./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.13_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_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.13_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/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 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:08:56,509 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:08:56,511 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:08:56,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:08:56,522 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:08:56,523 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:08:56,524 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:08:56,525 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:08:56,526 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:08:56,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:08:56,531 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:08:56,531 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:08:56,532 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:08:56,534 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:08:56,539 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:08:56,540 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:08:56,541 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:08:56,542 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:08:56,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:08:56,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:08:56,545 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:08:56,545 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:08:56,550 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:08:56,552 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:08:56,552 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:08:56,552 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:08:56,553 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:08:56,554 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:08:56,554 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:08:56,555 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:08:56,555 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:08:56,555 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:08:56,555 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:08:56,555 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:08:56,556 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:08:56,556 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:08:56,557 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:08:56,576 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:08:56,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:08:56,578 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:08:56,578 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:08:56,579 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:08:56,579 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:08:56,579 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:08:56,580 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:08:56,580 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:08:56,580 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:08:56,580 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:08:56,581 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:08:56,581 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:08:56,581 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:08:56,581 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:08:56,581 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:08:56,581 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:08:56,581 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:08:56,582 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:08:56,582 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:08:56,582 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:08:56,582 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:08:56,582 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:08:56,582 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:08:56,582 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:08:56,583 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:08:56,583 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:08:56,583 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:08:56,583 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_b712579a-a430-400b-a8b4-b92289f5ea60/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 -> 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 [2018-10-27 06:08:56,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:08:56,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:08:56,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:08:56,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:08:56,651 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:08:56,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.13_true-termination_true-no-overflow.c [2018-10-27 06:08:56,698 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/data/687602db2/b8944fbf826b44f6985ffc8e7096d364/FLAG22db6b220 [2018-10-27 06:08:57,084 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:08:57,084 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/sv-benchmarks/c/termination-restricted-15/b.13_true-termination_true-no-overflow.c [2018-10-27 06:08:57,090 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/data/687602db2/b8944fbf826b44f6985ffc8e7096d364/FLAG22db6b220 [2018-10-27 06:08:57,104 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/data/687602db2/b8944fbf826b44f6985ffc8e7096d364 [2018-10-27 06:08:57,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:08:57,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:08:57,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:57,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:08:57,114 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:08:57,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57, skipping insertion in model container [2018-10-27 06:08:57,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:08:57,146 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:08:57,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:57,290 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:08:57,303 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:08:57,315 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:08:57,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57 WrapperNode [2018-10-27 06:08:57,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:08:57,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:57,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:08:57,317 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:08:57,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:08:57,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:08:57,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:08:57,346 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:08:57,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... [2018-10-27 06:08:57,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:08:57,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:08:57,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:08:57,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:08:57,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:08:57,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:08:57,751 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:08:57,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:57 BoogieIcfgContainer [2018-10-27 06:08:57,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:08:57,752 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:08:57,753 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:08:57,756 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:08:57,756 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:57,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:08:57" (1/3) ... [2018-10-27 06:08:57,757 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@810608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:57, skipping insertion in model container [2018-10-27 06:08:57,758 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:57,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:57" (2/3) ... [2018-10-27 06:08:57,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@810608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:08:57, skipping insertion in model container [2018-10-27 06:08:57,759 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:08:57,759 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:57" (3/3) ... [2018-10-27 06:08:57,760 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.13_true-termination_true-no-overflow.c [2018-10-27 06:08:57,843 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:08:57,844 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:08:57,844 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:08:57,844 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:08:57,844 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:08:57,844 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:08:57,844 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:08:57,845 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:08:57,845 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:08:57,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-10-27 06:08:57,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:08:57,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:57,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:57,903 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:57,903 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:08:57,903 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:08:57,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-10-27 06:08:57,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:08:57,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:57,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:57,905 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:08:57,905 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:08:57,911 INFO L793 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 11#L16-2true [2018-10-27 06:08:57,912 INFO L795 eck$LassoCheckResult]: Loop: 11#L16-2true assume true; 6#L12-1true assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 9#L13true assume main_~x~0 > main_~z~0;main_~x~0 := main_~x~0 - 1; 11#L16-2true [2018-10-27 06:08:57,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:57,916 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:08:57,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:57,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:57,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:57,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:57,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:58,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:58,013 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 1 times [2018-10-27 06:08:58,013 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:58,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:58,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:58,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:58,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:58,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:58,029 