./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 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 0.1.23-0cd3be1 [2018-11-28 13:35:57,158 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:35:57,159 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:35:57,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:35:57,167 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:35:57,167 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:35:57,168 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:35:57,170 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:35:57,171 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:35:57,172 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:35:57,172 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:35:57,173 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:35:57,173 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:35:57,174 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:35:57,175 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:35:57,175 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:35:57,176 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:35:57,177 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:35:57,179 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:35:57,180 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:35:57,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:35:57,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:35:57,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:35:57,182 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:35:57,183 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:35:57,183 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:35:57,184 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:35:57,184 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:35:57,185 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:35:57,186 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:35:57,186 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:35:57,187 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:35:57,187 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:35:57,187 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:35:57,188 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:35:57,188 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:35:57,188 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 13:35:57,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:35:57,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:35:57,199 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:35:57,199 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:35:57,199 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:35:57,200 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 13:35:57,200 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 13:35:57,200 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 13:35:57,200 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 13:35:57,200 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 13:35:57,201 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 13:35:57,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:35:57,201 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:35:57,201 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:35:57,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:35:57,201 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:35:57,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:35:57,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 13:35:57,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 13:35:57,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 13:35:57,202 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:35:57,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:35:57,203 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 13:35:57,203 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:35:57,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 13:35:57,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:35:57,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:35:57,204 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 13:35:57,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:35:57,204 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:35:57,204 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 13:35:57,205 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 13:35:57,205 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd82318ec795f8c5ba1d6bd1e94de4995b910941 [2018-11-28 13:35:57,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:35:57,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:35:57,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:35:57,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:35:57,247 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:35:57,248 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c [2018-11-28 13:35:57,304 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/data/8cee5df40/8e11f81b134f4bb8a1f2a979b41fcbec/FLAG24a86180e [2018-11-28 13:35:57,669 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:35:57,669 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/sv-benchmarks/c/recursive/Ackermann02_false-unreach-call_true-no-overflow_true-termination.c [2018-11-28 13:35:57,674 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/data/8cee5df40/8e11f81b134f4bb8a1f2a979b41fcbec/FLAG24a86180e [2018-11-28 13:35:57,685 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/data/8cee5df40/8e11f81b134f4bb8a1f2a979b41fcbec [2018-11-28 13:35:57,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:35:57,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:35:57,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:35:57,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:35:57,693 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:35:57,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28035eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57, skipping insertion in model container [2018-11-28 13:35:57,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:35:57,713 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:35:57,830 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:35:57,833 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:35:57,846 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:35:57,856 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:35:57,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57 WrapperNode [2018-11-28 13:35:57,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:35:57,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:35:57,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:35:57,858 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:35:57,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:35:57,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:35:57,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:35:57,880 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:35:57,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... [2018-11-28 13:35:57,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:35:57,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:35:57,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:35:57,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:35:57,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:57,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:35:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:35:57,978 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2018-11-28 13:35:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2018-11-28 13:35:58,092 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:35:58,093 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 13:35:58,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:35:58 BoogieIcfgContainer [2018-11-28 13:35:58,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:35:58,094 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 13:35:58,094 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 13:35:58,096 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 13:35:58,097 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:35:58,097 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 01:35:57" (1/3) ... [2018-11-28 13:35:58,098 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1898986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:35:58, skipping insertion in model container [2018-11-28 13:35:58,098 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:35:58,098 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:35:57" (2/3) ... [2018-11-28 13:35:58,098 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1898986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:35:58, skipping insertion in model container [2018-11-28 13:35:58,099 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:35:58,099 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:35:58" (3/3) ... [2018-11-28 13:35:58,100 INFO L375 chiAutomizerObserver]: Analyzing ICFG Ackermann02_false-unreach-call_true-no-overflow_true-termination.c [2018-11-28 13:35:58,152 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:35:58,152 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 13:35:58,153 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 13:35:58,153 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 13:35:58,153 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:35:58,153 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:35:58,153 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 13:35:58,153 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:35:58,153 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 13:35:58,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-28 13:35:58,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 13:35:58,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:35:58,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:35:58,193 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 13:35:58,193 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:35:58,194 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 13:35:58,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-28 13:35:58,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 13:35:58,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:35:58,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:35:58,196 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 13:35:58,196 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:35:58,203 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L27true assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 16#L33true assume !