./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 df3ddc93bc6339292c9158119f1fdb949bb8842d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:15:09,597 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:09,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:09,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:09,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:09,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:09,625 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:09,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:09,630 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:09,632 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:09,633 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:09,633 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:09,635 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:09,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:09,639 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:09,640 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:09,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:09,650 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:09,652 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:09,655 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:09,656 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:09,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:09,661 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:09,663 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:09,663 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:09,664 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:09,665 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:09,669 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:09,669 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:09,670 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:09,673 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:09,673 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:09,675 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:09,675 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:09,676 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:09,677 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:09,677 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:09,705 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:09,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:09,707 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:09,707 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:09,707 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:09,710 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:09,711 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:09,711 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:09,711 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:09,711 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:09,711 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:09,711 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:09,712 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:09,713 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:09,713 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:09,713 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:09,713 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:09,713 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:09,714 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:09,714 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:09,714 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:09,714 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:09,714 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:09,714 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:09,715 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:09,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:09,716 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:09,716 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:09,717 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:09,717 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2018-11-28 23:15:09,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:09,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:09,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:09,797 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:09,799 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:09,800 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2018-11-28 23:15:09,864 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799832c40/036927ce09fa4eccb013e74f725f8ee3/FLAGd421f6346 [2018-11-28 23:15:10,266 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:10,267 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2018-11-28 23:15:10,274 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799832c40/036927ce09fa4eccb013e74f725f8ee3/FLAGd421f6346 [2018-11-28 23:15:10,647 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799832c40/036927ce09fa4eccb013e74f725f8ee3 [2018-11-28 23:15:10,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:10,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:10,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:10,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:10,657 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:10,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:10,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4d28c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10, skipping insertion in model container [2018-11-28 23:15:10,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:10,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:10,690 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:10,922 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:10,928 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:10,948 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:10,965 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:10,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10 WrapperNode [2018-11-28 23:15:10,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:10,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:10,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:10,967 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:10,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:10,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:11,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:11,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:11,009 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:11,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... [2018-11-28 23:15:11,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:11,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:11,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:11,034 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:11,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:11,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:11,329 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:11,329 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:15:11,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:11 BoogieIcfgContainer [2018-11-28 23:15:11,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:11,330 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:11,331 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:11,334 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:11,335 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:11,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:10" (1/3) ... [2018-11-28 23:15:11,337 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4136e227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:11, skipping insertion in model container [2018-11-28 23:15:11,337 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:11,337 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:10" (2/3) ... [2018-11-28 23:15:11,337 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4136e227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:11, skipping insertion in model container [2018-11-28 23:15:11,337 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:11,338 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:11" (3/3) ... [2018-11-28 23:15:11,341 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2018-11-28 23:15:11,417 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:11,417 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:11,417 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:11,418 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:11,418 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:11,418 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:11,418 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:11,418 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:11,418 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:11,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 23:15:11,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:11,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:11,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:11,459 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:11,459 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:11,459 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:11,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 23:15:11,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:11,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:11,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:11,461 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:11,461 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:11,468 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L17-2true [2018-11-28 23:15:11,469 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0); 5#L17true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 3#L17-2true [2018-11-28 23:15:11,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:15:11,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:11,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:11,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:11,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:11,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:11,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-28 23:15:11,571 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:11,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:11,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:11,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:11,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:11,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:11,585 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 23:15:11,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:11,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:11,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:11,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:11,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:11,761 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-11-28 23:15:11,817 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:11,818 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:11,818 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:11,818 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:11,818 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:11,819 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:11,819 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:11,819 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:11,819 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:11,819 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:11,819 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:11,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:11,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:11,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:12,006 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:12,007 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:12,013 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:12,013 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:12,038 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:12,039 INFO L448 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:12,044 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:12,044 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:12,065 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:12,065 INFO L448 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:12,072 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:12,072 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:12,101 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:12,102 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:12,129 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:12,130 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:12,131 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:12,131 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:12,131 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:12,131 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:12,131 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:12,131 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:12,131 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:12,131 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:12,132 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:12,132 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:12,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:12,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:12,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:12,524 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:12,529 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:12,531 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:12,532 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:12,533 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:12,533 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:12,533 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:12,538 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:12,539 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:12,549 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:12,549 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:12,550 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:12,550 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:12,551 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:12,551 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:12,554 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:12,554 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:12,564 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:12,565 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:12,566 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:12,566 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:12,567 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:12,567 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:12,567 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:12,568 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:12,568 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:12,575 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:12,579 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:12,580 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:12,582 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:12,582 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:12,582 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:12,583 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:12,585 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:12,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:12,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:12,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:12,755 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 [2018-11-28 23:15:12,757 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-11-28 23:15:12,809 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2018-11-28 23:15:12,809 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 [2018-11-28 23:15:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:15:12,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 23:15:12,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:12,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:15:12,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:12,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 23:15:12,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:12,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-28 23:15:12,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:12,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-28 23:15:12,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:15:12,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 23:15:12,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 23:15:12,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:12,828 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:15:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 23:15:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-28 23:15:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 23:15:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 23:15:12,857 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:15:12,858 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:15:12,858 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:12,858 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-28 23:15:12,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:12,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:12,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:12,859 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:15:12,859 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:12,860 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L17-2 assume !!