./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash dd82318ec795f8c5ba1d6bd1e94de4995b910941 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-29 00:01:55,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-29 00:01:55,880 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-29 00:01:55,892 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-29 00:01:55,893 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-29 00:01:55,894 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-29 00:01:55,895 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-29 00:01:55,898 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-29 00:01:55,900 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-29 00:01:55,901 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-29 00:01:55,902 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-29 00:01:55,902 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-29 00:01:55,903 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-29 00:01:55,904 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-29 00:01:55,906 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-29 00:01:55,907 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-29 00:01:55,907 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-29 00:01:55,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-29 00:01:55,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-29 00:01:55,914 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-29 00:01:55,915 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-29 00:01:55,917 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-29 00:01:55,920 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-29 00:01:55,920 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-29 00:01:55,920 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-29 00:01:55,921 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-29 00:01:55,923 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-29 00:01:55,924 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-29 00:01:55,925 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-29 00:01:55,926 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-29 00:01:55,926 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-29 00:01:55,927 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-29 00:01:55,928 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-29 00:01:55,928 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-29 00:01:55,929 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-29 00:01:55,930 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-29 00:01:55,931 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-29 00:01:55,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-29 00:01:55,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-29 00:01:55,950 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-29 00:01:55,950 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-29 00:01:55,950 INFO L133 SettingsManager]: * Use SBE=true [2018-11-29 00:01:55,951 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-29 00:01:55,951 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-29 00:01:55,951 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-29 00:01:55,951 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-29 00:01:55,952 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-29 00:01:55,952 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-29 00:01:55,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-29 00:01:55,952 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-29 00:01:55,954 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-29 00:01:55,954 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-29 00:01:55,954 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-29 00:01:55,954 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-29 00:01:55,954 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-29 00:01:55,955 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-29 00:01:55,955 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-29 00:01:55,955 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-29 00:01:55,955 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-29 00:01:55,955 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-29 00:01:55,957 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-29 00:01:55,957 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-29 00:01:55,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-29 00:01:55,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-29 00:01:55,957 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-29 00:01:55,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-29 00:01:55,958 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-29 00:01:55,958 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-29 00:01:55,960 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-29 00:01:55,960 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd82318ec795f8c5ba1d6bd1e94de4995b910941 [2018-11-29 00:01:56,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-29 00:01:56,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-29 00:01:56,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-29 00:01:56,049 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-29 00:01:56,050 INFO L276 PluginConnector]: CDTParser initialized [2018-11-29 00:01:56,051 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c [2018-11-29 00:01:56,110 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d2e4254/321df43f6d5a43529d793f61616fe9e8/FLAG74a0232af [2018-11-29 00:01:56,550 INFO L307 CDTParser]: Found 1 translation units. [2018-11-29 00:01:56,551 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c [2018-11-29 00:01:56,557 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d2e4254/321df43f6d5a43529d793f61616fe9e8/FLAG74a0232af [2018-11-29 00:01:56,928 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d2e4254/321df43f6d5a43529d793f61616fe9e8 [2018-11-29 00:01:56,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-29 00:01:56,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-29 00:01:56,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-29 00:01:56,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-29 00:01:56,939 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-29 00:01:56,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:01:56" (1/1) ... [2018-11-29 00:01:56,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4187cae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:56, skipping insertion in model container [2018-11-29 00:01:56,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:01:56" (1/1) ... [2018-11-29 00:01:56,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-29 00:01:56,970 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-29 00:01:57,179 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-29 00:01:57,185 INFO L191 MainTranslator]: Completed pre-run [2018-11-29 00:01:57,210 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-29 00:01:57,228 INFO L195 MainTranslator]: Completed translation [2018-11-29 00:01:57,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57 WrapperNode [2018-11-29 00:01:57,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-29 00:01:57,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-29 00:01:57,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-29 00:01:57,230 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-29 00:01:57,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-29 00:01:57,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-29 00:01:57,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-29 00:01:57,272 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-29 00:01:57,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... [2018-11-29 00:01:57,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-29 00:01:57,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-29 00:01:57,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-29 00:01:57,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-29 00:01:57,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-29 00:01:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-29 00:01:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2018-11-29 00:01:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2018-11-29 00:01:57,807 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-29 00:01:57,808 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-29 00:01:57,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:01:57 BoogieIcfgContainer [2018-11-29 00:01:57,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-29 00:01:57,811 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-29 00:01:57,812 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-29 00:01:57,817 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-29 00:01:57,821 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-29 00:01:57,821 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 12:01:56" (1/3) ... [2018-11-29 00:01:57,823 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@213c0325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 12:01:57, skipping insertion in model container [2018-11-29 00:01:57,823 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-29 00:01:57,823 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:01:57" (2/3) ... [2018-11-29 00:01:57,824 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@213c0325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 12:01:57, skipping insertion in model container [2018-11-29 00:01:57,824 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-29 00:01:57,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:01:57" (3/3) ... [2018-11-29 00:01:57,827 INFO L375 chiAutomizerObserver]: Analyzing ICFG Ackermann02_false-unreach-call_true-no-overflow_true-termination.c [2018-11-29 00:01:57,917 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-29 00:01:57,917 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-29 00:01:57,918 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-29 00:01:57,918 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-29 00:01:57,918 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-29 00:01:57,918 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-29 00:01:57,918 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-29 00:01:57,918 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-29 00:01:57,921 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-29 00:01:57,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-29 00:01:57,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-29 00:01:57,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:01:57,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:01:57,999 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-29 00:01:58,000 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:01:58,000 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-29 00:01:58,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-29 00:01:58,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-29 00:01:58,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:01:58,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:01:58,005 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-29 00:01:58,005 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:01:58,016 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L27true assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 16#L33true assume !(main_~n~0 < 0 || main_~n~0 > 23); 6#L39true call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 11#ackermannENTRYtrue [2018-11-29 00:01:58,016 INFO L796 eck$LassoCheckResult]: Loop: 11#ackermannENTRYtrue ~m := #in~m;~n := #in~n; 18#L15true assume !(0 == ~m); 12#L18true assume !(0 == ~n); 5#L21true call #t~ret1 := ackermann(~m, ~n - 1);< 11#ackermannENTRYtrue [2018-11-29 00:01:58,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:01:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash 959458, now seen corresponding path program 1 times [2018-11-29 00:01:58,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:01:58,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:01:58,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:01:58,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:01:58,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:01:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:01:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:01:58,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:01:58,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1666510, now seen corresponding path program 1 times [2018-11-29 00:01:58,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:01:58,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:01:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:01:58,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:01:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:01:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:01:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:01:58,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:01:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1317091631, now seen corresponding path program 1 times [2018-11-29 00:01:58,190 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:01:58,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:01:58,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:01:58,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:01:58,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:01:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:01:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:01:58,436 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:01:58,438 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:01:58,438 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:01:58,438 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:01:58,438 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:01:58,438 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:58,439 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:01:58,439 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:01:58,439 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-29 00:01:58,439 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:01:58,439 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:01:58,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:58,988 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:01:58,988 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:58,994 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:58,994 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,004 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,005 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,026 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:59,026 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,033 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,033 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,054 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:59,054 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,059 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,059 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,081 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:59,081 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,085 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,085 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,127 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:59,127 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,131 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,131 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,154 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:59,154 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,156 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,156 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,179 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:59,180 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,205 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:01:59,205 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,232 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,232 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=-1} Honda state: {ackermann_#in~n=-1} Generalized eigenvectors: [{ackermann_#in~n=0}, {ackermann_#in~n=0}, {ackermann_#in~n=-1}] Lambdas: [0, 0, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,271 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:01:59,271 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:01:59,291 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:01:59,291 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=7} Honda state: {ackermann_#in~m=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-29 00:01:59,434 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:01:59,434 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:01:59,435 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:01:59,435 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:01:59,435 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:01:59,435 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:01:59,436 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:01:59,436 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:01:59,436 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Lasso [2018-11-29 00:01:59,436 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:01:59,437 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:01:59,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:01:59,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,270 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-29 00:02:00,521 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:00,521 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:00,525 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:00,526 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:00,541 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:00,541 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:00,571 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:00,571 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:00,575 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:00,575 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:00,596 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:00,596 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:00,606 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:00,606 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret5=0} Honda state: {ULTIMATE.start_main_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:00,629 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:00,629 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:00,633 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:00,633 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:00,654 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:00,655 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:00,681 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:00,681 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:00,706 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:00,708 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:00,708 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:00,708 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:00,708 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:00,708 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:00,709 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:00,709 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:00,709 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:00,709 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Lasso [2018-11-29 00:02:00,709 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:00,709 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:00,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:00,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:01,108 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:01,114 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:01,115 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:01,116 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:01,117 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:01,117 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:01,117 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:01,117 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:01,120 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:01,120 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:01,123 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:01,124 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:01,124 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:01,125 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:01,125 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:01,125 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:01,125 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:01,126 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:01,126 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:01,127 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:01,127 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:01,128 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:01,128 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:01,128 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:01,128 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:01,128 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:01,129 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:01,129 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:01,130 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:01,130 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:01,131 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:01,131 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:01,131 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:01,131 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:01,131 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:01,132 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:01,132 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:01,133 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:01,133 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:01,134 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:01,134 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:01,134 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-29 00:02:01,134 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:01,143 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-29 00:02:01,144 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-29 00:02:01,298 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:01,338 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-29 00:02:01,339 INFO L444 ModelExtractionUtils]: 4 out of 11 variables were initially zero. Simplification set additionally 4 variables to zero. [2018-11-29 00:02:01,341 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:01,349 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-29 00:02:01,349 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:01,353 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~n) = 1*ackermann_#in~n Supporting invariants [1*ackermann_#in~n >= 0] [2018-11-29 00:02:01,368 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-29 00:02:01,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:01,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:01,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:01,733 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-29 00:02:01,734 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 5 states. [2018-11-29 00:02:01,939 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 5 states. Result 49 states and 64 transitions. Complement of second has 13 states. [2018-11-29 00:02:01,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:01,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-29 00:02:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2018-11-29 00:02:01,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-29 00:02:01,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:01,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-29 00:02:01,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:01,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-29 00:02:01,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:01,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2018-11-29 00:02:01,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-29 00:02:01,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 30 states and 41 transitions. [2018-11-29 00:02:01,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2018-11-29 00:02:01,968 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-29 00:02:01,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 41 transitions. [2018-11-29 00:02:01,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:01,971 INFO L705 BuchiCegarLoop]: Abstraction has 30 states and 41 transitions. [2018-11-29 00:02:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 41 transitions. [2018-11-29 00:02:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-11-29 00:02:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-29 00:02:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-11-29 00:02:02,004 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-29 00:02:02,004 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-29 00:02:02,005 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-29 00:02:02,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-11-29 00:02:02,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-29 00:02:02,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:02,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:02,007 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:02,007 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:02:02,008 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 140#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 141#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 148#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 150#ackermannENTRY ~m := #in~m;~n := #in~n; 154#L15 assume !(0 == ~m); 165#L18 assume 0 == ~n; 143#L19 call #t~ret0 := ackermann(~m - 1, 1);< 146#ackermannENTRY [2018-11-29 00:02:02,008 INFO L796 eck$LassoCheckResult]: Loop: 146#ackermannENTRY ~m := #in~m;~n := #in~n; 163#L15 assume !