(main_~n~0 < 0 || main_~n~0 > 23); 6#L39true call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 11#ackermannENTRYtrue [2018-11-28 13:35:58,203 INFO L796 eck$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 [2018-11-28 13:35:58,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:35:58,208 INFO L82 PathProgramCache]: Analyzing trace with hash 959458, now seen corresponding path program 1 times [2018-11-28 13:35:58,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:35:58,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:35:58,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:58,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:35:58,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:58,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:35:58,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1666510, now seen corresponding path program 1 times [2018-11-28 13:35:58,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:35:58,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:35:58,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:58,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:35:58,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:58,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:35:58,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1317091631, now seen corresponding path program 1 times [2018-11-28 13:35:58,296 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:35:58,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:35:58,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:58,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:35:58,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:58,386 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:35:58,387 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:35:58,387 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:35:58,387 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:35:58,388 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:35:58,388 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,388 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:35:58,388 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:35:58,388 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-28 13:35:58,388 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:35:58,389 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:35:58,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,537 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:35:58,537 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,542 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,543 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,550 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,550 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,575 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,575 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,577 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,577 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,593 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,593 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,596 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,596 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,612 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,612 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,614 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,615 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,630 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,632 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,633 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,648 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,648 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,650 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,650 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,665 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:35:58,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,694 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,694 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,709 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,710 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,713 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,713 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=7} Honda state: {ackermann_#in~m=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-28 13:35:58,766 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:35:58,767 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:35:58,767 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:35:58,767 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:35:58,767 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:35:58,767 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,767 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:35:58,767 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:35:58,767 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Lasso [2018-11-28 13:35:58,767 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:35:58,767 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:35:58,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:58,921 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:35:58,921 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,935 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,935 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,938 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,938 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,958 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,958 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,962 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,962 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:58,982 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:58,982 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:58,985 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:58,985 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,004 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,004 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,022 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:59,022 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,042 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,065 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:35:59,065 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,090 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:35:59,091 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:35:59,092 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:35:59,092 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:35:59,092 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:35:59,092 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:35:59,092 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,092 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:35:59,092 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:35:59,093 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration1_Lasso [2018-11-28 13:35:59,093 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:35:59,093 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:35:59,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,230 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:35:59,236 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:35:59,237 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:35:59,238 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:35:59,239 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:35:59,239 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:35:59,239 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:35:59,239 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:35:59,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:35:59,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:35:59,245 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:35:59,245 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:35:59,246 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:35:59,246 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:35:59,246 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:35:59,246 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:35:59,247 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:35:59,247 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:35:59,247 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:35:59,248 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:35:59,248 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:35:59,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:35:59,249 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:35:59,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:35:59,249 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:35:59,250 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:35:59,250 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:35:59,250 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:35:59,251 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:35:59,252 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:35:59,252 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:35:59,252 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:35:59,253 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:35:59,253 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:35:59,253 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:35:59,253 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:35:59,253 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:35:59,254 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:35:59,255 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:35:59,255 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:35:59,255 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:35:59,256 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 13:35:59,256 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:35:59,263 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 13:35:59,263 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 13:35:59,356 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:35:59,381 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-28 13:35:59,381 INFO L444 ModelExtractionUtils]: 4 out of 11 variables were initially zero. Simplification set additionally 4 variables to zero. [2018-11-28 13:35:59,383 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:35:59,387 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-28 13:35:59,388 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:35:59,388 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~n) = 1*ackermann_#in~n Supporting invariants [1*ackermann_#in~n >= 0] [2018-11-28 13:35:59,399 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 13:35:59,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:35:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:35:59,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:35:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:35:59,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:35:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:35:59,506 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 [2018-11-28 13:35:59,507 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 5 states. [2018-11-28 13:35:59,621 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. [2018-11-28 13:35:59,622 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 [2018-11-28 13:35:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 13:35:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2018-11-28 13:35:59,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 13:35:59,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:35:59,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 13:35:59,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:35:59,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-28 13:35:59,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:35:59,628 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2018-11-28 13:35:59,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 13:35:59,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 30 states and 41 transitions. [2018-11-28 13:35:59,640 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2018-11-28 13:35:59,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-28 13:35:59,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 41 transitions. [2018-11-28 13:35:59,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:35:59,643 INFO L705 BuchiCegarLoop]: Abstraction has 30 states and 41 transitions. [2018-11-28 13:35:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 41 transitions. [2018-11-28 13:35:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-11-28 13:35:59,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 13:35:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-11-28 13:35:59,667 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-28 13:35:59,667 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-11-28 13:35:59,668 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 13:35:59,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-11-28 13:35:59,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 13:35:59,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:35:59,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:35:59,670 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:35:59,670 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:35:59,670 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 140#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 141#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 148#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 150#ackermannENTRY ~m := #in~m;~n := #in~n; 154#L15 assume !