(0 != main_~x~0); 67#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 63#L17-2 [2018-11-28 23:15:12,860 INFO L796 eck$LassoCheckResult]: Loop: 63#L17-2 assume !!(0 != main_~x~0); 64#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 63#L17-2 [2018-11-28 23:15:12,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:12,860 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-28 23:15:12,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:12,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:12,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:12,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:12,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:12,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:12,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-11-28 23:15:12,875 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:12,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:12,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:12,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:12,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:12,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-11-28 23:15:12,895 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:12,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:12,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:12,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:12,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:12,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:15:12,969 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:15:12,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:12,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:13,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:15:13,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 23:15:13,105 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:13,105 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:13,105 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:13,105 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:13,105 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:13,106 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:13,106 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:13,106 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:13,106 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:13,106 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:13,107 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:13,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,289 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:13,289 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:13,293 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:13,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:13,314 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:13,315 INFO L448 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:13,321 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:13,321 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:13,342 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:13,342 INFO L448 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:13,350 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:13,351 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:13,375 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:13,376 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:13,399 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:13,401 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:13,401 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:13,401 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:13,401 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:13,402 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:13,402 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:13,402 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:13,402 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:13,402 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:13,402 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:13,403 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:13,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,514 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:13,515 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:13,515 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:13,517 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:13,517 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:13,517 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:13,517 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:13,521 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:13,522 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:13,527 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:13,527 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:13,528 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:13,528 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:13,528 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:13,528 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:13,532 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:13,532 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:13,539 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:13,540 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:13,540 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:13,540 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:13,542 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:13,542 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:13,542 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:13,543 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:13,543 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:13,548 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:13,553 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:13,553 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:13,553 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:13,553 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:13,554 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:13,555 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:13,555 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:13,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:13,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:13,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:13,644 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 [2018-11-28 23:15:13,645 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:15:13,683 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2018-11-28 23:15:13,684 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 [2018-11-28 23:15:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 23:15:13,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:15:13,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:13,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 23:15:13,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:13,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-28 23:15:13,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:13,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-11-28 23:15:13,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:13,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-11-28 23:15:13,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 23:15:13,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:15:13,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-11-28 23:15:13,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:13,689 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 23:15:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-11-28 23:15:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-28 23:15:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-28 23:15:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-11-28 23:15:13,692 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 23:15:13,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:15:13,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:15:13,696 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2018-11-28 23:15:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:13,744 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2018-11-28 23:15:13,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:15:13,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-28 23:15:13,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:13,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2018-11-28 23:15:13,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 23:15:13,747 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:15:13,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2018-11-28 23:15:13,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:13,749 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-28 23:15:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2018-11-28 23:15:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-11-28 23:15:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-28 23:15:13,751 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:13,751 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:13,751 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:15:13,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-28 23:15:13,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:13,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:13,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:13,752 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:13,752 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:13,752 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 158#L17-2 assume !!(0 != main_~x~0); 154#L17 [2018-11-28 23:15:13,752 INFO L796 eck$LassoCheckResult]: Loop: 154#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 153#L17-2 assume !!(0 != main_~x~0); 154#L17 [2018-11-28 23:15:13,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:13,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:15:13,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:13,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:13,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:13,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:13,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:13,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-11-28 23:15:13,761 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:13,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:13,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:13,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:13,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:13,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2018-11-28 23:15:13,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:13,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:13,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:13,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:13,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:13,817 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:13,817 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:13,817 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:13,817 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:13,818 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:13,818 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:13,818 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:13,818 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:13,818 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:13,818 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:13,818 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:13,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:13,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:14,021 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:15:14,385 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2018-11-28 23:15:14,391 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:14,392 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:15:14,396 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:14,396 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:14,416 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:14,416 INFO L448 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:15:14,422 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:14,422 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:15:14,451 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:14,452 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:14,534 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:14,536 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:14,536 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:14,536 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:14,536 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:14,537 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:14,537 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:14,537 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:14,537 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:14,537 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:14,537 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:14,537 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:14,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:14,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:14,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:14,739 