./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash df3ddc93bc6339292c9158119f1fdb949bb8842d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 02:16:35,825 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 02:16:35,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 02:16:35,839 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 02:16:35,839 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 02:16:35,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 02:16:35,842 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 02:16:35,844 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 02:16:35,846 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 02:16:35,847 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 02:16:35,848 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 02:16:35,848 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 02:16:35,849 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 02:16:35,850 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 02:16:35,852 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 02:16:35,852 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 02:16:35,854 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 02:16:35,856 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 02:16:35,858 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 02:16:35,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 02:16:35,861 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 02:16:35,863 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 02:16:35,865 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 02:16:35,866 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 02:16:35,866 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 02:16:35,867 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 02:16:35,868 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 02:16:35,870 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 02:16:35,870 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 02:16:35,872 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 02:16:35,872 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 02:16:35,873 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 02:16:35,873 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 02:16:35,873 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 02:16:35,875 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 02:16:35,876 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 02:16:35,876 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-14 02:16:35,899 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 02:16:35,899 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 02:16:35,900 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 02:16:35,901 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 02:16:35,901 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 02:16:35,901 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 02:16:35,901 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 02:16:35,901 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 02:16:35,902 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 02:16:35,902 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 02:16:35,902 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 02:16:35,902 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 02:16:35,902 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 02:16:35,902 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 02:16:35,903 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 02:16:35,903 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 02:16:35,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 02:16:35,903 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 02:16:35,903 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 02:16:35,903 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 02:16:35,904 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 02:16:35,904 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 02:16:35,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 02:16:35,904 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 02:16:35,904 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 02:16:35,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 02:16:35,905 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 02:16:35,905 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 02:16:35,906 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 02:16:35,906 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2019-01-14 02:16:35,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 02:16:35,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 02:16:35,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 02:16:35,960 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 02:16:35,961 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 02:16:35,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2019-01-14 02:16:36,025 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5f146be/6380a8cd45ea475b933b06aa9022f961/FLAG037db8e25 [2019-01-14 02:16:36,503 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 02:16:36,503 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2019-01-14 02:16:36,511 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5f146be/6380a8cd45ea475b933b06aa9022f961/FLAG037db8e25 [2019-01-14 02:16:36,845 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5f146be/6380a8cd45ea475b933b06aa9022f961 [2019-01-14 02:16:36,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 02:16:36,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 02:16:36,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 02:16:36,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 02:16:36,856 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 02:16:36,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:16:36" (1/1) ... [2019-01-14 02:16:36,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a3827e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:36, skipping insertion in model container [2019-01-14 02:16:36,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:16:36" (1/1) ... [2019-01-14 02:16:36,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 02:16:36,884 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 02:16:37,063 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:16:37,068 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 02:16:37,084 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:16:37,097 INFO L195 MainTranslator]: Completed translation [2019-01-14 02:16:37,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37 WrapperNode [2019-01-14 02:16:37,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 02:16:37,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 02:16:37,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 02:16:37,099 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 02:16:37,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 02:16:37,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 02:16:37,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 02:16:37,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 02:16:37,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (1/1) ... [2019-01-14 02:16:37,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 02:16:37,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 02:16:37,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 02:16:37,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 02:16:37,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (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 [2019-01-14 02:16:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 02:16:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 02:16:37,415 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 02:16:37,416 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 02:16:37,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:16:37 BoogieIcfgContainer [2019-01-14 02:16:37,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 02:16:37,418 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 02:16:37,419 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 02:16:37,423 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 02:16:37,424 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:16:37,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 02:16:36" (1/3) ... [2019-01-14 02:16:37,425 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58a3389d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:16:37, skipping insertion in model container [2019-01-14 02:16:37,426 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:16:37,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:37" (2/3) ... [2019-01-14 02:16:37,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58a3389d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:16:37, skipping insertion in model container [2019-01-14 02:16:37,426 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:16:37,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:16:37" (3/3) ... [2019-01-14 02:16:37,429 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2019-01-14 02:16:37,489 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 02:16:37,490 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 02:16:37,490 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 02:16:37,490 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 02:16:37,490 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 02:16:37,491 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 02:16:37,491 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 02:16:37,491 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 02:16:37,491 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 02:16:37,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-14 02:16:37,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:37,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:37,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:37,532 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:16:37,533 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:16:37,533 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 02:16:37,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-14 02:16:37,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:37,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:37,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:37,534 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:16:37,535 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:16:37,543 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L17-2true [2019-01-14 02:16:37,543 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0); 5#L17true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 3#L17-2true [2019-01-14 02:16:37,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:37,550 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-14 02:16:37,552 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:37,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:37,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:37,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:37,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:37,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-01-14 02:16:37,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:37,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:37,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:37,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:37,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:37,675 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-01-14 02:16:37,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:37,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:37,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:37,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:37,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:37,870 WARN L181 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2019-01-14 02:16:37,909 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:37,910 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:37,910 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:37,910 