(0 == ~m); 165#L18 assume 0 == ~n; 143#L19 call #t~ret0 := ackermann(~m - 1, 1);< 146#ackermannENTRY [2018-11-28 13:35:59,670 INFO L796 eck$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 [2018-11-28 13:35:59,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:35:59,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1317091536, now seen corresponding path program 1 times [2018-11-28 13:35:59,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:35:59,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:35:59,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:59,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:35:59,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:59,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:35:59,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1666415, now seen corresponding path program 1 times [2018-11-28 13:35:59,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:35:59,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:35:59,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:59,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:35:59,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:35:59,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:35:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1185130174, now seen corresponding path program 2 times [2018-11-28 13:35:59,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:35:59,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:35:59,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:59,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:35:59,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:35:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:35:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:35:59,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:35:59,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:35:59,774 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:35:59,774 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:35:59,774 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:35:59,774 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:35:59,774 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:35:59,774 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,775 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:35:59,775 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:35:59,775 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-28 13:35:59,775 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:35:59,775 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:35:59,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:35:59,850 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:35:59,850 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,852 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,852 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,855 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:59,855 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,874 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,874 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,876 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:59,876 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,895 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,895 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,897 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:59,897 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,916 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,916 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,919 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:59,919 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,937 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,937 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,939 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:35:59,940 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:35:59,958 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:35:59,958 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:35:59,979 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:35:59,979 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:35:59,983 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:36:00,001 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:00,002 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:00,002 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:00,002 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:00,002 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:36:00,002 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:00,002 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:00,002 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:00,002 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-28 13:36:00,002 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:00,002 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:00,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,054 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:00,054 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:36:00,054 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:00,055 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:00,055 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:00,055 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:00,055 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:00,055 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:00,056 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:00,056 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:00,056 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:00,057 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:00,057 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:00,057 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:00,057 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:00,057 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:00,057 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:00,057 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:00,057 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:00,058 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:00,058 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:00,058 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:00,058 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:00,059 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:00,059 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:00,059 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:00,059 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:00,059 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:00,060 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:00,060 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:00,060 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:00,060 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:00,060 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:00,061 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:00,061 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:00,061 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:00,061 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:00,061 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:00,062 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 [2018-11-28 13:36:00,062 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:00,062 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:00,063 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:00,063 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:00,063 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:00,063 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:00,063 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:00,064 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:00,064 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:00,064 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:00,065 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:00,065 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:00,065 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:00,065 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:00,065 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:00,065 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:00,066 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:00,066 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:00,067 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:00,067 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:00,067 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:00,067 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:00,067 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:00,068 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:00,068 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:00,070 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:36:00,071 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:36:00,072 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:36:00,072 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:36:00,072 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:36:00,072 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:36:00,072 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~n) = -2*ackermann_#in~n + 1 Supporting invariants [] [2018-11-28 13:36:00,073 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:36:00,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:00,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:00,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:00,143 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:36:00,143 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 10 Second operand 4 states. [2018-11-28 13:36:00,224 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. [2018-11-28 13:36:00,226 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 [2018-11-28 13:36:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:36:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2018-11-28 13:36:00,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 13:36:00,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:00,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-28 13:36:00,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:00,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-28 13:36:00,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:00,229 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 85 transitions. [2018-11-28 13:36:00,235 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-28 13:36:00,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 53 states and 77 transitions. [2018-11-28 13:36:00,237 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-28 13:36:00,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-28 13:36:00,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 77 transitions. [2018-11-28 13:36:00,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:00,239 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 77 transitions. [2018-11-28 13:36:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 77 transitions. [2018-11-28 13:36:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-11-28 13:36:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 13:36:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2018-11-28 13:36:00,246 INFO L728 BuchiCegarLoop]: Abstraction has 47 states and 67 transitions. [2018-11-28 13:36:00,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:36:00,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:36:00,251 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 4 states. [2018-11-28 13:36:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:00,302 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-11-28 13:36:00,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:36:00,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2018-11-28 13:36:00,304 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-28 13:36:00,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 48 states and 66 transitions. [2018-11-28 13:36:00,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-28 13:36:00,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2018-11-28 13:36:00,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 66 transitions. [2018-11-28 13:36:00,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:00,306 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 66 transitions. [2018-11-28 13:36:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 66 transitions. [2018-11-28 13:36:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-11-28 13:36:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 13:36:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2018-11-28 13:36:00,311 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 58 transitions. [2018-11-28 13:36:00,311 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 58 transitions. [2018-11-28 13:36:00,311 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 13:36:00,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 58 transitions. [2018-11-28 13:36:00,312 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-28 13:36:00,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:00,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:00,312 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:00,313 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-28 13:36:00,313 INFO L794 eck$LassoCheckResult]: Stem: 423#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 398#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 399#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 406#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 408#ackermannENTRY ~m := #in~m;~n := #in~n; 427#L15 assume !