(0 == ~m); 162#L18 assume 0 == ~n; 145#L19 call #t~ret0 := ackermann(~m - 1, 1);< 146#ackermannENTRY [2018-11-29 00:02:02,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:02,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1317091536, now seen corresponding path program 1 times [2018-11-29 00:02:02,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:02,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:02,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:02,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:02,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:02,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1666415, now seen corresponding path program 1 times [2018-11-29 00:02:02,023 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:02,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:02,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:02,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:02,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:02,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1185130174, now seen corresponding path program 2 times [2018-11-29 00:02:02,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:02,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:02,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:02,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:02,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:02,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-29 00:02:02,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-29 00:02:02,193 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:02,193 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:02,194 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:02,194 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:02,194 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:02,194 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,194 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:02,195 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:02,195 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-29 00:02:02,195 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:02,195 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:02,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,316 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:02,316 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:02,320 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:02,323 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:02,323 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,344 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:02,344 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:02,346 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:02,347 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,367 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:02,367 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:02,370 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:02,370 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,392 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:02,392 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:02,396 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:02,396 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:02,417 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:02,420 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:02,420 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,441 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:02,441 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:02,471 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:02,471 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,486 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:02,505 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:02,505 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:02,505 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:02,505 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:02,505 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:02,505 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:02,506 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:02,506 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:02,506 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-29 00:02:02,506 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:02,506 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:02,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:02,618 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:02,618 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:02,619 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:02,620 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:02,620 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:02,620 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:02,620 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:02,620 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:02,621 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:02,621 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:02,622 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:02,623 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:02,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:02,623 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:02,623 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:02,623 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:02,624 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:02,624 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:02,624 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:02,625 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:02,626 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:02,626 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:02,626 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:02,626 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:02,626 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:02,627 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:02,627 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:02,627 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:02,628 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:02,628 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:02,629 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:02,629 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:02,629 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:02,629 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:02,629 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:02,630 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:02,630 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:02,631 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:02,631 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:02,632 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:02,632 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:02,632 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:02,632 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:02,632 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:02,633 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:02,633 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:02,637 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:02,639 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:02,640 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:02,640 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:02,640 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:02,640 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:02,640 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:02,641 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:02,641 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:02,642 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:02,643 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:02,643 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:02,643 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:02,643 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:02,646 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:02,646 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:02,647 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:02,647 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:02,653 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:02,655 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-29 00:02:02,655 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-29 00:02:02,655 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:02,655 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-29 00:02:02,656 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:02,657 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~n) = -2*ackermann_#in~n + 1 Supporting invariants [] [2018-11-29 00:02:02,658 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-29 00:02:02,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:02,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:02,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:02,862 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-29 00:02:02,862 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 10 Second operand 4 states. [2018-11-29 00:02:03,070 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 61 states and 85 transitions. Complement of second has 13 states. [2018-11-29 00:02:03,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-29 00:02:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2018-11-29 00:02:03,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-29 00:02:03,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:03,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-29 00:02:03,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:03,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-29 00:02:03,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:03,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 85 transitions. [2018-11-29 00:02:03,082 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-29 00:02:03,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 53 states and 77 transitions. [2018-11-29 00:02:03,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-29 00:02:03,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-29 00:02:03,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 77 transitions. [2018-11-29 00:02:03,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:03,086 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 77 transitions. [2018-11-29 00:02:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 77 transitions. [2018-11-29 00:02:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-11-29 00:02:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-29 00:02:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2018-11-29 00:02:03,097 INFO L728 BuchiCegarLoop]: Abstraction has 47 states and 67 transitions. [2018-11-29 00:02:03,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-29 00:02:03,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-29 00:02:03,102 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 4 states. [2018-11-29 00:02:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:03,166 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-11-29 00:02:03,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-29 00:02:03,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2018-11-29 00:02:03,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-29 00:02:03,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 48 states and 66 transitions. [2018-11-29 00:02:03,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-29 00:02:03,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2018-11-29 00:02:03,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 66 transitions. [2018-11-29 00:02:03,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:03,176 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 66 transitions. [2018-11-29 00:02:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 66 transitions. [2018-11-29 00:02:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-11-29 00:02:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-29 00:02:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2018-11-29 00:02:03,183 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 58 transitions. [2018-11-29 00:02:03,183 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 58 transitions. [2018-11-29 00:02:03,183 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-29 00:02:03,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 58 transitions. [2018-11-29 00:02:03,185 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-29 00:02:03,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:03,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:03,186 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:03,186 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-29 00:02:03,186 INFO L794 eck$LassoCheckResult]: Stem: 423#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 398#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 399#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 406#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 408#ackermannENTRY ~m := #in~m;~n := #in~n; 427#L15 assume !(0 == ~m); 429#L18 assume 0 == ~n; 413#L19 call #t~ret0 := ackermann(~m - 1, 1);< 414#ackermannENTRY [2018-11-29 00:02:03,186 INFO L796 eck$LassoCheckResult]: Loop: 414#ackermannENTRY ~m := #in~m;~n := #in~n; 416#L15 assume !(0 == ~m); 419#L18 assume !(0 == ~n); 402#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 404#ackermannENTRY ~m := #in~m;~n := #in~n; 434#L15 assume !(0 == ~m); 435#L18 assume 0 == ~n; 415#L19 call #t~ret0 := ackermann(~m - 1, 1);< 414#ackermannENTRY [2018-11-29 00:02:03,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:03,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1317091536, now seen corresponding path program 3 times [2018-11-29 00:02:03,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:03,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:03,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:03,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:03,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:03,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:03,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 1 times [2018-11-29 00:02:03,199 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:03,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:03,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:03,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:03,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:03,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:03,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1880893067, now seen corresponding path program 1 times [2018-11-29 00:02:03,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:03,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:03,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:03,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:03,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:03,510 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2018-11-29 00:02:03,526 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:03,526 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:03,526 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:03,526 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:03,526 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:03,526 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,526 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:03,526 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:03,527 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-29 00:02:03,527 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:03,527 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:03,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:03,727 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:03,728 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,731 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,732 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,735 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,735 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,756 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,756 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,762 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,762 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=1} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,781 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,781 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,784 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,784 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,804 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,804 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,806 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,807 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,827 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,827 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,830 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,830 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,851 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,851 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,863 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,863 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,882 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,882 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,902 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,902 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,926 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:03,926 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:03,951 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:03,951 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:03,965 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:03,965 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-8} Honda state: {ackermann_#in~m=-8} Generalized eigenvectors: [{ackermann_#in~m=0}, {ackermann_#in~m=0}, {ackermann_#in~m=-1}] Lambdas: [15, 0, 1] Nus: [0, 0] [2018-11-29 00:02:04,179 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:04,180 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:04,180 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:04,180 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:04,180 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:04,180 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,180 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:04,180 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:04,181 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Lasso [2018-11-29 00:02:04,181 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:04,181 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:04,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,409 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:04,409 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,419 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,422 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,422 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,442 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,442 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,445 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,445 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,469 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,469 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=0} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,490 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,490 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,493 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,493 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,518 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,518 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,522 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,522 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,542 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,543 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,545 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,546 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,566 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,566 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,569 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,569 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,591 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,591 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,610 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,610 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret5=0} Honda state: {ULTIMATE.start_main_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,638 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,639 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,641 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,641 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,664 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,668 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,668 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,689 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,689 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,692 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,692 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,713 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,713 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,716 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,716 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~result~0=0} Honda state: {ULTIMATE.start_main_~result~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,738 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,739 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,742 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,742 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~n~0=0} Honda state: {ULTIMATE.start_main_~n~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,764 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,764 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,768 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:04,768 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,788 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:04,788 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,810 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:04,810 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:04,832 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:04,834 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:04,834 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:04,834 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:04,834 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:04,834 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:04,834 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:04,834 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:04,834 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:04,834 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Lasso [2018-11-29 00:02:04,835 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:04,835 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:04,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:04,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:05,011 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:05,011 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:05,012 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,013 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,013 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,013 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,013 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,013 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,014 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,014 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,015 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,015 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,016 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,016 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,016 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,016 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,016 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,017 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,017 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,017 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,018 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,018 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,018 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,018 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,019 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,020 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-29 00:02:05,020 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-29 00:02:05,032 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,032 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,035 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,036 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,036 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,036 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,036 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,037 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,037 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,037 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,038 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,038 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,039 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,039 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,039 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,039 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,039 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,039 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,040 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,040 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,041 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,041 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,041 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,041 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,041 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,041 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,042 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,042 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,043 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,043 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,043 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,043 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,043 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,044 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,044 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,044 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,044 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,045 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,045 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,045 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,045 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,046 