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:37,911 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:16:37,911 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:37,911 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:37,911 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:37,911 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-14 02:16:37,911 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:37,912 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:37,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:37,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:38,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:38,414 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:38,415 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 [2019-01-14 02:16:38,422 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:38,422 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:38,460 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:38,460 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe 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 [2019-01-14 02:16:38,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:38,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:38,488 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:38,488 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 [2019-01-14 02:16:38,494 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:38,494 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 [2019-01-14 02:16:38,532 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:38,532 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:38,557 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:16:38,559 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:38,559 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:38,559 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:38,560 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:38,560 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:16:38,560 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:38,560 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:38,561 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:38,561 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-14 02:16:38,561 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:38,561 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:38,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:38,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:38,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:38,846 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-01-14 02:16:38,912 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:38,916 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:16:38,918 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 [2019-01-14 02:16:38,920 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:38,920 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:38,920 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:38,921 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:38,926 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:38,926 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:38,936 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:38,938 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 [2019-01-14 02:16:38,939 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:38,939 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:38,939 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:38,939 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:38,943 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:38,943 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:38,953 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:38,954 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 [2019-01-14 02:16:38,954 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:38,955 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:38,956 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:38,956 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:38,956 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:38,958 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:16:38,958 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:38,966 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:16:38,971 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:16:38,971 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:16:38,974 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:16:38,974 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:16:38,975 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:16:38,975 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-01-14 02:16:38,976 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:16:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:39,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:39,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:39,100 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-14 02:16:39,101 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-01-14 02:16:39,157 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-01-14 02:16:39,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-01-14 02:16:39,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-01-14 02:16:39,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:39,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-01-14 02:16:39,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:39,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-01-14 02:16:39,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:39,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-01-14 02:16:39,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:39,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-01-14 02:16:39,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-01-14 02:16:39,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-01-14 02:16:39,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-01-14 02:16:39,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:16:39,176 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:16:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-01-14 02:16:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-01-14 02:16:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-01-14 02:16:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-01-14 02:16:39,205 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:16:39,206 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-01-14 02:16:39,206 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-14 02:16:39,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-01-14 02:16:39,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:39,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:39,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:39,207 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-01-14 02:16:39,207 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:16:39,208 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L17-2 assume !!(0 != main_~x~0); 67#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 63#L17-2 [2019-01-14 02:16:39,208 INFO L796 eck$LassoCheckResult]: Loop: 63#L17-2 assume !!(0 != main_~x~0); 64#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 63#L17-2 [2019-01-14 02:16:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-01-14 02:16:39,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:39,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:39,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:39,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:39,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:39,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:39,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-01-14 02:16:39,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:39,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:39,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:39,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:39,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-01-14 02:16:39,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:39,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:39,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:39,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:16:39,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:39,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 02:16:39,328 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-14 02:16:39,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:39,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:39,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 02:16:39,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-01-14 02:16:39,415 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:39,415 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:39,415 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:39,416 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:39,416 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:16:39,416 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:39,416 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:39,417 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:39,417 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-14 02:16:39,417 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:39,417 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:39,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:39,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:39,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:39,614 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:39,614 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:39,621 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:39,621 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:39,642 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:39,642 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:39,648 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:39,648 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:39,670 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:39,670 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:39,675 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:39,675 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:39,702 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:39,702 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:39,727 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:16:39,728 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:39,729 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:39,729 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:39,729 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:39,729 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:16:39,729 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:39,729 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:39,730 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:39,730 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-14 02:16:39,731 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:39,731 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:39,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:39,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:39,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:39,846 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:39,846 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:16:39,847 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 [2019-01-14 02:16:39,848 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:39,849 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:39,849 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:39,849 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:39,853 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:39,853 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:39,859 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:39,859 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 [2019-01-14 02:16:39,860 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:39,861 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:39,861 