./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_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/BrockschmidtCookFuhs-CAV2013-Fig9a_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 b98f7fd40026cd249d1c292b5307435abc3c32a2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:15:01,670 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:01,672 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:01,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:01,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:01,686 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:01,687 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:01,689 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:01,691 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:01,692 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:01,693 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:01,693 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:01,694 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:01,695 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:01,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:01,697 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:01,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:01,700 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:01,703 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:01,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:01,706 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:01,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:01,710 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:01,710 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:01,710 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:01,711 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:01,712 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:01,713 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:01,714 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:01,715 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:01,715 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:01,716 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:01,716 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:01,717 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:01,718 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:01,718 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:01,719 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:01,749 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:01,749 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:01,750 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:01,752 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:01,752 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:01,753 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:01,753 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:01,753 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:01,753 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:01,753 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:01,754 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:01,754 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:01,754 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:01,754 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:01,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:01,754 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:01,757 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:01,757 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:01,758 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:01,758 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:01,758 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:01,758 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:01,758 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:01,759 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:01,759 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:01,759 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:01,759 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:01,759 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:01,762 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:01,763 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 -> b98f7fd40026cd249d1c292b5307435abc3c32a2 [2018-11-28 23:15:01,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:01,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:01,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:01,852 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:01,853 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:01,854 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-28 23:15:01,916 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea1b3e94/1ed75279be8d4061a5d310746c69893d/FLAG758a2e14e [2018-11-28 23:15:02,352 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:02,353 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-28 23:15:02,360 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea1b3e94/1ed75279be8d4061a5d310746c69893d/FLAG758a2e14e [2018-11-28 23:15:02,689 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea1b3e94/1ed75279be8d4061a5d310746c69893d [2018-11-28 23:15:02,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:02,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:02,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:02,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:02,698 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:02,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:02,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a57947c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02, skipping insertion in model container [2018-11-28 23:15:02,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:02,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:02,727 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:02,899 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:02,907 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:02,928 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:02,947 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:02,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02 WrapperNode [2018-11-28 23:15:02,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:02,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:02,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:02,950 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:02,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:02,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:02,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:02,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:02,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:02,997 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:03,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:03,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:03,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:03,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:03,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:03,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:03,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (1/1) ... [2018-11-28 23:15:03,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:03,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:03,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:03,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:03,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (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 23:15:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:03,448 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:03,449 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 23:15:03,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:03 BoogieIcfgContainer [2018-11-28 23:15:03,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:03,450 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:03,450 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:03,454 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:03,455 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:03,455 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:02" (1/3) ... [2018-11-28 23:15:03,456 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a92cb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:03, skipping insertion in model container [2018-11-28 23:15:03,456 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:03,456 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:02" (2/3) ... [2018-11-28 23:15:03,457 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a92cb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:03, skipping insertion in model container [2018-11-28 23:15:03,457 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:03,457 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:03" (3/3) ... [2018-11-28 23:15:03,459 INFO L375 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-28 23:15:03,525 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:03,526 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:03,526 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:03,527 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:03,527 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:03,527 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:03,527 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:03,527 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:03,527 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:03,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:15:03,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:03,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:03,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:03,614 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:03,614 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:03,614 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:03,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:15:03,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:03,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:03,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:03,616 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:03,616 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:03,631 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L20true assume main_~k~0 >= 1;main_~i~0 := 0; 11#L22-2true [2018-11-28 23:15:03,631 INFO L796 eck$LassoCheckResult]: Loop: 11#L22-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 5#L24-2true assume !(main_~j~0 <= main_~i~0); 3#L24-3true main_~i~0 := 1 + main_~i~0; 11#L22-2true [2018-11-28 23:15:03,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:03,645 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-28 23:15:03,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:03,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:03,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:03,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:03,754 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2018-11-28 23:15:03,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:03,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:03,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:03,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:03,771 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2018-11-28 23:15:03,771 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:03,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:03,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:03,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:03,873 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 23:15:03,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:15:03,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:15:04,000 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:04,001 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:04,001 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:04,001 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:04,002 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:04,002 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:04,002 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:04,002 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:04,002 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:04,003 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:04,003 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:04,027 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 23:15:04,058 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 23:15:04,073 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 23:15:04,214 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:04,215 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 