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,046 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,046 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,046 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,047 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,047 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,047 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,047 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,048 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,048 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,048 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,048 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,048 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,056 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,056 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,057 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,057 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,057 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,057 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,057 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,058 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,058 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,059 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,059 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,059 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,060 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,060 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,060 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,060 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,061 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,061 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,062 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,062 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,062 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,063 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:05,063 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,063 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:05,063 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,063 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:05,064 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:05,064 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:05,065 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:05,065 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:05,065 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:05,065 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-29 00:02:05,066 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:05,075 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-29 00:02:05,075 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-29 00:02:05,135 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:05,173 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2018-11-29 00:02:05,174 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 5 variables to zero. [2018-11-29 00:02:05,174 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:05,176 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-29 00:02:05,177 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:05,177 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~m) = 1*ackermann_#in~m Supporting invariants [1*ackermann_#in~m >= 0] [2018-11-29 00:02:05,205 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-29 00:02:05,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:05,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:05,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-29 00:02:05,833 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 4 loop predicates [2018-11-29 00:02:05,833 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 58 transitions. cyclomatic complexity: 19 Second operand 9 states. [2018-11-29 00:02:06,274 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 58 transitions. cyclomatic complexity: 19. Second operand 9 states. Result 139 states and 195 transitions. Complement of second has 32 states. [2018-11-29 00:02:06,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 5 stem states 4 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-29 00:02:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 52 transitions. [2018-11-29 00:02:06,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-29 00:02:06,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:06,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 16 letters. Loop has 8 letters. [2018-11-29 00:02:06,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:06,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 8 letters. Loop has 16 letters. [2018-11-29 00:02:06,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:06,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 195 transitions. [2018-11-29 00:02:06,284 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2018-11-29 00:02:06,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 85 states and 119 transitions. [2018-11-29 00:02:06,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2018-11-29 00:02:06,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2018-11-29 00:02:06,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 119 transitions. [2018-11-29 00:02:06,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:06,290 INFO L705 BuchiCegarLoop]: Abstraction has 85 states and 119 transitions. [2018-11-29 00:02:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 119 transitions. [2018-11-29 00:02:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 69. [2018-11-29 00:02:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-29 00:02:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 98 transitions. [2018-11-29 00:02:06,299 INFO L728 BuchiCegarLoop]: Abstraction has 69 states and 98 transitions. [2018-11-29 00:02:06,299 INFO L608 BuchiCegarLoop]: Abstraction has 69 states and 98 transitions. [2018-11-29 00:02:06,300 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-29 00:02:06,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 98 transitions. [2018-11-29 00:02:06,301 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2018-11-29 00:02:06,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:06,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:06,302 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:06,302 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:02:06,302 INFO L794 eck$LassoCheckResult]: Stem: 733#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 701#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 702#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 710#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 711#ackermannENTRY ~m := #in~m;~n := #in~n; 765#L15 assume !(0 == ~m); 768#L18 assume 0 == ~n; 706#L19 call #t~ret0 := ackermann(~m - 1, 1);< 714#ackermannENTRY ~m := #in~m;~n := #in~n; 746#L15 assume !(0 == ~m); 731#L18 [2018-11-29 00:02:06,303 INFO L796 eck$LassoCheckResult]: Loop: 731#L18 assume !(0 == ~n); 703#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 704#ackermannENTRY ~m := #in~m;~n := #in~n; 723#L15 assume !(0 == ~m); 731#L18 [2018-11-29 00:02:06,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1290385452, now seen corresponding path program 4 times [2018-11-29 00:02:06,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:06,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:06,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:06,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:06,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:06,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:06,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1978510, now seen corresponding path program 2 times [2018-11-29 00:02:06,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:06,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:06,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:06,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:06,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:06,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:06,319 INFO L82 PathProgramCache]: Analyzing trace with hash 743855841, now seen corresponding path program 2 times [2018-11-29 00:02:06,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:06,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:06,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:06,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:06,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:06,419 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:06,420 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:06,420 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:06,420 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:06,420 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:06,420 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:06,421 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:06,421 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:06,421 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-29 00:02:06,421 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:06,421 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:06,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:06,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:06,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:06,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:06,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:06,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:06,621 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:06,622 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:06,626 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:06,626 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:06,629 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:06,629 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:06,651 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:06,651 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:06,653 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:06,654 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:06,674 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:06,674 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:06,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:06,701 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:07,022 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:07,023 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=-6, ackermann_#in~n=-3} Honda state: {ackermann_~n=-6, ackermann_#in~n=-3} Generalized eigenvectors: [{ackermann_~n=0, ackermann_#in~n=5}, {ackermann_~n=0, ackermann_#in~n=-8}, {ackermann_~n=-1, ackermann_#in~n=-1}] Lambdas: [0, 0, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:07,043 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:07,043 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:07,056 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:07,056 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:07,089 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:07,089 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:07,100 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:07,100 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:07,151 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:07,151 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:07,170 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:07,170 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-8, ackermann_~m=-8} Honda state: {ackermann_#in~m=-8, ackermann_~m=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-29 00:02:07,301 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-29 00:02:07,402 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-29 00:02:07,570 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-29 00:02:07,797 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:07,797 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:07,797 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:07,797 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:07,797 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:07,798 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:07,798 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:07,798 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:07,798 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Lasso [2018-11-29 00:02:07,798 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:07,798 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:07,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:07,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,005 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:08,005 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,012 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,012 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,019 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,019 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret5=0} Honda state: {ULTIMATE.start_main_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,039 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,039 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,042 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,042 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,062 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,062 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,064 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,065 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,088 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,088 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,090 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,091 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret6=0} Honda state: {ULTIMATE.start_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,111 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,112 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,115 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,115 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,137 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,137 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,141 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,141 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,161 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,161 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,163 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,164 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,184 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,184 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,189 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,189 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=0, ackermann_~m=0} Honda state: {ackermann_#in~m=2, ackermann_~m=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,209 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,210 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,213 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:08,213 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,234 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:08,235 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,257 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:08,258 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:08,412 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:08,414 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:08,414 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:08,414 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:08,414 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:08,415 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:08,415 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:08,415 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:08,415 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:08,415 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Lasso [2018-11-29 00:02:08,415 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:08,415 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:08,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:08,737 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:08,738 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:08,738 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,738 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,739 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,739 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,739 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,739 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,739 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,740 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,740 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,741 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,741 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,741 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,741 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,741 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,742 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,742 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,742 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,742 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,743 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,743 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,743 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,744 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,744 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,744 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,744 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,744 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,745 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,745 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,746 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,746 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,746 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,746 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,746 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,747 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,747 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,747 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,748 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,748 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,748 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,748 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,749 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,749 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,749 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,749 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,750 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,750 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,751 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,751 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,751 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,751 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,752 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,752 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,752 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,753 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,753 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,753 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,754 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-29 00:02:08,754 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,758 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-29 00:02:08,758 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-29 00:02:08,776 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,777 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,777 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,778 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,778 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,778 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,778 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,779 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,779 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,780 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,780 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,780 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,780 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:08,781 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,781 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:08,781 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,781 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:08,781 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:08,782 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:08,782 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:08,783 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:08,783 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:08,783 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-29 00:02:08,783 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:08,786 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-29 00:02:08,786 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-29 00:02:08,819 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:08,839 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-29 00:02:08,840 INFO L444 ModelExtractionUtils]: 11 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-29 00:02:08,840 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:08,842 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-29 00:02:08,842 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:08,842 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_~n) = 1*ackermann_~n Supporting invariants [1*ackermann_~n >= 0] [2018-11-29 00:02:08,868 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-29 00:02:08,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:09,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:09,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:09,123 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 4 loop predicates [2018-11-29 00:02:09,124 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34 Second operand 7 states. [2018-11-29 00:02:09,155 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34. Second operand 7 states. Result 70 states and 99 transitions. Complement of second has 6 states. [2018-11-29 00:02:09,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-29 00:02:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-29 00:02:09,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-29 00:02:09,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:09,159 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-29 00:02:09,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:09,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:09,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:09,271 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 4 loop predicates [2018-11-29 00:02:09,271 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34 Second operand 7 states. [2018-11-29 00:02:09,299 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34. Second operand 7 states. Result 70 states and 99 transitions. Complement of second has 6 states. [2018-11-29 00:02:09,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-29 00:02:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-29 00:02:09,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-29 00:02:09,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:09,305 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-29 00:02:09,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:09,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:09,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:09,437 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 4 loop predicates [2018-11-29 00:02:09,437 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34 Second operand 7 states. [2018-11-29 00:02:09,582 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34. Second operand 7 states. Result 141 states and 191 transitions. Complement of second has 38 states. [2018-11-29 00:02:09,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 3 stem states 3 non-accepting loop states 2 accepting loop states [2018-11-29 00:02:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-29 00:02:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2018-11-29 00:02:09,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-29 00:02:09,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:09,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-29 00:02:09,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:09,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-29 00:02:09,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:09,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 141 states and 191 transitions. [2018-11-29 00:02:09,592 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2018-11-29 00:02:09,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 141 states to 98 states and 142 transitions. [2018-11-29 00:02:09,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-11-29 00:02:09,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2018-11-29 00:02:09,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 142 transitions. [2018-11-29 00:02:09,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:09,596 INFO L705 BuchiCegarLoop]: Abstraction has 98 states and 142 transitions. [2018-11-29 00:02:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 142 transitions. [2018-11-29 00:02:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2018-11-29 00:02:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-29 00:02:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2018-11-29 00:02:09,608 INFO L728 BuchiCegarLoop]: Abstraction has 96 states and 138 transitions. [2018-11-29 00:02:09,608 INFO L608 BuchiCegarLoop]: Abstraction has 96 states and 138 transitions. [2018-11-29 00:02:09,608 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-29 00:02:09,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 138 transitions. [2018-11-29 00:02:09,610 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2018-11-29 00:02:09,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:09,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:09,611 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:09,611 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:02:09,611 INFO L794 eck$LassoCheckResult]: Stem: 1316#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 1278#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 1279#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 1285#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 1287#ackermannENTRY ~m := #in~m;~n := #in~n; 1296#L15 assume !(0 == ~m); 1373#L18 assume !