(0 == ~m); 429#L18 assume 0 == ~n; 413#L19 call #t~ret0 := ackermann(~m - 1, 1);< 414#ackermannENTRY [2018-11-28 13:36:00,313 INFO L796 eck$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 [2018-11-28 13:36:00,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:00,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1317091536, now seen corresponding path program 3 times [2018-11-28 13:36:00,313 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:00,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:00,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:00,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:00,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:00,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 1 times [2018-11-28 13:36:00,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:00,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:00,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:00,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:00,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:00,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:00,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1880893067, now seen corresponding path program 1 times [2018-11-28 13:36:00,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:00,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:00,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:00,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:00,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:00,432 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:00,432 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:00,432 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:00,432 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:00,432 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:00,432 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:00,432 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:00,432 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:00,432 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-28 13:36:00,432 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:00,432 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:00,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,491 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:00,491 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,494 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,494 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,498 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,498 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,516 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,516 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,518 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,518 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,537 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,537 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,539 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,539 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,558 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,558 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,561 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,561 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,580 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,580 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,582 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,582 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,601 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,601 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,603 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,603 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,622 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,622 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,624 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,624 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,643 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:00,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,677 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,677 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] [2018-11-28 13:36:00,769 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:00,769 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:00,769 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:00,769 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:00,769 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:00,769 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:00,769 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:00,769 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:00,770 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Lasso [2018-11-28 13:36:00,770 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:00,770 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:00,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:00,850 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:00,851 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,853 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,853 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,855 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,855 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,874 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,874 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,877 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,877 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,895 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,896 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,898 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,898 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,918 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,920 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,920 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,939 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,939 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,941 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,941 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,959 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,961 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,962 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:00,980 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:00,980 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:00,982 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:00,982 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,001 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,001 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,004 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,004 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,026 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,027 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,028 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,029 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,047 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,047 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,049 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,049 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,067 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,067 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,069 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,069 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,087 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,087 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,089 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,089 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,107 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,109 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,109 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,127 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,128 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,130 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,130 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,148 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,148 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,168 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:01,169 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,189 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:36:01,190 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:01,190 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:01,190 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:01,190 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:01,190 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:36:01,190 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:01,190 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:01,190 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:01,190 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration3_Lasso [2018-11-28 13:36:01,190 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:01,190 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:01,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,285 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:01,285 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:36:01,285 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,286 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,286 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,286 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,286 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,287 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,287 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,287 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,288 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,288 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,289 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,289 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,289 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,289 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,289 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,290 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,290 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,291 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,291 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,291 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,292 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,292 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,292 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,293 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:36:01,293 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:36:01,299 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,300 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,300 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,300 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,301 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,301 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,301 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,302 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,302 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,302 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,303 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,303 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,303 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,303 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,303 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,303 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,304 