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:39,861 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:39,863 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:39,863 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:39,870 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:39,871 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 [2019-01-14 02:16:39,872 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:39,872 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:39,873 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:39,873 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:39,873 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:39,874 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:16:39,874 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:39,879 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:16:39,883 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:16:39,883 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:16:39,884 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:16:39,884 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:16:39,884 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:16:39,884 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-01-14 02:16:39,885 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:16:39,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:39,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:39,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:39,970 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-01-14 02:16:39,970 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-01-14 02:16:40,031 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-01-14 02:16:40,032 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 [2019-01-14 02:16:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-01-14 02:16:40,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-01-14 02:16:40,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:40,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-01-14 02:16:40,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:40,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-01-14 02:16:40,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:40,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-01-14 02:16:40,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:40,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-01-14 02:16:40,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-01-14 02:16:40,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-01-14 02:16:40,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-01-14 02:16:40,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:16:40,036 INFO L706 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-01-14 02:16:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-01-14 02:16:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-01-14 02:16:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-14 02:16:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-01-14 02:16:40,041 INFO L729 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-01-14 02:16:40,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 02:16:40,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 02:16:40,046 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2019-01-14 02:16:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 02:16:40,077 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-01-14 02:16:40,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 02:16:40,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-01-14 02:16:40,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:40,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2019-01-14 02:16:40,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-01-14 02:16:40,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-01-14 02:16:40,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2019-01-14 02:16:40,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:16:40,084 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-01-14 02:16:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2019-01-14 02:16:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-01-14 02:16:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-14 02:16:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-01-14 02:16:40,086 INFO L729 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-01-14 02:16:40,086 INFO L609 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-01-14 02:16:40,087 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-14 02:16:40,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-01-14 02:16:40,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:40,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:40,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:40,088 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-14 02:16:40,088 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:16:40,088 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 158#L17-2 assume !!(0 != main_~x~0); 154#L17 [2019-01-14 02:16:40,088 INFO L796 eck$LassoCheckResult]: Loop: 154#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 153#L17-2 assume !!(0 != main_~x~0); 154#L17 [2019-01-14 02:16:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:40,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-14 02:16:40,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:40,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:40,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:40,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:40,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-01-14 02:16:40,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:40,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:40,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:40,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:40,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:40,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:40,102 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2019-01-14 02:16:40,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:40,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:40,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:40,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:40,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:40,154 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:40,154 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:40,154 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:40,155 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:40,155 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:16:40,155 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:40,155 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:40,155 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:40,155 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-14 02:16:40,155 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:40,156 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:40,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:40,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:40,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:40,343 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-01-14 02:16:40,715 WARN L181 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2019-01-14 02:16:40,724 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:40,725 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:40,731 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:40,731 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:40,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:40,753 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:40,761 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:40,761 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:40,789 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:40,789 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:40,866 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:16:40,868 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:40,868 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:40,868 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:40,868 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:40,868 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:16:40,868 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:40,868 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:40,868 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:40,869 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-14 02:16:40,869 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:40,869 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:40,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:40,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:40,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,061 WARN L181 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2019-01-14 02:16:41,074 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:41,074 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:16:41,074 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 [2019-01-14 02:16:41,075 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:41,075 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:41,075 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:41,076 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:41,077 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:41,077 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:41,084 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:41,085 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 [2019-01-14 02:16:41,085 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:41,085 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:41,086 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:41,086 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2019-01-14 02:16:41,086 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:41,087 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-01-14 02:16:41,087 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:41,096 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:16:41,105 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:16:41,105 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-14 02:16:41,106 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:16:41,108 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:16:41,108 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:16:41,108 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-01-14 02:16:41,110 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:16:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:41,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:41,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:41,250 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 [2019-01-14 02:16:41,251 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-01-14 02:16:41,271 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2019-01-14 02:16:41,273 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 [2019-01-14 02:16:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-01-14 02:16:41,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-01-14 02:16:41,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:41,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-14 02:16:41,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:41,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2019-01-14 02:16:41,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:41,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-01-14 02:16:41,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:41,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2019-01-14 02:16:41,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-01-14 02:16:41,277 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-01-14 02:16:41,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-01-14 02:16:41,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:16:41,277 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-01-14 02:16:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-01-14 02:16:41,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-01-14 02:16:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-14 02:16:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-01-14 02:16:41,278 INFO L729 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-01-14 02:16:41,278 INFO L609 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-01-14 02:16:41,279 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-14 02:16:41,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-01-14 02:16:41,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-01-14 02:16:41,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:41,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:41,280 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-01-14 02:16:41,280 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-01-14 02:16:41,280 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 203#L17-2 assume !!