(0 == ~n); 1284#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 1286#ackermannENTRY ~m := #in~m;~n := #in~n; 1299#L15 assume 0 == ~m;#res := 1 + ~n; 1319#ackermannFINAL assume true; 1320#ackermannEXIT >#44#return; 1281#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 1283#ackermannENTRY [2018-11-29 00:02:09,611 INFO L796 eck$LassoCheckResult]: Loop: 1283#ackermannENTRY ~m := #in~m;~n := #in~n; 1372#L15 assume !(0 == ~m); 1371#L18 assume !(0 == ~n); 1280#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 1283#ackermannENTRY [2018-11-29 00:02:09,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:09,612 INFO L82 PathProgramCache]: Analyzing trace with hash 804076149, now seen corresponding path program 1 times [2018-11-29 00:02:09,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:09,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:09,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:09,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:09,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-29 00:02:09,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-29 00:02:09,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-29 00:02:09,675 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-29 00:02:09,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1666510, now seen corresponding path program 3 times [2018-11-29 00:02:09,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:09,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:09,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:09,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:09,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:09,742 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:09,742 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:09,742 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:09,743 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:09,743 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:09,743 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:09,743 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:09,743 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:09,744 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-29 00:02:09,744 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:09,744 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:09,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:09,885 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:09,885 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:09,891 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:09,891 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:09,894 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:09,894 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:09,913 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:09,913 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:09,916 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:09,916 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:09,936 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:09,936 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:09,939 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:09,939 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:09,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:09,959 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:09,963 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:09,963 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:09,983 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:09,983 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:10,006 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:10,006 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:10,019 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:10,019 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=-1} Honda state: {ackermann_#in~n=-1} Generalized eigenvectors: [{ackermann_#in~n=0}, {ackermann_#in~n=0}, {ackermann_#in~n=-1}] Lambdas: [0, 0, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:10,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:10,041 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:10,044 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:10,045 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=7} Honda state: {ackermann_#in~m=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:10,066 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:10,066 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:10,069 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:10,069 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 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 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:10,091 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:10,091 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:10,094 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:10,094 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-29 00:02:10,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-29 00:02:10,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-29 00:02:10,114 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. cyclomatic complexity: 46 Second operand 5 states. [2018-11-29 00:02:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:10,183 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2018-11-29 00:02:10,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-29 00:02:10,185 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 122 transitions. [2018-11-29 00:02:10,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2018-11-29 00:02:10,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 85 states and 116 transitions. [2018-11-29 00:02:10,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2018-11-29 00:02:10,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-29 00:02:10,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 116 transitions. [2018-11-29 00:02:10,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:10,193 INFO L705 BuchiCegarLoop]: Abstraction has 85 states and 116 transitions. [2018-11-29 00:02:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 116 transitions. [2018-11-29 00:02:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2018-11-29 00:02:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-29 00:02:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2018-11-29 00:02:10,202 INFO L728 BuchiCegarLoop]: Abstraction has 82 states and 112 transitions. [2018-11-29 00:02:10,202 INFO L608 BuchiCegarLoop]: Abstraction has 82 states and 112 transitions. [2018-11-29 00:02:10,202 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-29 00:02:10,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 112 transitions. [2018-11-29 00:02:10,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2018-11-29 00:02:10,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:10,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:10,205 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:10,205 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:10,206 INFO L794 eck$LassoCheckResult]: Stem: 1508#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 1477#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 1478#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 1485#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 1486#ackermannENTRY ~m := #in~m;~n := #in~n; 1502#L15 assume !(0 == ~m); 1505#L18 assume 0 == ~n; 1489#L19 call #t~ret0 := ackermann(~m - 1, 1);< 1490#ackermannENTRY ~m := #in~m;~n := #in~n; 1527#L15 assume !(0 == ~m); 1552#L18 assume !(0 == ~n); 1488#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 1531#ackermannENTRY ~m := #in~m;~n := #in~n; 1557#L15 assume !(0 == ~m); 1541#L18 assume 0 == ~n; 1491#L19 call #t~ret0 := ackermann(~m - 1, 1);< 1492#ackermannENTRY ~m := #in~m;~n := #in~n; 1525#L15 assume 0 == ~m;#res := 1 + ~n; 1523#ackermannFINAL assume true; 1517#ackermannEXIT >#42#return; 1519#L19-1 #res := #t~ret0;havoc #t~ret0; 1533#ackermannFINAL assume true; 1530#ackermannEXIT >#44#return; 1480#L21-1 [2018-11-29 00:02:10,206 INFO L796 eck$LassoCheckResult]: Loop: 1480#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 1529#ackermannENTRY ~m := #in~m;~n := #in~n; 1534#L15 assume !(0 == ~m); 1535#L18 assume 0 == ~n; 1521#L19 call #t~ret0 := ackermann(~m - 1, 1);< 1522#ackermannENTRY ~m := #in~m;~n := #in~n; 1549#L15 assume !(0 == ~m); 1548#L18 assume !(0 == ~n); 1483#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 1547#ackermannENTRY ~m := #in~m;~n := #in~n; 1545#L15 assume !(0 == ~m); 1542#L18 assume 0 == ~n; 1521#L19 call #t~ret0 := ackermann(~m - 1, 1);< 1522#ackermannENTRY ~m := #in~m;~n := #in~n; 1549#L15 assume 0 == ~m;#res := 1 + ~n; 1550#ackermannFINAL assume true; 1551#ackermannEXIT >#42#return; 1519#L19-1 #res := #t~ret0;havoc #t~ret0; 1533#ackermannFINAL assume true; 1530#ackermannEXIT >#44#return; 1480#L21-1 [2018-11-29 00:02:10,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1914958677, now seen corresponding path program 1 times [2018-11-29 00:02:10,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:10,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:10,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:10,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:10,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:10,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:10,219 INFO L82 PathProgramCache]: Analyzing trace with hash -190850389, now seen corresponding path program 1 times [2018-11-29 00:02:10,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:10,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:10,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:10,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:10,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:10,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:10,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1249696767, now seen corresponding path program 1 times [2018-11-29 00:02:10,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:10,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:10,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:10,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:10,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 48 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-29 00:02:10,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:10,405 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:10,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:10,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-29 00:02:10,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:10,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2018-11-29 00:02:11,081 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:11,081 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:11,081 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:11,081 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:11,081 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:11,082 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:11,082 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:11,082 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:11,082 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration6_Loop [2018-11-29 00:02:11,082 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:11,082 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:11,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:11,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:11,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:11,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:11,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:11,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:11,183 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:11,184 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:11,194 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:11,194 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:11,201 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:11,201 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 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 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:11,221 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:11,221 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 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 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:11,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:11,246 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:12,081 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:12,083 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:12,084 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:12,084 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:12,084 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:12,084 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:12,084 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:12,084 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:12,084 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:12,084 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration6_Loop [2018-11-29 00:02:12,084 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:12,084 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:12,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:12,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:12,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:12,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:12,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:12,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:12,195 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:12,195 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:12,195 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:12,196 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:12,196 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:12,197 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:12,197 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:12,197 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:12,198 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:12,198 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:12,199 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:12,199 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:12,200 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:12,200 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:12,200 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:12,200 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:12,200 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:12,200 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:12,201 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:12,201 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:12,202 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:12,202 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:12,202 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:12,202 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:12,202 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:12,202 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:12,203 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:12,203 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:12,205 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:12,205 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:12,205 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:12,206 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:12,206 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:12,206 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:12,206 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:12,206 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:12,206 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:12,209 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:12,210 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-29 00:02:12,210 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-29 00:02:12,211 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:12,211 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-29 00:02:12,211 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:12,211 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_~m) = 1*ackermann_~m Supporting invariants [] [2018-11-29 00:02:12,211 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-29 00:02:12,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:12,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:12,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-29 00:02:12,478 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2018-11-29 00:02:12,478 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 112 transitions. cyclomatic complexity: 33 Second operand 11 states. [2018-11-29 00:02:12,782 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 112 transitions. cyclomatic complexity: 33. Second operand 11 states. Result 180 states and 253 transitions. Complement of second has 31 states. [2018-11-29 00:02:12,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-29 00:02:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 31 transitions. [2018-11-29 00:02:12,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 23 letters. Loop has 20 letters. [2018-11-29 00:02:12,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:12,787 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-29 00:02:12,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:12,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:12,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-29 00:02:13,074 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2018-11-29 00:02:13,074 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 112 transitions. cyclomatic complexity: 33 Second operand 11 states. [2018-11-29 00:02:13,779 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 112 transitions. cyclomatic complexity: 33. Second operand 11 states. Result 288 states and 426 transitions. Complement of second has 49 states. [2018-11-29 00:02:13,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-29 00:02:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 44 transitions. [2018-11-29 00:02:13,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 23 letters. Loop has 20 letters. [2018-11-29 00:02:13,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:13,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 43 letters. Loop has 20 letters. [2018-11-29 00:02:13,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:13,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 23 letters. Loop has 40 letters. [2018-11-29 00:02:13,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:13,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 288 states and 426 transitions. [2018-11-29 00:02:13,801 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 47 [2018-11-29 00:02:13,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 288 states to 227 states and 351 transitions. [2018-11-29 00:02:13,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 128 [2018-11-29 00:02:13,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 130 [2018-11-29 00:02:13,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 227 states and 351 transitions. [2018-11-29 00:02:13,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:13,815 INFO L705 BuchiCegarLoop]: Abstraction has 227 states and 351 transitions. [2018-11-29 00:02:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states and 351 transitions. [2018-11-29 00:02:13,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 212. [2018-11-29 00:02:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-11-29 00:02:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 327 transitions. [2018-11-29 00:02:13,852 INFO L728 BuchiCegarLoop]: Abstraction has 212 states and 327 transitions. [2018-11-29 00:02:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-29 00:02:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2018-11-29 00:02:13,852 INFO L87 Difference]: Start difference. First operand 212 states and 327 transitions. Second operand 21 states. [2018-11-29 00:02:15,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:15,636 INFO L93 Difference]: Finished difference Result 458 states and 602 transitions. [2018-11-29 00:02:15,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-29 00:02:15,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 458 states and 602 transitions. [2018-11-29 00:02:15,650 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 49 [2018-11-29 00:02:15,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 458 states to 410 states and 537 transitions. [2018-11-29 00:02:15,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2018-11-29 00:02:15,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 310 [2018-11-29 00:02:15,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 537 transitions. [2018-11-29 00:02:15,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:15,659 INFO L705 BuchiCegarLoop]: Abstraction has 410 states and 537 transitions. [2018-11-29 00:02:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 537 transitions. [2018-11-29 00:02:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 341. [2018-11-29 00:02:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-11-29 00:02:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2018-11-29 00:02:15,686 INFO L728 BuchiCegarLoop]: Abstraction has 341 states and 462 transitions. [2018-11-29 00:02:15,686 INFO L608 BuchiCegarLoop]: Abstraction has 341 states and 462 transitions. [2018-11-29 00:02:15,686 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-29 00:02:15,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 341 states and 462 transitions. [2018-11-29 00:02:15,693 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 34 [2018-11-29 00:02:15,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:15,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:15,697 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:15,697 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:02:15,698 INFO L794 eck$LassoCheckResult]: Stem: 3362#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 3310#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 3311#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 3333#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 3334#ackermannENTRY ~m := #in~m;~n := #in~n; 3405#L15 assume !(0 == ~m); 3404#L18 assume 0 == ~n; 3336#L19 call #t~ret0 := ackermann(~m - 1, 1);< 3397#ackermannENTRY ~m := #in~m;~n := #in~n; 3402#L15 assume !(0 == ~m); 3411#L18 assume !(0 == ~n); 3382#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 3407#ackermannENTRY ~m := #in~m;~n := #in~n; 3388#L15 assume !(0 == ~m); 3381#L18 assume 0 == ~n; 3383#L19 call #t~ret0 := ackermann(~m - 1, 1);< 3347#ackermannENTRY ~m := #in~m;~n := #in~n; 3480#L15 assume 0 == ~m;#res := 1 + ~n; 3494#ackermannFINAL assume true; 3415#ackermannEXIT >#42#return; 3416#L19-1 #res := #t~ret0;havoc #t~ret0; 3622#ackermannFINAL assume true; 3620#ackermannEXIT >#44#return; 3316#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 3337#ackermannENTRY ~m := #in~m;~n := #in~n; 3644#L15 assume !(0 == ~m); 3352#L18 assume !(0 == ~n); 3312#L21 [2018-11-29 00:02:15,698 INFO L796 eck$LassoCheckResult]: Loop: 3312#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 3318#ackermannENTRY ~m := #in~m;~n := #in~n; 3348#L15 assume !(0 == ~m); 3363#L18 assume !