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2018-11-28 23:15:14,743 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:14,743 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:14,744 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:14,745 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:14,745 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:14,745 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:14,746 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:14,747 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:14,748 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:14,752 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:14,753 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:14,754 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:14,754 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:14,754 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:14,754 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:15:14,754 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:14,755 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:15:14,755 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:14,762 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:14,768 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:14,768 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:15:14,768 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:14,768 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:14,769 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:14,769 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 23:15:14,769 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:14,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:14,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:14,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:14,917 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 [2018-11-28 23:15:14,917 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 23:15:14,961 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2018-11-28 23:15:14,962 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 [2018-11-28 23:15:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:15:14,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:15:14,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:14,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:14,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:14,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:15:14,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:14,964 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-11-28 23:15:14,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:14,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-28 23:15:14,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:15:14,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:15:14,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-28 23:15:14,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:14,966 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-28 23:15:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-28 23:15:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-28 23:15:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-11-28 23:15:14,968 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-28 23:15:14,968 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-28 23:15:14,968 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:15:14,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-11-28 23:15:14,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:14,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:14,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:14,969 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-11-28 23:15:14,969 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:14,970 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 203#L17-2 assume !!(0 != main_~x~0); 204#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 205#L17-2 assume !!(0 != main_~x~0); 206#L17 [2018-11-28 23:15:14,970 INFO L796 eck$LassoCheckResult]: Loop: 206#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 208#L17-2 assume !!(0 != main_~x~0); 206#L17 [2018-11-28 23:15:14,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:14,971 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-11-28 23:15:14,971 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:14,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:14,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:14,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:14,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:14,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:14,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-11-28 23:15:14,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:14,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:14,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:14,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:14,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:14,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:14,986 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2018-11-28 23:15:14,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:14,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:14,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:14,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:14,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:15,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:15:15,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:15:15,089 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:15,089 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:15,089 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:15,089 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:15,090 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:15,090 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:15,090 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:15,090 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:15,090 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:15:15,093 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:15,093 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:15,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:15,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:15,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:15,262 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:15,262 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:15,267 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:15,267 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:15,287 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:15,287 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:15,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:15,295 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:15,328 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:15,328 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:15,421 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:15,423 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:15,423 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:15,423 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:15,423 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:15,424 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:15,424 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:15,424 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:15,424 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:15,424 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:15:15,424 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:15,424 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:15,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:15,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:15,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:15,564 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:15,564 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:15,566 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:15,566 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:15,566 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:15,567 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:15,567 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:15,570 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:15,571 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:15,575 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:15,575 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:15,576 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:15,576 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:15,576 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:15,576 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:15:15,576 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:15,577 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:15:15,577 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:15,585 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:15,590 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:15,590 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:15:15,591 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:15,591 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:15,591 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:15,591 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 23:15:15,591 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:15,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:15,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:15,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:15,656 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 [2018-11-28 23:15:15,656 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:15:15,665 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-11-28 23:15:15,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-11-28 23:15:15,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:15,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:15,667 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:15,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:15,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:15,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:15,746 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:15,746 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:15:15,754 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-11-28 23:15:15,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-11-28 23:15:15,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:15,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:15,757 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:15,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:15,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:15,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:15,819 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 2 loop predicates [2018-11-28 23:15:15,819 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:15:15,831 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2018-11-28 23:15:15,834 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 [2018-11-28 23:15:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-28 23:15:15,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:15,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:15,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:15:15,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:15,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 23:15:15,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:15,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2018-11-28 23:15:15,837 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:15,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2018-11-28 23:15:15,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:15,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:15,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:15,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:15,838 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:15,839 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:15,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:15:15,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:15:15,839 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-11-28 23:15:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:15,839 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 23:15:15,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:15:15,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 23:15:15,840 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:15,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:15:15,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:15,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:15,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:15,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:15,841 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:15,841 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:15,841 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:15,841 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:15:15,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:15,841 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:15,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:15,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:15 BoogieIcfgContainer [2018-11-28 23:15:15,849 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:15,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:15,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:15,850 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:15,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:11" (3/4) ... [2018-11-28 23:15:15,854 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:15,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:15,855 INFO L168 Benchmark]: Toolchain (without parser) took 5203.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 952.7 MB in the beginning and 838.3 MB in the end (delta: 114.4 MB). Peak memory consumption was 258.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:15,856 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:15,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.15 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:15,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.27 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:15,858 INFO L168 Benchmark]: Boogie Preprocessor took 24.81 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:15,859 INFO L168 Benchmark]: RCFGBuilder took 295.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:15,860 INFO L168 Benchmark]: BuchiAutomizer took 4518.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 838.3 MB in the end (delta: 287.4 MB). Peak memory consumption was 287.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:15,861 INFO L168 Benchmark]: Witness Printer took 4.64 ms. Allocated memory is still 1.2 GB. Free memory is still 838.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:15,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.15 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 41.27 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.81 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 295.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4518.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 838.3 MB in the end (delta: 287.4 MB). Peak memory consumption was 287.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.64 ms. Allocated memory is still 1.2 GB. Free memory is still 838.3 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...