(0 != main_~x~0); 204#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 205#L17-2 assume !!(0 != main_~x~0); 206#L17 [2019-01-14 02:16:41,280 INFO L796 eck$LassoCheckResult]: Loop: 206#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 208#L17-2 assume !!(0 != main_~x~0); 206#L17 [2019-01-14 02:16:41,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-01-14 02:16:41,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:41,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:41,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:16:41,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-01-14 02:16:41,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:41,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:41,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:16:41,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2019-01-14 02:16:41,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:41,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:41,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:16:41,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:41,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 02:16:41,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 02:16:41,426 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:41,426 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:41,426 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:41,426 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:41,426 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:16:41,427 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,427 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:41,427 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:41,427 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2019-01-14 02:16:41,427 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:41,427 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:41,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,600 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:41,601 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,605 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:41,605 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:41,625 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:41,625 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:41,630 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,657 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:41,657 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:41,749 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:16:41,751 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:41,751 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:41,751 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:41,752 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:41,752 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:16:41,752 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,752 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:41,752 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:41,752 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2019-01-14 02:16:41,752 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:41,752 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:41,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,904 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:41,904 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:16:41,906 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 [2019-01-14 02:16:41,906 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:41,907 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:41,907 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:41,907 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:41,909 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:41,910 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:41,914 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:41,914 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 [2019-01-14 02:16:41,916 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:41,916 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:41,916 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:41,916 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2019-01-14 02:16:41,917 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:41,917 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-01-14 02:16:41,917 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:41,925 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:16:41,934 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:16:41,934 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-14 02:16:41,935 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:16:41,935 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:16:41,935 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:16:41,935 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-01-14 02:16:41,935 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:16:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:41,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:41,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:42,012 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 [2019-01-14 02:16:42,012 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-01-14 02:16:42,022 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-01-14 02:16:42,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-14 02:16:42,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-14 02:16:42,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,024 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-14 02:16:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:42,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:42,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:42,082 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:16:42,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-01-14 02:16:42,088 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-01-14 02:16:42,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-14 02:16:42,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-14 02:16:42,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,090 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-14 02:16:42,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:42,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:42,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:42,129 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:16:42,130 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-01-14 02:16:42,143 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2019-01-14 02:16:42,146 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 [2019-01-14 02:16:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-01-14 02:16:42,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-01-14 02:16:42,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-01-14 02:16:42,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-01-14 02:16:42,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-01-14 02:16:42,151 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:16:42,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2019-01-14 02:16:42,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-14 02:16:42,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-14 02:16:42,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-14 02:16:42,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 02:16:42,152 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:42,152 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:42,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 02:16:42,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 02:16:42,152 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-01-14 02:16:42,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 02:16:42,153 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-01-14 02:16:42,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 02:16:42,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-01-14 02:16:42,153 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:16:42,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 02:16:42,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-14 02:16:42,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-14 02:16:42,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-14 02:16:42,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 02:16:42,154 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:42,154 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:42,154 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:42,154 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2019-01-14 02:16:42,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-14 02:16:42,154 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:16:42,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-14 02:16:42,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 02:16:42 BoogieIcfgContainer [2019-01-14 02:16:42,161 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 02:16:42,161 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 02:16:42,161 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 02:16:42,162 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 02:16:42,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:16:37" (3/4) ... [2019-01-14 02:16:42,165 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 02:16:42,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 02:16:42,166 INFO L168 Benchmark]: Toolchain (without parser) took 5316.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 947.3 MB in the beginning and 861.4 MB in the end (delta: 85.9 MB). Peak memory consumption was 231.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:42,167 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-01-14 02:16:42,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.25 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:42,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.97 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:16:42,169 INFO L168 Benchmark]: Boogie Preprocessor took 18.96 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:16:42,170 INFO L168 Benchmark]: RCFGBuilder took 263.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:42,174 INFO L168 Benchmark]: BuchiAutomizer took 4742.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 868.0 MB in the end (delta: 264.7 MB). Peak memory consumption was 264.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:42,174 INFO L168 Benchmark]: Witness Printer took 4.12 ms. Allocated memory is still 1.2 GB. Free memory was 868.0 MB in the beginning and 861.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:42,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 246.25 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 34.97 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.96 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 263.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4742.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 868.0 MB in the end (delta: 264.7 MB). Peak memory consumption was 264.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.12 ms. Allocated memory is still 1.2 GB. Free memory was 868.0 MB in the beginning and 861.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...