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,304 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,304 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,304 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,305 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,305 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,305 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,305 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,305 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,305 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,305 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,306 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,306 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,306 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,306 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,306 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,307 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,307 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,307 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,307 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,307 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,307 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,308 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,308 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,308 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,308 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,308 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,308 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,308 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,308 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,309 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 [2018-11-28 13:36:01,309 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,309 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,309 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,309 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,309 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,310 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,310 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,310 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,310 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,311 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,311 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,311 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,311 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,311 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,311 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,311 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,312 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,312 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,312 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,312 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,312 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,313 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,313 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,313 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,313 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,314 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,314 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 [2018-11-28 13:36:01,315 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,315 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:01,315 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,315 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:01,315 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,315 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:01,316 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:01,316 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:01,316 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:01,317 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:01,317 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:01,317 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 13:36:01,317 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:01,320 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 13:36:01,320 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 13:36:01,347 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:36:01,372 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2018-11-28 13:36:01,372 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 5 variables to zero. [2018-11-28 13:36:01,372 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:36:01,375 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-28 13:36:01,376 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:36:01,376 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~m) = 1*ackermann_#in~m Supporting invariants [1*ackermann_#in~m >= 0] [2018-11-28 13:36:01,382 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 13:36:01,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:01,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:01,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:36:01,510 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 [2018-11-28 13:36:01,510 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 58 transitions. cyclomatic complexity: 19 Second operand 9 states. [2018-11-28 13:36:01,672 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. [2018-11-28 13:36:01,673 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 [2018-11-28 13:36:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-28 13:36:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 52 transitions. [2018-11-28 13:36:01,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-28 13:36:01,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:01,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 16 letters. Loop has 8 letters. [2018-11-28 13:36:01,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:01,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 8 letters. Loop has 16 letters. [2018-11-28 13:36:01,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:01,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 195 transitions. [2018-11-28 13:36:01,679 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2018-11-28 13:36:01,682 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 85 states and 119 transitions. [2018-11-28 13:36:01,682 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2018-11-28 13:36:01,682 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2018-11-28 13:36:01,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 119 transitions. [2018-11-28 13:36:01,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:01,683 INFO L705 BuchiCegarLoop]: Abstraction has 85 states and 119 transitions. [2018-11-28 13:36:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 119 transitions. [2018-11-28 13:36:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 69. [2018-11-28 13:36:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-28 13:36:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 98 transitions. [2018-11-28 13:36:01,690 INFO L728 BuchiCegarLoop]: Abstraction has 69 states and 98 transitions. [2018-11-28 13:36:01,690 INFO L608 BuchiCegarLoop]: Abstraction has 69 states and 98 transitions. [2018-11-28 13:36:01,690 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 13:36:01,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 98 transitions. [2018-11-28 13:36:01,691 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2018-11-28 13:36:01,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:01,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:01,691 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:01,691 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:36:01,691 INFO L794 eck$LassoCheckResult]: Stem: 733#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 701#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 702#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 710#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 711#ackermannENTRY ~m := #in~m;~n := #in~n; 765#L15 assume !(0 == ~m); 768#L18 assume 0 == ~n; 706#L19 call #t~ret0 := ackermann(~m - 1, 1);< 714#ackermannENTRY ~m := #in~m;~n := #in~n; 746#L15 assume !(0 == ~m); 731#L18 [2018-11-28 13:36:01,691 INFO L796 eck$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 [2018-11-28 13:36:01,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1290385452, now seen corresponding path program 4 times [2018-11-28 13:36:01,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:01,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:01,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:01,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:01,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:01,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:01,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1978510, now seen corresponding path program 2 times [2018-11-28 13:36:01,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:01,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:01,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:01,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:01,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:01,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:01,703 INFO L82 PathProgramCache]: Analyzing trace with hash 743855841, now seen corresponding path program 2 times [2018-11-28 13:36:01,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:01,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:01,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:01,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:01,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:01,761 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:01,761 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:01,761 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:01,761 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:01,761 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:01,761 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:01,761 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:01,761 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:01,761 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-28 13:36:01,761 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:01,761 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:01,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:01,837 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:01,837 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,847 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,847 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,849 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,849 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,869 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,869 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:01,879 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:01,879 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,910 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:01,910 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:01,935 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:01,935 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,239 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,240 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,259 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,259 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,261 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,261 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:02,279 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,279 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,281 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,281 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:02,300 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,300 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,304 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,304 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: [] [2018-11-28 13:36:02,454 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:02,454 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:02,454 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:02,454 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:02,454 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:02,454 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:02,454 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:02,454 