(0 == ~n); 3312#L21 [2018-11-29 00:02:15,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:15,698 INFO L82 PathProgramCache]: Analyzing trace with hash 229970726, now seen corresponding path program 2 times [2018-11-29 00:02:15,698 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:15,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:15,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:15,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:15,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-29 00:02:15,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:15,961 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:15,974 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-29 00:02:15,987 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-29 00:02:15,987 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-29 00:02:15,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-29 00:02:16,025 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:16,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-29 00:02:16,026 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-29 00:02:16,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2228500, now seen corresponding path program 4 times [2018-11-29 00:02:16,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:16,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:16,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:16,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,109 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:16,109 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:16,109 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:16,110 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:16,110 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:16,110 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,110 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:16,110 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:16,110 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration7_Loop [2018-11-29 00:02:16,111 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:16,111 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:16,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:16,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:16,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:16,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:16,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:16,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:16,280 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:16,280 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 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 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,292 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:16,292 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:16,295 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:16,295 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 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 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,317 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:16,317 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:16,327 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:16,327 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 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 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:16,347 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:16,351 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:16,351 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 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 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,370 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:16,370 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:16,373 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:16,374 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 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 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,394 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:16,394 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:16,399 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:16,399 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=7, ackermann_~m=7} Honda state: {ackermann_#in~m=7, ackermann_~m=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 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 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,420 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:16,420 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 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 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,447 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:16,447 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:16,634 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:16,634 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=-4, ackermann_#in~n=-8} Honda state: {ackermann_~n=-4, ackermann_#in~n=-8} Generalized eigenvectors: [{ackermann_~n=-1, ackermann_#in~n=0}, {ackermann_~n=0, ackermann_#in~n=-1}, {ackermann_~n=0, ackermann_#in~n=4}] Lambdas: [1, 4, 0] Nus: [1, 1] [2018-11-29 00:02:16,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-29 00:02:16,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-29 00:02:16,652 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. cyclomatic complexity: 134 Second operand 7 states. [2018-11-29 00:02:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:16,756 INFO L93 Difference]: Finished difference Result 255 states and 320 transitions. [2018-11-29 00:02:16,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-29 00:02:16,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 255 states and 320 transitions. [2018-11-29 00:02:16,762 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2018-11-29 00:02:16,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 255 states to 229 states and 287 transitions. [2018-11-29 00:02:16,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2018-11-29 00:02:16,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2018-11-29 00:02:16,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 287 transitions. [2018-11-29 00:02:16,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:16,766 INFO L705 BuchiCegarLoop]: Abstraction has 229 states and 287 transitions. [2018-11-29 00:02:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 287 transitions. [2018-11-29 00:02:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 212. [2018-11-29 00:02:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-11-29 00:02:16,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 268 transitions. [2018-11-29 00:02:16,779 INFO L728 BuchiCegarLoop]: Abstraction has 212 states and 268 transitions. [2018-11-29 00:02:16,779 INFO L608 BuchiCegarLoop]: Abstraction has 212 states and 268 transitions. [2018-11-29 00:02:16,779 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-29 00:02:16,779 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 212 states and 268 transitions. [2018-11-29 00:02:16,781 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2018-11-29 00:02:16,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:16,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:16,782 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [8, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:16,782 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:02:16,783 INFO L794 eck$LassoCheckResult]: Stem: 4037#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 3999#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 4000#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 4011#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 4012#ackermannENTRY ~m := #in~m;~n := #in~n; 4064#L15 assume !(0 == ~m); 4058#L18 assume 0 == ~n; 4049#L19 call #t~ret0 := ackermann(~m - 1, 1);< 4057#ackermannENTRY ~m := #in~m;~n := #in~n; 4055#L15 assume !(0 == ~m); 4056#L18 assume !(0 == ~n); 4042#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 4047#ackermannENTRY ~m := #in~m;~n := #in~n; 4048#L15 assume !(0 == ~m); 4041#L18 assume 0 == ~n; 4043#L19 call #t~ret0 := ackermann(~m - 1, 1);< 4021#ackermannENTRY ~m := #in~m;~n := #in~n; 4110#L15 assume !(0 == ~m); 4108#L18 assume !(0 == ~n); 4104#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 4105#ackermannENTRY ~m := #in~m;~n := #in~n; 4120#L15 assume !(0 == ~m); 4118#L18 assume 0 == ~n; 4112#L19 call #t~ret0 := ackermann(~m - 1, 1);< 4115#ackermannENTRY ~m := #in~m;~n := #in~n; 4119#L15 assume 0 == ~m;#res := 1 + ~n; 4117#ackermannFINAL assume true; 4111#ackermannEXIT >#42#return; 4109#L19-1 #res := #t~ret0;havoc #t~ret0; 4107#ackermannFINAL assume true; 4103#ackermannEXIT >#44#return; 4100#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 4101#ackermannENTRY ~m := #in~m;~n := #in~n; 4106#L15 assume 0 == ~m;#res := 1 + ~n; 4102#ackermannFINAL assume true; 4099#ackermannEXIT >#46#return; 4098#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 4097#ackermannFINAL assume true; 4086#ackermannEXIT >#42#return; 4077#L19-1 #res := #t~ret0;havoc #t~ret0; 4075#ackermannFINAL assume true; 4070#ackermannEXIT >#44#return; 4035#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 4066#ackermannENTRY ~m := #in~m;~n := #in~n; 4053#L15 assume !(0 == ~m); 4051#L18 assume !(0 == ~n); 4004#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 4005#ackermannENTRY [2018-11-29 00:02:16,783 INFO L796 eck$LassoCheckResult]: Loop: 4005#ackermannENTRY ~m := #in~m;~n := #in~n; 4162#L15 assume !(0 == ~m); 4156#L18 assume !(0 == ~n); 4001#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 4005#ackermannENTRY [2018-11-29 00:02:16,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:16,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2042677982, now seen corresponding path program 1 times [2018-11-29 00:02:16,783 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:16,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:16,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:16,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:16,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1666510, now seen corresponding path program 5 times [2018-11-29 00:02:16,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:16,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:16,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:16,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:16,804 INFO L82 PathProgramCache]: Analyzing trace with hash -997227989, now seen corresponding path program 2 times [2018-11-29 00:02:16,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:16,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:16,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:16,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,965 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:16,965 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:16,966 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:16,966 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:16,966 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:16,966 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,966 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:16,966 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:16,966 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration8_Loop [2018-11-29 00:02:16,966 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:16,966 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:16,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:16,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,091 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:17,092 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 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 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,095 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,096 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,098 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,098 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 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 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,119 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 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 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,142 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:17,142 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,154 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,154 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=-1} Honda state: {ackermann_#in~n=-1} Generalized eigenvectors: [{ackermann_#in~n=0}, {ackermann_#in~n=0}, {ackermann_#in~n=-1}] Lambdas: [0, 0, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 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 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,173 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,173 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,176 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,176 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 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 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,196 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,196 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,199 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,200 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 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 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,220 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,221 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,223 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,223 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 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 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,243 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,243 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,245 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,245 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 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 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,265 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,266 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,268 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,268 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 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 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,288 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,288 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,291 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,291 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-1} Honda state: {ackermann_#in~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-29 00:02:18,118 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-29 00:02:18,230 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-29 00:02:18,285 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:18,286 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:18,286 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:18,286 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:18,286 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:18,286 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,286 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:18,287 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:18,287 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration8_Lasso [2018-11-29 00:02:18,287 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:18,287 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:18,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,560 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:18,560 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 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 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,570 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,570 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,574 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,574 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 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 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,594 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,594 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,597 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,597 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 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 99 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,617 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,617 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,619 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,620 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 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 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,640 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,640 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,642 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,643 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 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 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,663 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,666 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,666 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 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 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,688 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,689 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,692 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,692 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=0} Honda state: {ackermann_#in~m=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 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 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,713 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,714 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,723 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,724 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret5=0} Honda state: {ULTIMATE.start_main_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 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 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,744 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,744 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,747 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,747 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret6=0} Honda state: {ULTIMATE.start_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 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 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,769 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,771 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,771 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~result~0=0} Honda state: {ULTIMATE.start_main_~result~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 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 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,791 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,792 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,794 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,794 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 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 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,813 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,813 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,816 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,816 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~n~0=0} Honda state: {ULTIMATE.start_main_~n~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 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 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,837 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,837 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,849 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,849 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:18,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,887 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,890 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:18,890 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 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 110 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,909 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:18,910 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 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 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,932 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:18,932 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:18,953 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:18,955 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:18,955 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:18,955 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:18,955 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:18,955 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:18,955 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:18,955 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:18,955 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:18,955 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration8_Lasso [2018-11-29 00:02:18,955 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:18,956 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:18,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,211 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:19,211 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:19,211 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,212 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,212 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,212 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,212 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,212 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,215 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,215 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,216 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,217 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,217 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,217 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,217 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,224 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,224 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,224 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,224 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,225 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,225 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,229 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,229 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,229 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,229 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,230 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,230 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,230 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,234 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,234 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,235 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,235 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,235 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-29 00:02:19,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,240 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-29 00:02:19,240 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-29 00:02:19,258 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,258 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,259 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,259 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,259 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,259 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,259 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,260 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,260 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,260 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,261 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,261 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,261 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,261 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,262 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,262 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,262 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,262 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,262 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,271 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,271 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,272 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,272 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,272 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,272 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,272 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,273 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,273 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,273 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,277 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,277 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,277 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,277 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,277 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,278 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,278 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,282 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,282 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,283 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,283 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,283 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,283 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,283 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,283 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,284 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,284 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,284 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,288 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,288 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,288 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,288 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,289 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,289 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,289 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,289 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,290 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,290 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,290 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,296 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,296 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,296 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,296 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,297 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,297 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,298 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,298 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,298 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,298 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,298 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,298 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,301 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,301 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,302 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,302 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,304 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,304 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,304 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,304 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,305 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,305 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,305 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,305 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,309 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,309 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,310 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:19,310 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,310 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:19,310 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,310 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:19,310 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:19,311 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:19,314 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:19,314 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:19,314 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:19,315 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-29 00:02:19,315 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:19,320 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-29 00:02:19,320 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-29 00:02:19,359 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:19,390 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-29 00:02:19,390 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-29 00:02:19,392 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:19,394 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-29 00:02:19,394 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:19,395 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~n) = 1*ackermann_#in~n Supporting invariants [1*ackermann_#in~n >= 0] [2018-11-29 00:02:19,423 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-29 00:02:19,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:19,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:20,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:20,335 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.13 stem predicates 3 loop predicates [2018-11-29 00:02:20,335 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63 