23:15:04,227 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:04,228 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:04,260 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:04,260 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 23:15:04,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:04,268 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:04,293 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:04,293 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 23:15:04,299 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:04,299 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 23:15:04,341 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:04,341 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:04,467 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:04,469 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:04,469 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:04,469 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:04,470 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:04,470 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:04,470 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:04,470 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:04,471 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:04,471 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:04,471 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:04,471 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:04,473 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 23:15:04,478 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 23:15:04,514 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 23:15:04,750 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 23:15:05,032 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:05,037 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:05,038 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 23:15:05,040 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,040 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,040 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,041 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,046 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:05,046 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:05,053 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:05,053 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 23:15:05,054 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,054 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,055 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,055 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,057 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:05,058 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:05,067 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:05,068 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 23:15:05,068 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,069 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:05,069 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,069 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,070 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,071 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:05,071 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:05,082 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:05,097 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:15:05,098 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:15:05,100 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:05,101 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:05,101 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:05,101 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:15:05,103 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:05,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,355 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 23:15:05,370 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:15:05,371 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-11-28 23:15:05,493 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 9 states. [2018-11-28 23:15:05,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 33 transitions. [2018-11-28 23:15:05,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 23:15:05,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:05,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:15:05,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:05,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 23:15:05,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:05,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2018-11-28 23:15:05,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:05,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 14 states and 19 transitions. [2018-11-28 23:15:05,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 23:15:05,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-28 23:15:05,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2018-11-28 23:15:05,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:05,514 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-11-28 23:15:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2018-11-28 23:15:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-28 23:15:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 23:15:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2018-11-28 23:15:05,538 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2018-11-28 23:15:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:15:05,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:15:05,542 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand 4 states. [2018-11-28 23:15:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:05,590 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2018-11-28 23:15:05,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:15:05,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2018-11-28 23:15:05,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:05,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-28 23:15:05,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 23:15:05,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:15:05,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-28 23:15:05,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:05,594 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-28 23:15:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-28 23:15:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-28 23:15:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-11-28 23:15:05,596 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-28 23:15:05,596 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-28 23:15:05,596 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:05,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-11-28 23:15:05,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:05,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:05,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:05,597 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:05,598 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:15:05,598 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 122#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 120#L22-2 [2018-11-28 23:15:05,598 INFO L796 eck$LassoCheckResult]: Loop: 120#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 123#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 124#L24-2 assume !(main_~j~0 <= main_~i~0); 119#L24-3 main_~i~0 := 1 + main_~i~0; 120#L22-2 [2018-11-28 23:15:05,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:05,598 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-11-28 23:15:05,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:05,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:05,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:05,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:05,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:05,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:05,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1332592, now seen corresponding path program 1 times [2018-11-28 23:15:05,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:05,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:05,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:05,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:05,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:05,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:05,623 INFO L82 PathProgramCache]: Analyzing trace with hash 920235987, now seen corresponding path program 1 times [2018-11-28 23:15:05,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:05,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:05,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:05,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:05,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:05,757 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:05,757 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:05,757 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:05,757 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:05,758 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:05,758 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:05,758 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:05,758 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:05,759 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:05,759 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:05,759 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:05,761 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 23:15:05,780 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 23:15:05,788 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 23:15:06,168 WARN L180 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-28 23:15:06,280 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:06,280 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,285 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,285 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,306 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:06,306 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 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 23:15:06,312 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,312 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,332 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:06,332 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 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 23:15:06,339 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,339 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:15:06,370 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:06,370 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,544 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:06,548 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:06,548 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:06,548 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:06,548 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:06,548 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:06,548 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,549 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:06,549 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:06,549 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:06,549 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:06,549 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:06,552 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 23:15:06,572 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 23:15:06,577 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 23:15:06,738 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:06,738 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:06,739 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 23:15:06,740 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,740 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,740 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,740 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,743 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:06,743 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:06,760 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:06,760 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 23:15:06,764 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,764 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,764 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,764 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,769 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:06,769 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:06,781 