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2018-10-27 06:10:34,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:10:34,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 29 transitions. [2018-10-27 06:10:34,140 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:10:34,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2018-10-27 06:10:34,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:10:34,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:10:34,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:10:34,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:10:34,140 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:10:34,141 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:10:34,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 06:10:34,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:10:34,141 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2018-10-27 06:10:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:10:34,141 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-10-27 06:10:34,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:10:34,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-10-27 06:10:34,142 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:10:34,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 06:10:34,142 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:10:34,142 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:10:34,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:10:34,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:10:34,142 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:10:34,142 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:10:34,142 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:10:34,142 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:10:34,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:10:34,143 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:10:34,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:10:34,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:10:34 BoogieIcfgContainer [2018-10-27 06:10:34,148 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:10:34,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:10:34,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:10:34,149 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:10:34,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:10:31" (3/4) ... [2018-10-27 06:10:34,153 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:10:34,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:10:34,154 INFO L168 Benchmark]: Toolchain (without parser) took 3346.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 955.8 MB in the beginning and 957.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 190.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:10:34,155 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:10:34,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.85 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 944.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:10:34,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.54 ms. Allocated memory is still 1.0 GB. Free memory is still 944.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:10:34,156 INFO L168 Benchmark]: Boogie Preprocessor took 16.41 ms. Allocated memory is still 1.0 GB. Free memory was 944.9 MB in the beginning and 942.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:10:34,156 INFO L168 Benchmark]: RCFGBuilder took 340.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 942.2 MB in the beginning and 1.2 GB in the end (delta: -239.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:10:34,157 INFO L168 Benchmark]: BuchiAutomizer took 2792.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 957.6 MB in the end (delta: 224.2 MB). Peak memory consumption was 224.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:10:34,157 INFO L168 Benchmark]: Witness Printer took 4.65 ms. Allocated memory is still 1.2 GB. Free memory is still 957.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:10:34,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.85 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 944.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.54 ms. Allocated memory is still 1.0 GB. Free memory is still 944.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.41 ms. Allocated memory is still 1.0 GB. Free memory was 944.9 MB in the beginning and 942.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 340.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 942.2 MB in the beginning and 1.2 GB in the end (delta: -239.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2792.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 957.6 MB in the end (delta: 224.2 MB). Peak memory consumption was 224.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.65 ms. Allocated memory is still 1.2 GB. Free memory is still 957.6 MB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 48 SDtfs, 38 SDslu, 12 SDs, 0 SdLazy, 29 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf98 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...