Second operand 16 states. [2018-11-29 00:02:20,453 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63. Second operand 16 states. Result 221 states and 282 transitions. Complement of second has 7 states. [2018-11-29 00:02:20,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-29 00:02:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-29 00:02:20,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 47 letters. Loop has 4 letters. [2018-11-29 00:02:20,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:20,459 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-29 00:02:20,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:20,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:20,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:20,993 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.13 stem predicates 3 loop predicates [2018-11-29 00:02:20,993 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63 Second operand 16 states. [2018-11-29 00:02:21,116 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63. Second operand 16 states. Result 221 states and 282 transitions. Complement of second has 7 states. [2018-11-29 00:02:21,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-29 00:02:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-29 00:02:21,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 47 letters. Loop has 4 letters. [2018-11-29 00:02:21,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:21,124 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-29 00:02:21,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:21,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:21,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:21,704 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.13 stem predicates 3 loop predicates [2018-11-29 00:02:21,705 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63 Second operand 16 states. [2018-11-29 00:02:23,208 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63. Second operand 16 states. Result 506 states and 647 transitions. Complement of second has 68 states. [2018-11-29 00:02:23,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 25 states 20 stem states 2 non-accepting loop states 2 accepting loop states [2018-11-29 00:02:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-29 00:02:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 72 transitions. [2018-11-29 00:02:23,210 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 72 transitions. Stem has 47 letters. Loop has 4 letters. [2018-11-29 00:02:23,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:23,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 72 transitions. Stem has 51 letters. Loop has 4 letters. [2018-11-29 00:02:23,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:23,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 72 transitions. Stem has 47 letters. Loop has 8 letters. [2018-11-29 00:02:23,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:23,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 506 states and 647 transitions. [2018-11-29 00:02:23,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:23,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 506 states to 331 states and 405 transitions. [2018-11-29 00:02:23,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 266 [2018-11-29 00:02:23,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 270 [2018-11-29 00:02:23,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 331 states and 405 transitions. [2018-11-29 00:02:23,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:23,233 INFO L705 BuchiCegarLoop]: Abstraction has 331 states and 405 transitions. [2018-11-29 00:02:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states and 405 transitions. [2018-11-29 00:02:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 293. [2018-11-29 00:02:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-11-29 00:02:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 360 transitions. [2018-11-29 00:02:23,258 INFO L728 BuchiCegarLoop]: Abstraction has 293 states and 360 transitions. [2018-11-29 00:02:23,259 INFO L608 BuchiCegarLoop]: Abstraction has 293 states and 360 transitions. [2018-11-29 00:02:23,260 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-29 00:02:23,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 293 states and 360 transitions. [2018-11-29 00:02:23,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:23,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:23,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:23,265 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [9, 7, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:23,265 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-29 00:02:23,265 INFO L794 eck$LassoCheckResult]: Stem: 5855#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 5821#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 5822#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 5829#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 5830#ackermannENTRY ~m := #in~m;~n := #in~n; 5878#L15 assume !(0 == ~m); 5877#L18 assume 0 == ~n; 5871#L19 call #t~ret0 := ackermann(~m - 1, 1);< 5876#ackermannENTRY ~m := #in~m;~n := #in~n; 5874#L15 assume !(0 == ~m); 5875#L18 assume !(0 == ~n); 5839#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 5873#ackermannENTRY ~m := #in~m;~n := #in~n; 5866#L15 assume !(0 == ~m); 5868#L18 assume 0 == ~n; 5838#L19 call #t~ret0 := ackermann(~m - 1, 1);< 5840#ackermannENTRY ~m := #in~m;~n := #in~n; 5948#L15 assume !(0 == ~m); 5946#L18 assume !(0 == ~n); 5941#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 5942#ackermannENTRY ~m := #in~m;~n := #in~n; 5959#L15 assume !(0 == ~m); 5955#L18 assume 0 == ~n; 5950#L19 call #t~ret0 := ackermann(~m - 1, 1);< 5953#ackermannENTRY ~m := #in~m;~n := #in~n; 5962#L15 assume 0 == ~m;#res := 1 + ~n; 5956#ackermannFINAL assume true; 5949#ackermannEXIT >#42#return; 5947#L19-1 #res := #t~ret0;havoc #t~ret0; 5945#ackermannFINAL assume true; 5940#ackermannEXIT >#44#return; 5937#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 5938#ackermannENTRY ~m := #in~m;~n := #in~n; 5943#L15 assume 0 == ~m;#res := 1 + ~n; 5939#ackermannFINAL assume true; 5936#ackermannEXIT >#46#return; 5935#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 5932#ackermannFINAL assume true; 5931#ackermannEXIT >#42#return; 5911#L19-1 #res := #t~ret0;havoc #t~ret0; 5909#ackermannFINAL assume true; 5898#ackermannEXIT >#44#return; 5899#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 5981#ackermannENTRY ~m := #in~m;~n := #in~n; 5988#L15 assume !(0 == ~m); 5989#L18 assume !(0 == ~n); 6011#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 5825#ackermannENTRY ~m := #in~m;~n := #in~n; 6066#L15 assume !(0 == ~m); 6060#L18 assume 0 == ~n; 6056#L19 call #t~ret0 := ackermann(~m - 1, 1);< 5837#ackermannENTRY [2018-11-29 00:02:23,265 INFO L796 eck$LassoCheckResult]: Loop: 5837#ackermannENTRY ~m := #in~m;~n := #in~n; 6061#L15 assume !(0 == ~m); 6062#L18 assume !(0 == ~n); 5836#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 6070#ackermannENTRY ~m := #in~m;~n := #in~n; 6067#L15 assume !(0 == ~m); 6065#L18 assume 0 == ~n; 5835#L19 call #t~ret0 := ackermann(~m - 1, 1);< 5837#ackermannENTRY [2018-11-29 00:02:23,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash -997228084, now seen corresponding path program 3 times [2018-11-29 00:02:23,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:23,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:23,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:23,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:23,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-29 00:02:23,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:23,594 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:23,613 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-29 00:02:23,637 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-29 00:02:23,637 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-29 00:02:23,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-29 00:02:23,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:23,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-29 00:02:23,678 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-29 00:02:23,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 2 times [2018-11-29 00:02:23,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:23,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:23,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:23,679 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:23,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:23,902 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:23,902 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:23,902 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:23,902 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:23,903 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:23,903 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:23,903 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:23,903 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:23,903 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration9_Loop [2018-11-29 00:02:23,903 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:23,904 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:23,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:23,995 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:23,995 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 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 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,014 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,014 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:24,017 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,017 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 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 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,036 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,036 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:24,040 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,040 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:24,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,061 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,070 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,070 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 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 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,092 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,092 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:24,102 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,102 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 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 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,122 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,122 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:24,126 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,126 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=1} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 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 118 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,146 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,146 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:24,149 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,149 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 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 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,170 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,170 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 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 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,195 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:24,195 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:24,207 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,207 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-8} Honda state: {ackermann_#in~m=-8} Generalized eigenvectors: [{ackermann_#in~m=0}, {ackermann_#in~m=0}, {ackermann_#in~m=-1}] Lambdas: [15, 0, 1] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 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 121 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:24,229 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:24,229 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:24,233 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:24,233 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-29 00:02:24,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-29 00:02:24,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-11-29 00:02:24,252 INFO L87 Difference]: Start difference. First operand 293 states and 360 transitions. cyclomatic complexity: 74 Second operand 15 states. [2018-11-29 00:02:25,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:25,013 INFO L93 Difference]: Finished difference Result 301 states and 365 transitions. [2018-11-29 00:02:25,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-29 00:02:25,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 301 states and 365 transitions. [2018-11-29 00:02:25,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:25,021 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 301 states to 297 states and 361 transitions. [2018-11-29 00:02:25,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 236 [2018-11-29 00:02:25,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 236 [2018-11-29 00:02:25,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 361 transitions. [2018-11-29 00:02:25,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:25,022 INFO L705 BuchiCegarLoop]: Abstraction has 297 states and 361 transitions. [2018-11-29 00:02:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 361 transitions. [2018-11-29 00:02:25,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 277. [2018-11-29 00:02:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-11-29 00:02:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 339 transitions. [2018-11-29 00:02:25,047 INFO L728 BuchiCegarLoop]: Abstraction has 277 states and 339 transitions. [2018-11-29 00:02:25,047 INFO L608 BuchiCegarLoop]: Abstraction has 277 states and 339 transitions. [2018-11-29 00:02:25,047 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-29 00:02:25,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 339 transitions. [2018-11-29 00:02:25,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:25,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:25,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:25,055 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [10, 8, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:25,058 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-29 00:02:25,058 INFO L794 eck$LassoCheckResult]: Stem: 6665#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 6625#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 6626#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 6635#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 6636#ackermannENTRY ~m := #in~m;~n := #in~n; 6683#L15 assume !(0 == ~m); 6682#L18 assume 0 == ~n; 6679#L19 call #t~ret0 := ackermann(~m - 1, 1);< 6681#ackermannENTRY ~m := #in~m;~n := #in~n; 6677#L15 assume !(0 == ~m); 6680#L18 assume !(0 == ~n); 6672#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 6675#ackermannENTRY ~m := #in~m;~n := #in~n; 6673#L15 assume !(0 == ~m); 6671#L18 assume 0 == ~n; 6654#L19 call #t~ret0 := ackermann(~m - 1, 1);< 6648#ackermannENTRY ~m := #in~m;~n := #in~n; 6656#L15 assume !(0 == ~m); 6669#L18 assume !(0 == ~n); 6638#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 6722#ackermannENTRY ~m := #in~m;~n := #in~n; 6723#L15 assume !(0 == ~m); 6717#L18 assume 0 == ~n; 6718#L19 call #t~ret0 := ackermann(~m - 1, 1);< 6644#ackermannENTRY ~m := #in~m;~n := #in~n; 6817#L15 assume 0 == ~m;#res := 1 + ~n; 6816#ackermannFINAL assume true; 6814#ackermannEXIT >#42#return; 6813#L19-1 #res := #t~ret0;havoc #t~ret0; 6812#ackermannFINAL assume true; 6809#ackermannEXIT >#44#return; 6807#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 6808#ackermannENTRY ~m := #in~m;~n := #in~n; 6811#L15 assume 0 == ~m;#res := 1 + ~n; 6810#ackermannFINAL assume true; 6806#ackermannEXIT >#46#return; 6805#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 6804#ackermannFINAL assume true; 6747#ackermannEXIT >#42#return; 6742#L19-1 #res := #t~ret0;havoc #t~ret0; 6740#ackermannFINAL assume true; 6729#ackermannEXIT >#44#return; 6628#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 6698#ackermannENTRY ~m := #in~m;~n := #in~n; 6692#L15 assume !(0 == ~m); 6691#L18 assume !(0 == ~n); 6627#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 6629#ackermannENTRY ~m := #in~m;~n := #in~n; 6710#L15 assume !(0 == ~m); 6706#L18 assume !(0 == ~n); 6662#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 6704#ackermannENTRY ~m := #in~m;~n := #in~n; 6702#L15 assume !(0 == ~m); 6703#L18 assume 0 == ~n; 6631#L19 call #t~ret0 := ackermann(~m - 1, 1);< 6716#ackermannENTRY [2018-11-29 00:02:25,058 INFO L796 eck$LassoCheckResult]: Loop: 6716#ackermannENTRY ~m := #in~m;~n := #in~n; 6711#L15 assume !(0 == ~m); 6657#L18 assume !(0 == ~n); 6630#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 6634#ackermannENTRY ~m := #in~m;~n := #in~n; 6700#L15 assume !(0 == ~m); 6699#L18 assume 0 == ~n; 6632#L19 call #t~ret0 := ackermann(~m - 1, 1);< 6716#ackermannENTRY [2018-11-29 00:02:25,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:25,058 INFO L82 PathProgramCache]: Analyzing trace with hash 258460313, now seen corresponding path program 4 times [2018-11-29 00:02:25,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:25,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:25,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:25,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:25,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-29 00:02:25,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:25,285 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:25,296 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-29 00:02:25,316 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-29 00:02:25,316 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-29 00:02:25,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-29 00:02:25,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:25,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-29 00:02:25,359 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-29 00:02:25,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:25,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 3 times [2018-11-29 00:02:25,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:25,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:25,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:25,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:25,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:25,502 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:25,502 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:25,502 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:25,503 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:25,503 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:25,503 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,503 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:25,503 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:25,503 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration10_Loop [2018-11-29 00:02:25,504 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:25,504 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:25,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:25,581 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:25,581 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 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 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,587 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,587 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:25,591 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,591 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 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 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,611 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,611 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:25,614 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,614 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 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 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,634 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,634 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:25,637 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,638 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 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 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,660 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,660 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:25,663 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,663 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:25,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,683 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,686 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,686 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=1} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 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 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,708 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,708 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:25,711 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,711 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 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 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,734 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,734 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:25,736 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,736 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:25,757 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:25,757 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 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 131 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:25,783 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:25,783 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:25,844 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:25,845 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-8} Honda state: {ackermann_#in~m=-8} Generalized eigenvectors: [{ackermann_#in~m=0}, {ackermann_#in~m=-1}, {ackermann_#in~m=0}] Lambdas: [0, 1, 8] Nus: [0, 0] [2018-11-29 00:02:25,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-29 00:02:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-11-29 00:02:25,862 INFO L87 Difference]: Start difference. First operand 277 states and 339 transitions. cyclomatic complexity: 69 Second operand 17 states. [2018-11-29 00:02:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:26,647 INFO L93 Difference]: Finished difference Result 322 states and 390 transitions. [2018-11-29 00:02:26,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-29 00:02:26,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 390 transitions. [2018-11-29 00:02:26,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-29 00:02:26,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 318 states and 386 transitions. [2018-11-29 00:02:26,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 248 [2018-11-29 00:02:26,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2018-11-29 00:02:26,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 318 states and 386 transitions. [2018-11-29 00:02:26,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:26,660 INFO L705 BuchiCegarLoop]: Abstraction has 318 states and 386 transitions. [2018-11-29 00:02:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states and 386 transitions. [2018-11-29 00:02:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 304. [2018-11-29 00:02:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-11-29 00:02:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2018-11-29 00:02:26,670 INFO L728 BuchiCegarLoop]: Abstraction has 304 states and 372 transitions. [2018-11-29 00:02:26,670 INFO L608 BuchiCegarLoop]: Abstraction has 304 states and 372 transitions. [2018-11-29 00:02:26,670 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-29 00:02:26,670 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 304 states and 372 transitions. [2018-11-29 00:02:26,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:26,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:26,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:26,673 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:26,673 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-29 00:02:26,674 INFO L794 eck$LassoCheckResult]: Stem: 7494#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 7456#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 7457#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 7465#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 7466#ackermannENTRY ~m := #in~m;~n := #in~n; 7515#L15 assume !(0 == ~m); 7516#L18 assume 0 == ~n; 7506#L19 call #t~ret0 := ackermann(~m - 1, 1);< 7511#ackermannENTRY ~m := #in~m;~n := #in~n; 7509#L15 assume !(0 == ~m); 7510#L18 assume !(0 == ~n); 7479#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 7508#ackermannENTRY ~m := #in~m;~n := #in~n; 7500#L15 assume !(0 == ~m); 7499#L18 assume 0 == ~n; 7468#L19 call #t~ret0 := ackermann(~m - 1, 1);< 7480#ackermannENTRY ~m := #in~m;~n := #in~n; 7543#L15 assume !(0 == ~m); 7544#L18 assume !(0 == ~n); 7473#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 7540#ackermannENTRY ~m := #in~m;~n := #in~n; 7541#L15 assume !(0 == ~m); 7535#L18 assume 0 == ~n; 7536#L19 call #t~ret0 := ackermann(~m - 1, 1);< 7478#ackermannENTRY ~m := #in~m;~n := #in~n; 7688#L15 assume 0 == ~m;#res := 1 + ~n; 7685#ackermannFINAL assume true; 7678#ackermannEXIT >#42#return; 7677#L19-1 #res := #t~ret0;havoc #t~ret0; 7676#ackermannFINAL assume true; 7675#ackermannEXIT >#44#return; 7641#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 7642#ackermannENTRY ~m := #in~m;~n := #in~n; 7674#L15 assume 0 == ~m;#res := 1 + ~n; 7673#ackermannFINAL assume true; 7640#ackermannEXIT >#46#return; 7637#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 7634#ackermannFINAL assume true; 7625#ackermannEXIT >#42#return; 7626#L19-1 #res := #t~ret0;havoc #t~ret0; 7631#ackermannFINAL assume true; 7572#ackermannEXIT >#44#return; 7459#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 7528#ackermannENTRY ~m := #in~m;~n := #in~n; 7525#L15 assume !(0 == ~m); 7527#L18 assume !