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-10-27 06:08:58,030 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:58,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:58,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:58,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:58,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:58,117 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:58,118 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:58,118 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:58,118 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:58,118 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:58,118 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:58,119 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:58,119 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:58,119 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:08:58,119 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:58,120 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:58,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:58,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:58,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:58,245 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:58,245 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:58,250 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:58,250 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:58,269 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:58,269 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_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:58,273 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:58,273 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:58,290 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:58,290 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_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:58,293 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:58,293 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:58,312 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:58,312 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:58,533 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:58,534 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:58,534 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:58,534 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:58,534 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:58,534 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:58,534 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:58,535 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:58,535 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:58,535 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:08:58,535 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:58,535 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:58,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:58,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:58,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:58,826 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:58,829 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:58,830 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:58,831 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:58,832 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:58,832 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:58,832 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:58,836 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:58,836 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:58,844 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:58,844 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:58,845 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:58,845 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:58,845 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:58,845 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:58,847 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:58,847 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:58,856 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:58,856 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:58,857 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:58,857 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:58,857 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:58,857 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:58,858 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:58,858 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:58,859 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:58,863 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:58,872 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:08:58,872 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:58,874 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:58,874 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:58,874 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:58,879 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-10-27 06:08:58,880 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:08:58,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:58,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:08:58,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:08:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:08:58,988 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 06:08:58,990 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2018-10-27 06:08:59,049 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 25 states and 33 transitions. Complement of second has 5 states. [2018-10-27 06:08:59,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:08:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:08:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-10-27 06:08:59,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2018-10-27 06:08:59,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:59,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:08:59,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:59,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2018-10-27 06:08:59,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:08:59,055 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2018-10-27 06:08:59,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:08:59,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 13 states and 18 transitions. [2018-10-27 06:08:59,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:08:59,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:08:59,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2018-10-27 06:08:59,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:08:59,062 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2018-10-27 06:08:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2018-10-27 06:08:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-10-27 06:08:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 06:08:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-10-27 06:08:59,081 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-10-27 06:08:59,081 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-10-27 06:08:59,081 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:08:59,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2018-10-27 06:08:59,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:08:59,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:08:59,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:08:59,082 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:08:59,082 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:08:59,082 INFO L793 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 73#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 74#L16-2 assume true; 80#L12-1 [2018-10-27 06:08:59,082 INFO L795 eck$LassoCheckResult]: Loop: 80#L12-1 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 81#L13 assume !(main_~x~0 > main_~z~0); 76#L16 assume main_~y~0 > main_~z~0;main_~y~0 := main_~y~0 - 1; 77#L16-2 assume true; 80#L12-1 [2018-10-27 06:08:59,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:59,083 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-10-27 06:08:59,083 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:59,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:59,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:59,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:59,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:59,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:59,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1297976, now seen corresponding path program 1 times [2018-10-27 06:08:59,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:59,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:59,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:59,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:59,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:59,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:08:59,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1805984218, now seen corresponding path program 1 times [2018-10-27 06:08:59,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:08:59,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:08:59,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:59,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:08:59,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:08:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:08:59,211 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:59,211 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:59,211 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:59,212 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:59,212 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:08:59,212 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:59,212 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:59,212 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:59,212 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:08:59,212 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:59,212 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:59,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:59,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:59,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:59,320 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:59,320 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/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 06:08:59,328 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:59,328 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:59,344 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:59,344 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_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:59,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:59,347 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:59,363 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:08:59,363 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_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:59,368 