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:06,782 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 23:15:06,783 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,783 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:06,783 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,783 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,783 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,787 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:06,787 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:06,803 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:06,817 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:06,819 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:06,819 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:06,819 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:06,820 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:06,820 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-28 23:15:06,821 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:06,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:06,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:06,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:15:06,891 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 23:15:06,891 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-28 23:15:06,932 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2018-11-28 23:15:06,933 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 23:15:06,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 23:15:06,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:15:06,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-28 23:15:06,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-28 23:15:06,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2018-11-28 23:15:06,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:06,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 12 transitions. [2018-11-28 23:15:06,937 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:15:06,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 23:15:06,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2018-11-28 23:15:06,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:06,938 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-11-28 23:15:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2018-11-28 23:15:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-11-28 23:15:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 23:15:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-11-28 23:15:06,940 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 23:15:06,940 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 23:15:06,940 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:15:06,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-11-28 23:15:06,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:06,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:06,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:06,943 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:15:06,943 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:06,943 INFO L794 eck$LassoCheckResult]: Stem: 175#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 176#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 180#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 177#L24-2 [2018-11-28 23:15:06,944 INFO L796 eck$LassoCheckResult]: Loop: 177#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 177#L24-2 [2018-11-28 23:15:06,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,944 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2018-11-28 23:15:06,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:06,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,956 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-11-28 23:15:06,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:06,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,964 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2018-11-28 23:15:06,964 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:06,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:07,063 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:07,063 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:07,064 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:07,064 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:07,064 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:07,064 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,065 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:07,065 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:07,065 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-28 23:15:07,065 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:07,065 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:07,067 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 23:15:07,070 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 23:15:07,075 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 23:15:07,091 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 23:15:07,095 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 23:15:07,099 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 23:15:07,113 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 23:15:07,116 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 23:15:07,262 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:07,262 INFO L412 LassoAnalysis]: Checking for nontermination... 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) [2018-11-28 23:15:07,273 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,273 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,277 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,277 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:15:07,299 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,299 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,302 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,302 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} 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 23:15:07,323 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,323 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,340 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,340 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,370 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,370 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,389 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,390 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:15:07,414 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,414 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,416 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,417 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} 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 23:15:07,439 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,439 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,459 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,459 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:15:07,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,486 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,486 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 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,502 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,502 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,530 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:07,530 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:08,243 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:08,246 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:08,246 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:08,246 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:08,246 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:08,246 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:08,246 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:08,246 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:08,247 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:08,247 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-28 23:15:08,247 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:08,247 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:08,250 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 23:15:08,269 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 23:15:08,273 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 23:15:08,276 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 23:15:08,280 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 23:15:08,301 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 23:15:08,323 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 23:15:08,326 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 23:15:08,506 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:15:08,643 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:08,643 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:08,644 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 23:15:08,644 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:08,647 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:08,647 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:08,647 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:08,651 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:08,651 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:08,670 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:08,682 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:08,682 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:15:08,683 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:08,685 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:08,686 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:08,686 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2018-11-28 23:15:08,703 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:08,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,769 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 23:15:08,769 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:08,770 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:15:08,810 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 18 transitions. Complement of second has 6 states. [2018-11-28 23:15:08,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-28 23:15:08,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-28 23:15:08,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-28 23:15:08,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:15:08,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2018-11-28 23:15:08,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:08,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 11 states and 14 transitions. [2018-11-28 23:15:08,815 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:15:08,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:15:08,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-28 23:15:08,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:08,815 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-28 23:15:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-28 23:15:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 8. [2018-11-28 23:15:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 23:15:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-11-28 23:15:08,817 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-28 23:15:08,817 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-28 23:15:08,817 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:15:08,817 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2018-11-28 23:15:08,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:08,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:08,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:08,818 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 23:15:08,818 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:08,818 INFO L794 eck$LassoCheckResult]: Stem: 240#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 241#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 245#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 243#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 244#L24-2 assume !