(0 == ~n); 7458#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 7460#ackermannENTRY ~m := #in~m;~n := #in~n; 7580#L15 assume !(0 == ~m); 7579#L18 assume !(0 == ~n); 7461#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 7464#ackermannENTRY ~m := #in~m;~n := #in~n; 7482#L15 assume !(0 == ~m); 7496#L18 assume !(0 == ~n); 7547#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 7557#ackermannENTRY ~m := #in~m;~n := #in~n; 7546#L15 assume !(0 == ~m); 7549#L18 assume 0 == ~n; 7487#L19 call #t~ret0 := ackermann(~m - 1, 1);< 7534#ackermannENTRY [2018-11-29 00:02:26,674 INFO L796 eck$LassoCheckResult]: Loop: 7534#ackermannENTRY ~m := #in~m;~n := #in~n; 7530#L15 assume !(0 == ~m); 7486#L18 assume !(0 == ~n); 7490#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 7558#ackermannENTRY ~m := #in~m;~n := #in~n; 7550#L15 assume !(0 == ~m); 7529#L18 assume 0 == ~n; 7489#L19 call #t~ret0 := ackermann(~m - 1, 1);< 7534#ackermannENTRY [2018-11-29 00:02:26,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:26,674 INFO L82 PathProgramCache]: Analyzing trace with hash 807724262, now seen corresponding path program 5 times [2018-11-29 00:02:26,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:26,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:26,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:26,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:26,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:26,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 4 times [2018-11-29 00:02:26,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:26,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:26,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:26,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:26,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:26,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:26,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1221239647, now seen corresponding path program 6 times [2018-11-29 00:02:26,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:26,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:26,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:26,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:26,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 131 proven. 83 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-29 00:02:26,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:26,916 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:26,928 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-29 00:02:26,964 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-11-29 00:02:26,964 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-29 00:02:26,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 128 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-29 00:02:27,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:27,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 18 [2018-11-29 00:02:27,336 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:27,336 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:27,337 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:27,337 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:27,337 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:27,337 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,337 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:27,337 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:27,338 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration11_Loop [2018-11-29 00:02:27,338 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:27,338 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:27,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:27,462 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:27,462 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 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 133 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,467 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,467 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:27,471 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,471 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 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 134 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,492 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,492 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:27,496 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,496 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 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 135 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,518 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,518 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:27,521 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,521 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 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 136 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,541 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,541 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:27,544 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,544 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 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 137 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,565 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,565 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:27,567 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,567 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=1} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 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 138 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,589 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,589 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:27,596 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,596 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:27,617 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,617 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 139 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,622 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,622 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 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 140 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:27,643 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:27,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:27,664 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 141 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:27,678 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:27,678 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-8} Honda state: {ackermann_#in~m=-8} Generalized eigenvectors: [{ackermann_#in~m=0}, {ackermann_#in~m=0}, {ackermann_#in~m=-1}] Lambdas: [15, 0, 1] Nus: [0, 0] [2018-11-29 00:02:27,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-29 00:02:27,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-11-29 00:02:27,696 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. cyclomatic complexity: 75 Second operand 18 states. [2018-11-29 00:02:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:28,197 INFO L93 Difference]: Finished difference Result 341 states and 411 transitions. [2018-11-29 00:02:28,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-29 00:02:28,200 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 411 transitions. [2018-11-29 00:02:28,205 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:28,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 241 states and 286 transitions. [2018-11-29 00:02:28,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 172 [2018-11-29 00:02:28,208 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2018-11-29 00:02:28,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 286 transitions. [2018-11-29 00:02:28,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:28,208 INFO L705 BuchiCegarLoop]: Abstraction has 241 states and 286 transitions. [2018-11-29 00:02:28,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 286 transitions. [2018-11-29 00:02:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-11-29 00:02:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-11-29 00:02:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 286 transitions. [2018-11-29 00:02:28,215 INFO L728 BuchiCegarLoop]: Abstraction has 241 states and 286 transitions. [2018-11-29 00:02:28,215 INFO L608 BuchiCegarLoop]: Abstraction has 241 states and 286 transitions. [2018-11-29 00:02:28,215 INFO L442 BuchiCegarLoop]: ======== Iteration 12============ [2018-11-29 00:02:28,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 241 states and 286 transitions. [2018-11-29 00:02:28,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:28,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:28,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:28,219 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [22, 16, 15, 10, 10, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1] [2018-11-29 00:02:28,219 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-29 00:02:28,220 INFO L794 eck$LassoCheckResult]: Stem: 8379#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 8345#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 8346#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 8353#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 8354#ackermannENTRY ~m := #in~m;~n := #in~n; 8405#L15 assume !(0 == ~m); 8585#L18 assume !(0 == ~n); 8373#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8402#ackermannENTRY ~m := #in~m;~n := #in~n; 8401#L15 assume !(0 == ~m); 8400#L18 assume 0 == ~n; 8397#L19 call #t~ret0 := ackermann(~m - 1, 1);< 8399#ackermannENTRY ~m := #in~m;~n := #in~n; 8396#L15 assume !(0 == ~m); 8398#L18 assume !(0 == ~n); 8365#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8502#ackermannENTRY ~m := #in~m;~n := #in~n; 8571#L15 assume !(0 == ~m); 8389#L18 assume 0 == ~n; 8364#L19 call #t~ret0 := ackermann(~m - 1, 1);< 8366#ackermannENTRY ~m := #in~m;~n := #in~n; 8457#L15 assume !(0 == ~m); 8455#L18 assume !(0 == ~n); 8452#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8453#ackermannENTRY ~m := #in~m;~n := #in~n; 8468#L15 assume !(0 == ~m); 8467#L18 assume 0 == ~n; 8464#L19 call #t~ret0 := ackermann(~m - 1, 1);< 8426#ackermannENTRY ~m := #in~m;~n := #in~n; 8475#L15 assume 0 == ~m;#res := 1 + ~n; 8473#ackermannFINAL assume true; 8463#ackermannEXIT >#42#return; 8460#L19-1 #res := #t~ret0;havoc #t~ret0; 8458#ackermannFINAL assume true; 8451#ackermannEXIT >#44#return; 8439#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 8440#ackermannENTRY ~m := #in~m;~n := #in~n; 8450#L15 assume 0 == ~m;#res := 1 + ~n; 8449#ackermannFINAL assume true; 8438#ackermannEXIT >#46#return; 8434#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 8430#ackermannFINAL assume true; 8416#ackermannEXIT >#42#return; 8418#L19-1 #res := #t~ret0;havoc #t~ret0; 8520#ackermannFINAL assume true; 8501#ackermannEXIT >#44#return; 8445#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 8446#ackermannENTRY ~m := #in~m;~n := #in~n; 8539#L15 assume !(0 == ~m); 8534#L18 assume !(0 == ~n); 8496#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8498#ackermannENTRY ~m := #in~m;~n := #in~n; 8562#L15 assume !(0 == ~m); 8561#L18 assume !(0 == ~n); 8541#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8542#ackermannENTRY ~m := #in~m;~n := #in~n; 8556#L15 assume !(0 == ~m); 8555#L18 assume !(0 == ~n); 8359#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8552#ackermannENTRY ~m := #in~m;~n := #in~n; 8551#L15 assume !(0 == ~m); 8550#L18 assume 0 == ~n; 8413#L19 call #t~ret0 := ackermann(~m - 1, 1);< 8472#ackermannENTRY ~m := #in~m;~n := #in~n; 8474#L15 assume 0 == ~m;#res := 1 + ~n; 8471#ackermannFINAL assume true; 8411#ackermannEXIT >#42#return; 8415#L19-1 #res := #t~ret0;havoc #t~ret0; 8549#ackermannFINAL assume true; 8547#ackermannEXIT >#44#return; 8545#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 8360#ackermannENTRY ~m := #in~m;~n := #in~n; 8565#L15 assume 0 == ~m;#res := 1 + ~n; 8564#ackermannFINAL assume true; 8543#ackermannEXIT >#46#return; 8536#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 8554#ackermannFINAL assume true; 8540#ackermannEXIT >#44#return; 8383#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 8538#ackermannENTRY ~m := #in~m;~n := #in~n; 8380#L15 assume 0 == ~m;#res := 1 + ~n; 8385#ackermannFINAL assume true; 8535#ackermannEXIT >#46#return; 8533#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 8522#ackermannFINAL assume true; 8495#ackermannEXIT >#44#return; 8491#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 8494#ackermannENTRY ~m := #in~m;~n := #in~n; 8512#L15 assume 0 == ~m;#res := 1 + ~n; 8511#ackermannFINAL assume true; 8489#ackermannEXIT >#46#return; 8487#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 8485#ackermannFINAL assume true; 8444#ackermannEXIT >#46#return; 8436#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 8432#ackermannFINAL assume true; 8422#ackermannEXIT >#42#return; 8372#L19-1 #res := #t~ret0;havoc #t~ret0; 8375#ackermannFINAL assume true; 8581#ackermannEXIT >#44#return; 8349#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 8410#ackermannENTRY ~m := #in~m;~n := #in~n; 8408#L15 assume !(0 == ~m); 8409#L18 assume !(0 == ~n); 8347#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8350#ackermannENTRY ~m := #in~m;~n := #in~n; 8370#L15 assume !(0 == ~m); 8386#L18 assume !(0 == ~n); 8351#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8352#ackermannENTRY ~m := #in~m;~n := #in~n; 8371#L15 assume !(0 == ~m); 8575#L18 assume !(0 == ~n); 8427#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8447#ackermannENTRY ~m := #in~m;~n := #in~n; 8437#L15 assume !(0 == ~m); 8433#L18 assume 0 == ~n; 8421#L19 call #t~ret0 := ackermann(~m - 1, 1);< 8429#ackermannENTRY ~m := #in~m;~n := #in~n; 8488#L15 assume !(0 == ~m); 8486#L18 assume !(0 == ~n); 8482#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8484#ackermannENTRY ~m := #in~m;~n := #in~n; 8514#L15 assume !(0 == ~m); 8513#L18 assume 0 == ~n; 8412#L19 call #t~ret0 := ackermann(~m - 1, 1);< 8363#ackermannENTRY [2018-11-29 00:02:28,220 INFO L796 eck$LassoCheckResult]: Loop: 8363#ackermannENTRY ~m := #in~m;~n := #in~n; 8500#L15 assume !(0 == ~m); 8470#L18 assume !(0 == ~n); 8362#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 8466#ackermannENTRY ~m := #in~m;~n := #in~n; 8461#L15 assume !(0 == ~m); 8459#L18 assume 0 == ~n; 8361#L19 call #t~ret0 := ackermann(~m - 1, 1);< 8363#ackermannENTRY [2018-11-29 00:02:28,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:28,220 INFO L82 PathProgramCache]: Analyzing trace with hash 286526941, now seen corresponding path program 7 times [2018-11-29 00:02:28,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:28,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:28,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:28,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:28,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 495 proven. 85 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-29 00:02:28,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:28,777 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:28,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:28,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 495 proven. 85 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-29 00:02:28,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:28,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-29 00:02:28,893 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-29 00:02:28,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:28,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 5 times [2018-11-29 00:02:28,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:28,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:28,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:28,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:28,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:29,077 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-29 00:02:29,255 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-29 00:02:29,447 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-29 00:02:29,572 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-29 00:02:29,679 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:29,679 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:29,679 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:29,679 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:29,679 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:29,680 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,680 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:29,680 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:29,680 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration12_Loop [2018-11-29 00:02:29,680 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:29,680 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:29,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:29,754 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:29,754 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 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 143 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,759 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,759 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:29,762 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,762 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:29,784 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,784 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 144 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,787 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,787 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 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 145 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,807 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,807 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:29,810 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,810 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 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 146 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,831 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,831 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:29,833 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,834 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 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 147 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,854 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,854 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:29,857 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,857 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=1} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 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 148 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,878 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,878 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:29,881 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,881 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 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 149 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,902 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,902 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:29,906 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,906 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 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 150 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,927 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:29,927 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 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 151 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:29,950 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:29,951 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:29,963 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:29,963 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-8} Honda state: {ackermann_#in~m=-8} Generalized eigenvectors: [{ackermann_#in~m=0}, {ackermann_#in~m=0}, {ackermann_#in~m=-1}] Lambdas: [15, 0, 1] Nus: [0, 0] [2018-11-29 00:02:29,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-29 00:02:29,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2018-11-29 00:02:29,981 INFO L87 Difference]: Start difference. First operand 241 states and 286 transitions. cyclomatic complexity: 52 Second operand 25 states. [2018-11-29 00:02:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:31,648 INFO L93 Difference]: Finished difference Result 396 states and 482 transitions. [2018-11-29 00:02:31,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-11-29 00:02:31,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 396 states and 482 transitions. [2018-11-29 00:02:31,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:31,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 396 states to 392 states and 478 transitions. [2018-11-29 00:02:31,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 308 [2018-11-29 00:02:31,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2018-11-29 00:02:31,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 392 states and 478 transitions. [2018-11-29 00:02:31,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:31,665 INFO L705 BuchiCegarLoop]: Abstraction has 392 states and 478 transitions. [2018-11-29 00:02:31,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states and 478 transitions. [2018-11-29 00:02:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 347. [2018-11-29 00:02:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-11-29 00:02:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 420 transitions. [2018-11-29 00:02:31,681 INFO L728 BuchiCegarLoop]: Abstraction has 347 states and 420 transitions. [2018-11-29 00:02:31,681 INFO L608 BuchiCegarLoop]: Abstraction has 347 states and 420 transitions. [2018-11-29 00:02:31,681 INFO L442 BuchiCegarLoop]: ======== Iteration 13============ [2018-11-29 00:02:31,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 347 states and 420 transitions. [2018-11-29 00:02:31,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:31,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:31,688 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:31,693 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [23, 17, 15, 11, 11, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1] [2018-11-29 00:02:31,693 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-29 00:02:31,694 INFO L794 eck$LassoCheckResult]: Stem: 9525#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 9486#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 9487#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 9496#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 9497#ackermannENTRY ~m := #in~m;~n := #in~n; 9551#L15 assume !(0 == ~m); 9552#L18 assume !(0 == ~n); 9545#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9548#ackermannENTRY ~m := #in~m;~n := #in~n; 9547#L15 assume !(0 == ~m); 9546#L18 assume 0 == ~n; 9541#L19 call #t~ret0 := ackermann(~m - 1, 1);< 9543#ackermannENTRY ~m := #in~m;~n := #in~n; 9540#L15 assume !(0 == ~m); 9542#L18 assume !(0 == ~n); 9534#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9538#ackermannENTRY ~m := #in~m;~n := #in~n; 9536#L15 assume !(0 == ~m); 9533#L18 assume 0 == ~n; 9535#L19 call #t~ret0 := ackermann(~m - 1, 1);< 9515#ackermannENTRY ~m := #in~m;~n := #in~n; 9616#L15 assume !(0 == ~m); 9603#L18 assume !(0 == ~n); 9590#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9591#ackermannENTRY ~m := #in~m;~n := #in~n; 9614#L15 assume !(0 == ~m); 9611#L18 assume 0 == ~n; 9600#L19 call #t~ret0 := ackermann(~m - 1, 1);< 9602#ackermannENTRY ~m := #in~m;~n := #in~n; 9606#L15 assume 0 == ~m;#res := 1 + ~n; 9604#ackermannFINAL assume true; 9599#ackermannEXIT >#42#return; 9598#L19-1 #res := #t~ret0;havoc #t~ret0; 9597#ackermannFINAL assume true; 9589#ackermannEXIT >#44#return; 9586#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 9587#ackermannENTRY ~m := #in~m;~n := #in~n; 9596#L15 assume 0 == ~m;#res := 1 + ~n; 9594#ackermannFINAL assume true; 9585#ackermannEXIT >#46#return; 9580#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 9576#ackermannFINAL assume true; 9571#ackermannEXIT >#42#return; 9569#L19-1 #res := #t~ret0;havoc #t~ret0; 9626#ackermannFINAL assume true; 9627#ackermannEXIT >#44#return; 9555#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 9557#ackermannENTRY ~m := #in~m;~n := #in~n; 9554#L15 assume !(0 == ~m); 9556#L18 assume !(0 == ~n); 9750#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9492#ackermannENTRY ~m := #in~m;~n := #in~n; 9772#L15 assume !(0 == ~m); 9769#L18 assume !(0 == ~n); 9767#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9768#ackermannENTRY ~m := #in~m;~n := #in~n; 9789#L15 assume !(0 == ~m); 9788#L18 assume !(0 == ~n); 9505#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9624#ackermannENTRY ~m := #in~m;~n := #in~n; 9623#L15 assume !(0 == ~m); 9622#L18 assume 0 == ~n; 9564#L19 call #t~ret0 := ackermann(~m - 1, 1);< 9574#ackermannENTRY ~m := #in~m;~n := #in~n; 9736#L15 assume 0 == ~m;#res := 1 + ~n; 9613#ackermannFINAL assume true; 9563#ackermannEXIT >#42#return; 9567#L19-1 #res := #t~ret0;havoc #t~ret0; 9786#ackermannFINAL assume true; 9784#ackermannEXIT >#44#return; 9776#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 9782#ackermannENTRY ~m := #in~m;~n := #in~n; 9785#L15 assume 0 == ~m;#res := 1 + ~n; 9783#ackermannFINAL assume true; 9774#ackermannEXIT >#46#return; 9773#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 9771#ackermannFINAL assume true; 9766#ackermannEXIT >#44#return; 9758#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 9764#ackermannENTRY ~m := #in~m;~n := #in~n; 9770#L15 assume 0 == ~m;#res := 1 + ~n; 9765#ackermannFINAL assume true; 9757#ackermannEXIT >#46#return; 9755#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 9754#ackermannFINAL assume true; 9749#ackermannEXIT >#44#return; 9745#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 9747#ackermannENTRY ~m := #in~m;~n := #in~n; 9752#L15 assume 0 == ~m;#res := 1 + ~n; 9748#ackermannFINAL assume true; 9744#ackermannEXIT >#46#return; 9675#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 9628#ackermannFINAL assume true; 9629#ackermannEXIT >#46#return; 9581#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 9577#ackermannFINAL assume true; 9572#ackermannEXIT >#42#return; 9573#L19-1 #res := #t~ret0;havoc #t~ret0; 9655#ackermannFINAL assume true; 9654#ackermannEXIT >#44#return; 9646#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 9650#ackermannENTRY ~m := #in~m;~n := #in~n; 9649#L15 assume !(0 == ~m); 9648#L18 assume !(0 == ~n); 9642#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9645#ackermannENTRY ~m := #in~m;~n := #in~n; 9644#L15 assume !(0 == ~m); 9643#L18 assume !