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:08:59,368 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b712579a-a430-400b-a8b4-b92289f5ea60/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:59,389 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:08:59,389 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:08:59,724 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:08:59,726 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:08:59,726 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:08:59,727 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:08:59,727 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:08:59,727 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:08:59,727 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:08:59,727 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:08:59,727 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:08:59,727 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.13_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:08:59,727 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:08:59,727 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:08:59,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:59,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:59,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:08:59,833 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:08:59,833 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:08:59,833 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:59,834 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:59,835 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:59,835 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:59,835 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:59,838 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:59,838 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:59,842 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:59,843 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:59,843 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:59,843 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:59,844 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:59,844 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:59,845 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:08:59,845 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:08:59,852 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:08:59,852 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:08:59,853 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:08:59,853 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:08:59,853 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:08:59,853 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:08:59,853 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:08:59,855 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:08:59,856 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:08:59,860 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:08:59,864 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:08:59,865 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:08:59,865 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:08:59,865 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:08:59,865 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:08:59,865 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-10-27 06:08:59,866 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:00,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:00,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:00,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:00,232 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 06:09:00,233 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 06:09:00,233 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-10-27 06:09:00,263 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 28 states and 39 transitions. Complement of second has 4 states. [2018-10-27 06:09:00,264 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 06:09:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-10-27 06:09:00,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2018-10-27 06:09:00,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:00,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:09:00,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:00,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2018-10-27 06:09:00,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:00,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2018-10-27 06:09:00,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:09:00,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 39 transitions. [2018-10-27 06:09:00,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-10-27 06:09:00,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:09:00,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 39 transitions. [2018-10-27 06:09:00,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:00,269 INFO L705 BuchiCegarLoop]: Abstraction has 28 states and 39 transitions. [2018-10-27 06:09:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 39 transitions. [2018-10-27 06:09:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-10-27 06:09:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-27 06:09:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2018-10-27 06:09:00,271 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-27 06:09:00,271 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2018-10-27 06:09:00,271 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:09:00,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 37 transitions. [2018-10-27 06:09:00,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:09:00,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:00,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:00,272 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:09:00,273 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:09:00,273 INFO L793 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 154#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 155#L16-2 assume true; 168#L12-1 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 164#L13 [2018-10-27 06:09:00,273 INFO L795 eck$LassoCheckResult]: Loop: 164#L13 assume !(main_~x~0 > main_~z~0); 156#L16 assume !(main_~y~0 > main_~z~0); 157#L16-2 assume true; 166#L12-1 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 164#L13 [2018-10-27 06:09:00,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:00,273 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-10-27 06:09:00,273 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:00,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:00,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:00,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:00,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:00,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:00,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1451308, now seen corresponding path program 1 times [2018-10-27 06:09:00,278 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:00,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:00,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:00,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:00,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:00,311 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 06:09:00,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:00,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:09:00,313 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:00,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:09:00,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:09:00,316 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-10-27 06:09:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:00,332 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2018-10-27 06:09:00,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 06:09:00,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 44 transitions. [2018-10-27 06:09:00,334 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:00,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 0 states and 0 transitions. [2018-10-27 06:09:00,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:09:00,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:09:00,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:09:00,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:09:00,334 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:00,335 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:00,335 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:00,335 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:09:00,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:09:00,335 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:00,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:09:00,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:09:00 BoogieIcfgContainer [2018-10-27 06:09:00,341 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:09:00,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:09:00,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:09:00,341 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:09:00,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:57" (3/4) ... [2018-10-27 06:09:00,344 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:09:00,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:09:00,345 INFO L168 Benchmark]: Toolchain (without parser) took 3236.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 953.1 MB in the beginning and 999.1 MB in the end (delta: -46.0 MB). Peak memory consumption was 104.0 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:00,347 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:00,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.77 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:00,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:00,348 INFO L168 Benchmark]: Boogie Preprocessor took 17.46 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:00,348 INFO L168 Benchmark]: RCFGBuilder took 388.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:00,350 INFO L168 Benchmark]: BuchiAutomizer took 2588.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.1 MB in the end (delta: 138.5 MB). Peak memory consumption was 138.5 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:00,350 INFO L168 Benchmark]: Witness Printer took 3.49 ms. Allocated memory is still 1.2 GB. Free memory is still 999.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:00,354 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.77 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.46 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 388.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2588.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 999.1 MB in the end (delta: 138.5 MB). Peak memory consumption was 138.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.49 ms. Allocated memory is still 1.2 GB. Free memory is still 999.1 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 26 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 18 SDtfs, 21 SDslu, 8 SDs, 0 SdLazy, 31 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...