(main_~j~0 <= main_~i~0); 238#L24-3 main_~i~0 := 1 + main_~i~0; 239#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 242#L24-2 [2018-11-28 23:15:08,818 INFO L796 eck$LassoCheckResult]: Loop: 242#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 242#L24-2 [2018-11-28 23:15:08,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1537455462, now seen corresponding path program 2 times [2018-11-28 23:15:08,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:08,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:08,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:08,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,830 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2018-11-28 23:15:08,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:08,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:08,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:08,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 3 times [2018-11-28 23:15:08,834 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:08,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:08,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:08,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,941 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:08,941 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:08,941 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:08,942 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:08,942 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:08,942 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:08,942 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:08,942 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:08,943 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-28 23:15:08,943 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:08,943 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:08,945 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 23:15:08,952 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 23:15:08,965 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 23:15:08,969 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 23:15:08,971 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 23:15:08,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:08,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:08,979 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 23:15:09,063 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:09,063 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:09,077 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:09,091 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:09,092 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,113 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:09,113 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,139 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:09,139 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:09,714 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:09,717 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:09,717 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:09,718 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:09,718 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:09,718 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:09,718 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,718 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:09,718 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:09,718 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-28 23:15:09,719 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:09,719 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:09,720 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 23:15:09,727 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 23:15:09,731 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 23:15:09,732 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 23:15:09,737 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 23:15:09,743 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 23:15:09,745 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 23:15:09,759 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 23:15:09,839 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:09,839 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:09,840 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 23:15:09,840 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:09,843 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:09,843 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:09,843 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:09,843 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:09,844 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:09,844 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:09,845 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:09,864 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 23:15:09,865 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:09,865 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:09,865 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:09,865 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:09,865 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:09,866 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:09,866 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:09,867 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:09,867 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 23:15:09,867 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:09,868 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:09,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:09,868 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:09,868 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:09,868 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:09,868 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:09,869 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:09,869 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 23:15:09,870 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:09,870 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:09,870 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:09,870 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:09,870 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:09,871 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:09,871 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:09,872 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:09,872 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 23:15:09,872 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:09,873 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:09,873 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:09,873 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:09,873 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:09,873 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:09,873 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:09,874 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:09,874 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 23:15:09,875 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:09,875 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:09,875 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:09,875 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:09,876 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:09,877 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:09,879 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:09,879 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 23:15:09,885 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:09,885 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:09,886 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:09,886 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:09,888 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:09,891 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:09,912 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:09,922 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:09,922 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:15:09,922 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:09,924 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:09,925 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:09,925 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2018-11-28 23:15:09,952 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:10,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,077 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 23:15:10,077 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:10,077 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 23:15:10,115 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-11-28 23:15:10,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-28 23:15:10,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:15:10,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,117 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:10,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,207 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 23:15:10,208 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:10,208 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 23:15:10,244 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-11-28 23:15:10,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-28 23:15:10,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:15:10,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,247 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:10,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,291 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 23:15:10,291 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:10,291 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 23:15:10,333 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 12 transitions. Complement of second has 5 states. [2018-11-28 23:15:10,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-28 23:15:10,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:15:10,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-28 23:15:10,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-28 23:15:10,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-28 23:15:10,338 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:10,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-28 23:15:10,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:10,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:10,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:10,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:10,339 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:10,339 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:10,339 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:10,339 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:15:10,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:10,339 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:10,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:10,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:10 BoogieIcfgContainer [2018-11-28 23:15:10,347 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:10,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:10,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:10,348 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:10,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:03" (3/4) ... [2018-11-28 23:15:10,353 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:10,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:10,354 INFO L168 Benchmark]: Toolchain (without parser) took 7661.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.8 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -216.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,355 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.80 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:10,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.07 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,356 INFO L168 Benchmark]: Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,357 INFO L168 Benchmark]: RCFGBuilder took 425.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:10,358 INFO L168 Benchmark]: BuchiAutomizer took 6897.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -40.6 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:10,359 INFO L168 Benchmark]: Witness Printer took 4.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,363 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.80 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 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 47.07 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 425.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6897.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -40.6 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function -1 * i + n and consists of 3 locations. One deterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 5.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 27 SDtfs, 34 SDslu, 9 SDs, 0 SdLazy, 63 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax159 hnf98 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf92 smp100 dnf100 smp100 tf103 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...