(0 == ~n); 9638#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9641#ackermannENTRY ~m := #in~m;~n := #in~n; 9640#L15 assume !(0 == ~m); 9639#L18 assume !(0 == ~n); 9595#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9636#ackermannENTRY ~m := #in~m;~n := #in~n; 9637#L15 assume !(0 == ~m); 9621#L18 assume !(0 == ~n); 9559#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9592#ackermannENTRY ~m := #in~m;~n := #in~n; 9584#L15 assume !(0 == ~m); 9579#L18 assume 0 == ~n; 9522#L19 call #t~ret0 := ackermann(~m - 1, 1);< 9575#ackermannENTRY ~m := #in~m;~n := #in~n; 9793#L15 assume !(0 == ~m); 9521#L18 assume !(0 == ~n); 9523#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9738#ackermannENTRY ~m := #in~m;~n := #in~n; 9815#L15 assume !(0 == ~m); 9561#L18 assume 0 == ~n; 9562#L19 call #t~ret0 := ackermann(~m - 1, 1);< 9511#ackermannENTRY [2018-11-29 00:02:31,694 INFO L796 eck$LassoCheckResult]: Loop: 9511#ackermannENTRY ~m := #in~m;~n := #in~n; 9612#L15 assume !(0 == ~m); 9610#L18 assume !(0 == ~n); 9510#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 9588#ackermannENTRY ~m := #in~m;~n := #in~n; 9582#L15 assume !(0 == ~m); 9578#L18 assume 0 == ~n; 9509#L19 call #t~ret0 := ackermann(~m - 1, 1);< 9511#ackermannENTRY [2018-11-29 00:02:31,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1393549654, now seen corresponding path program 8 times [2018-11-29 00:02:31,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:31,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:31,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:31,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:31,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 546 proven. 104 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-29 00:02:32,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:32,270 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:32,281 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-29 00:02:32,326 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-29 00:02:32,326 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-29 00:02:32,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 546 proven. 104 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-29 00:02:32,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:32,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-29 00:02:32,379 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-29 00:02:32,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 6 times [2018-11-29 00:02:32,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:32,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:32,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:32,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:32,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:32,517 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:32,517 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:32,518 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:32,518 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:32,518 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:32,518 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,518 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:32,518 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:32,518 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration13_Loop [2018-11-29 00:02:32,519 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:32,519 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:32,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:32,604 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:32,605 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 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 153 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,612 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,612 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:32,615 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,615 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 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 154 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,637 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,638 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:32,640 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,641 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 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 155 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,662 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,662 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:32,669 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,670 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 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 156 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,690 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,691 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:32,693 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,693 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 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 157 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,714 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,714 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:32,717 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,717 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 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 158 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,738 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:32,741 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,741 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=1} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 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 159 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,761 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,762 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 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 160 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,785 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:32,785 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:32,836 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,837 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-8} Honda state: {ackermann_#in~m=-8} Generalized eigenvectors: [{ackermann_#in~m=-1}, {ackermann_#in~m=0}, {ackermann_#in~m=0}] Lambdas: [1, 0, 15] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:32,857 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:32,858 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 161 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:32,860 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:32,861 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-29 00:02:32,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-29 00:02:32,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2018-11-29 00:02:32,879 INFO L87 Difference]: Start difference. First operand 347 states and 420 transitions. cyclomatic complexity: 80 Second operand 27 states. [2018-11-29 00:02:34,843 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-11-29 00:02:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:35,520 INFO L93 Difference]: Finished difference Result 413 states and 501 transitions. [2018-11-29 00:02:35,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-11-29 00:02:35,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 413 states and 501 transitions. [2018-11-29 00:02:35,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-29 00:02:35,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 413 states to 409 states and 497 transitions. [2018-11-29 00:02:35,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 316 [2018-11-29 00:02:35,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 316 [2018-11-29 00:02:35,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 409 states and 497 transitions. [2018-11-29 00:02:35,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:35,534 INFO L705 BuchiCegarLoop]: Abstraction has 409 states and 497 transitions. [2018-11-29 00:02:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 497 transitions. [2018-11-29 00:02:35,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2018-11-29 00:02:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-11-29 00:02:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 473 transitions. [2018-11-29 00:02:35,550 INFO L728 BuchiCegarLoop]: Abstraction has 386 states and 473 transitions. [2018-11-29 00:02:35,550 INFO L608 BuchiCegarLoop]: Abstraction has 386 states and 473 transitions. [2018-11-29 00:02:35,550 INFO L442 BuchiCegarLoop]: ======== Iteration 14============ [2018-11-29 00:02:35,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 386 states and 473 transitions. [2018-11-29 00:02:35,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-29 00:02:35,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:35,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:35,565 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [24, 18, 15, 12, 12, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1] [2018-11-29 00:02:35,565 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-29 00:02:35,566 INFO L794 eck$LassoCheckResult]: Stem: 10811#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 10772#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 10773#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 10783#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 10784#ackermannENTRY ~m := #in~m;~n := #in~n; 10841#L15 assume !(0 == ~m); 10842#L18 assume !(0 == ~n); 10835#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10838#ackermannENTRY ~m := #in~m;~n := #in~n; 10837#L15 assume !(0 == ~m); 10836#L18 assume 0 == ~n; 10831#L19 call #t~ret0 := ackermann(~m - 1, 1);< 10833#ackermannENTRY ~m := #in~m;~n := #in~n; 10830#L15 assume !(0 == ~m); 10832#L18 assume !(0 == ~n); 10823#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10827#ackermannENTRY ~m := #in~m;~n := #in~n; 10828#L15 assume !(0 == ~m); 10822#L18 assume 0 == ~n; 10786#L19 call #t~ret0 := ackermann(~m - 1, 1);< 10796#ackermannENTRY ~m := #in~m;~n := #in~n; 10873#L15 assume !(0 == ~m); 10869#L18 assume !(0 == ~n); 10799#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 11114#ackermannENTRY ~m := #in~m;~n := #in~n; 11124#L15 assume !(0 == ~m); 11123#L18 assume 0 == ~n; 11122#L19 call #t~ret0 := ackermann(~m - 1, 1);< 10793#ackermannENTRY ~m := #in~m;~n := #in~n; 11127#L15 assume 0 == ~m;#res := 1 + ~n; 11126#ackermannFINAL assume true; 11121#ackermannEXIT >#42#return; 11120#L19-1 #res := #t~ret0;havoc #t~ret0; 11119#ackermannFINAL assume true; 11118#ackermannEXIT >#44#return; 11106#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 11107#ackermannENTRY ~m := #in~m;~n := #in~n; 11116#L15 assume 0 == ~m;#res := 1 + ~n; 11115#ackermannFINAL assume true; 11105#ackermannEXIT >#46#return; 11102#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 11099#ackermannFINAL assume true; 11074#ackermannEXIT >#42#return; 11073#L19-1 #res := #t~ret0;havoc #t~ret0; 11072#ackermannFINAL assume true; 11071#ackermannEXIT >#44#return; 10894#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 11067#ackermannENTRY ~m := #in~m;~n := #in~n; 11086#L15 assume !(0 == ~m); 10893#L18 assume !(0 == ~n); 10875#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10883#ackermannENTRY ~m := #in~m;~n := #in~n; 10879#L15 assume !(0 == ~m); 10880#L18 assume !(0 == ~n); 10871#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10874#ackermannENTRY ~m := #in~m;~n := #in~n; 10870#L15 assume !(0 == ~m); 10872#L18 assume !(0 == ~n); 10862#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10865#ackermannENTRY ~m := #in~m;~n := #in~n; 10860#L15 assume !(0 == ~m); 10864#L18 assume 0 == ~n; 11050#L19 call #t~ret0 := ackermann(~m - 1, 1);< 11052#ackermannENTRY ~m := #in~m;~n := #in~n; 11056#L15 assume 0 == ~m;#res := 1 + ~n; 11053#ackermannFINAL assume true; 11049#ackermannEXIT >#42#return; 11047#L19-1 #res := #t~ret0;havoc #t~ret0; 11044#ackermannFINAL assume true; 11042#ackermannEXIT >#44#return; 11034#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 11038#ackermannENTRY ~m := #in~m;~n := #in~n; 11043#L15 assume 0 == ~m;#res := 1 + ~n; 11039#ackermannFINAL assume true; 11030#ackermannEXIT >#46#return; 11037#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 11088#ackermannFINAL assume true; 11087#ackermannEXIT >#44#return; 11016#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 11025#ackermannENTRY ~m := #in~m;~n := #in~n; 11064#L15 assume 0 == ~m;#res := 1 + ~n; 11063#ackermannFINAL assume true; 11014#ackermannEXIT >#46#return; 11021#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 11084#ackermannFINAL assume true; 11081#ackermannEXIT >#44#return; 11077#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 11079#ackermannENTRY ~m := #in~m;~n := #in~n; 11083#L15 assume 0 == ~m;#res := 1 + ~n; 11080#ackermannFINAL assume true; 11076#ackermannEXIT >#46#return; 10921#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 11069#ackermannFINAL assume true; 11065#ackermannEXIT >#46#return; 10912#L21-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 10905#ackermannFINAL assume true; 10903#ackermannEXIT >#42#return; 10901#L19-1 #res := #t~ret0;havoc #t~ret0; 10900#ackermannFINAL assume true; 10899#ackermannEXIT >#44#return; 10775#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 10897#ackermannENTRY ~m := #in~m;~n := #in~n; 10896#L15 assume !(0 == ~m); 10895#L18 assume !(0 == ~n); 10774#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10777#ackermannENTRY ~m := #in~m;~n := #in~n; 10973#L15 assume !(0 == ~m); 10972#L18 assume !(0 == ~n); 10969#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10970#ackermannENTRY ~m := #in~m;~n := #in~n; 10982#L15 assume !(0 == ~m); 10981#L18 assume !(0 == ~n); 10978#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10979#ackermannENTRY ~m := #in~m;~n := #in~n; 10986#L15 assume !(0 == ~m); 10985#L18 assume !(0 == ~n); 10805#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10804#ackermannENTRY ~m := #in~m;~n := #in~n; 10806#L15 assume !(0 == ~m); 11094#L18 assume !(0 == ~n); 10816#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10998#ackermannENTRY ~m := #in~m;~n := #in~n; 10997#L15 assume !(0 == ~m); 10995#L18 assume 0 == ~n; 10787#L19 call #t~ret0 := ackermann(~m - 1, 1);< 10855#ackermannENTRY ~m := #in~m;~n := #in~n; 10853#L15 assume !(0 == ~m); 10854#L18 assume !(0 == ~n); 10798#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 11062#ackermannENTRY ~m := #in~m;~n := #in~n; 11057#L15 assume !(0 == ~m); 11054#L18 assume 0 == ~n; 10780#L19 call #t~ret0 := ackermann(~m - 1, 1);< 10856#ackermannENTRY [2018-11-29 00:02:35,566 INFO L796 eck$LassoCheckResult]: Loop: 10856#ackermannENTRY ~m := #in~m;~n := #in~n; 11055#L15 assume !(0 == ~m); 10807#L18 assume !(0 == ~n); 10778#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 10779#ackermannENTRY ~m := #in~m;~n := #in~n; 11068#L15 assume !(0 == ~m); 10852#L18 assume 0 == ~n; 10782#L19 call #t~ret0 := ackermann(~m - 1, 1);< 10856#ackermannENTRY [2018-11-29 00:02:35,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash -410189577, now seen corresponding path program 9 times [2018-11-29 00:02:35,566 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:35,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:35,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:35,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:35,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:35,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:35,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 7 times [2018-11-29 00:02:35,616 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:35,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:35,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:35,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:35,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:35,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:35,629 INFO L82 PathProgramCache]: Analyzing trace with hash -615721038, now seen corresponding path program 10 times [2018-11-29 00:02:35,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:35,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:35,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:35,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:35,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 527 proven. 279 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2018-11-29 00:02:36,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-29 00:02:36,240 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-29 00:02:36,278 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-29 00:02:36,333 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-29 00:02:36,333 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-29 00:02:36,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 464 proven. 365 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-11-29 00:02:36,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-29 00:02:36,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-29 00:02:36,532 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:36,533 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:36,533 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:36,533 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:36,533 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:36,533 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,533 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:36,534 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:36,534 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration14_Loop [2018-11-29 00:02:36,534 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:36,534 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:36,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:36,613 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:36,613 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 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 163 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,619 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:36,619 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:36,623 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,623 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 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 164 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,645 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:36,645 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:36,649 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,649 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret2=0} Honda state: {ackermann_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:36,671 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:36,672 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 165 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,680 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,680 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 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 166 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,704 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:36,705 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:36,708 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,708 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~n=1} Honda state: {ackermann_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:36,729 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 167 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,730 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:36,733 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,733 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret1=0} Honda state: {ackermann_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 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 168 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,754 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:36,754 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:36,757 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,757 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~n=0} Honda state: {ackermann_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 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 169 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,778 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:36,778 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:36,781 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,782 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 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 170 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,803 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:36,803 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:36,826 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:36,826 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 171 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:36,876 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:36,876 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-5} Honda state: {ackermann_#in~m=-5} Generalized eigenvectors: [{ackermann_#in~m=0}, {ackermann_#in~m=0}, {ackermann_#in~m=-1}] Lambdas: [9, 0, 1] Nus: [0, 0] [2018-11-29 00:02:36,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-29 00:02:36,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-29 00:02:36,895 INFO L87 Difference]: Start difference. First operand 386 states and 473 transitions. cyclomatic complexity: 94 Second operand 11 states. [2018-11-29 00:02:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:37,244 INFO L93 Difference]: Finished difference Result 379 states and 464 transitions. [2018-11-29 00:02:37,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-29 00:02:37,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 379 states and 464 transitions. [2018-11-29 00:02:37,255 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-29 00:02:37,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 379 states to 0 states and 0 transitions. [2018-11-29 00:02:37,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-29 00:02:37,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-29 00:02:37,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-29 00:02:37,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-29 00:02:37,256 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-29 00:02:37,256 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-29 00:02:37,256 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-29 00:02:37,256 INFO L442 BuchiCegarLoop]: ======== Iteration 15============ [2018-11-29 00:02:37,256 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-29 00:02:37,256 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-29 00:02:37,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-29 00:02:37,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 12:02:37 BoogieIcfgContainer [2018-11-29 00:02:37,278 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-29 00:02:37,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-29 00:02:37,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-29 00:02:37,279 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-29 00:02:37,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:01:57" (3/4) ... [2018-11-29 00:02:37,291 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-29 00:02:37,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-29 00:02:37,296 INFO L168 Benchmark]: Toolchain (without parser) took 40359.54 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 464.0 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -230.6 MB). Peak memory consumption was 233.4 MB. Max. memory is 11.5 GB. [2018-11-29 00:02:37,297 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-29 00:02:37,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.24 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. [2018-11-29 00:02:37,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.75 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. [2018-11-29 00:02:37,299 INFO L168 Benchmark]: Boogie Preprocessor took 23.03 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. [2018-11-29 00:02:37,299 INFO L168 Benchmark]: RCFGBuilder took 515.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 68.7 MB). Free memory was 936.6 MB in the beginning and 1.0 GB in the end (delta: -106.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-11-29 00:02:37,299 INFO L168 Benchmark]: BuchiAutomizer took 39466.97 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 395.3 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -135.2 MB). Peak memory consumption was 260.1 MB. Max. memory is 11.5 GB. [2018-11-29 00:02:37,300 INFO L168 Benchmark]: Witness Printer took 11.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-29 00:02:37,305 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.24 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 41.75 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 23.03 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 515.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 68.7 MB). Free memory was 936.6 MB in the beginning and 1.0 GB in the end (delta: -106.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 39466.97 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 395.3 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -135.2 MB). Peak memory consumption was 260.1 MB. Max. memory is 11.5 GB. * Witness Printer took 11.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (10 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function -2 * \old(n) + 1 and consists of 4 locations. One deterministic module has affine ranking function \old(m) and consists of 11 locations. One deterministic module has affine ranking function m and consists of 12 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 25 locations. 10 modules have a trivial ranking function, the largest among these consists of 27 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 39.3s and 15 iterations. TraceHistogramMax:24. Analysis of lassos took 21.8s. Construction of modules took 4.8s. Büchi inclusion checks took 11.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 15. Automata minimization 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 278 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 386 states and ocurred in iteration 13. Nontrivial modules had stage [3, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/21 HoareTripleCheckerStatistics: 413 SDtfs, 734 SDslu, 1218 SDs, 0 SdLazy, 4001 SolverSat, 1128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT2 SILN6 SILU0 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf94 smp95 dnf149 smp100 tf104 neg94 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 216ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 126 LassoNonterminationAnalysisSatUnbounded: 12 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...