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:02,454 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Lasso [2018-11-28 13:36:02,455 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:02,455 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:02,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,560 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:02,560 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,564 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,564 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,567 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,567 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,585 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,585 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,590 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,590 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,608 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,608 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,611 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,611 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,628 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,629 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,631 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,631 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,649 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,652 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,652 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,670 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,670 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,673 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,673 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,691 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,693 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,693 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,712 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,712 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,716 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,716 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,734 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,734 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,736 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:02,736 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,755 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:02,755 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:02,775 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:02,775 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:02,917 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:36:02,918 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:02,918 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:02,919 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:02,919 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:02,919 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:36:02,919 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:02,919 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:02,919 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:02,919 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration4_Lasso [2018-11-28 13:36:02,919 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:02,919 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:02,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:02,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,040 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:03,041 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:36:03,041 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:03,041 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,041 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,041 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,041 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,042 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,042 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,042 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,042 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,043 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 [2018-11-28 13:36:03,043 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,043 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,043 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,043 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,043 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,044 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,044 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,044 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,045 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 [2018-11-28 13:36:03,045 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,045 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,045 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,045 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,045 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,046 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,046 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,047 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,047 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 [2018-11-28 13:36:03,047 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,047 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,048 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,048 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,048 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,048 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,048 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,049 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,049 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:03,050 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,050 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,050 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,050 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,050 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,051 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,051 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,051 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,052 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:03,052 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,052 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,052 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,053 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,053 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,053 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,053 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,054 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,054 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:03,055 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,055 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,055 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 13:36:03,055 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,059 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 13:36:03,059 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 13:36:03,076 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,076 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:03,076 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,077 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,077 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,077 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,077 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,078 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,078 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,079 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,079 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:03,079 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,079 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:03,080 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,080 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:03,080 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,080 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:03,080 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:03,081 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:03,081 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:03,082 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:03,082 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:03,082 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 13:36:03,082 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:03,085 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 13:36:03,085 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 13:36:03,115 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:36:03,130 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 13:36:03,131 INFO L444 ModelExtractionUtils]: 11 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 13:36:03,131 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:36:03,132 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-28 13:36:03,133 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:36:03,133 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_~n) = 1*ackermann_~n Supporting invariants [1*ackermann_~n >= 0] [2018-11-28 13:36:03,163 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 13:36:03,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:03,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:03,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:03,269 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 [2018-11-28 13:36:03,269 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34 Second operand 7 states. [2018-11-28 13:36:03,289 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. [2018-11-28 13:36:03,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:36:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 13:36:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-28 13:36:03,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-28 13:36:03,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:03,291 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:36:03,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:03,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:03,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:03,363 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 [2018-11-28 13:36:03,363 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34 Second operand 7 states. [2018-11-28 13:36:03,380 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. [2018-11-28 13:36:03,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 13:36:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 13:36:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-28 13:36:03,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-28 13:36:03,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:03,381 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:36:03,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:03,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:03,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:03,457 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 [2018-11-28 13:36:03,458 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 98 transitions. cyclomatic complexity: 34 Second operand 7 states. [2018-11-28 13:36:03,535 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. [2018-11-28 13:36:03,536 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 [2018-11-28 13:36:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 13:36:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2018-11-28 13:36:03,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-28 13:36:03,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:03,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-28 13:36:03,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:03,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-28 13:36:03,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:03,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 141 states and 191 transitions. [2018-11-28 13:36:03,539 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2018-11-28 13:36:03,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 141 states to 98 states and 142 transitions. [2018-11-28 13:36:03,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-11-28 13:36:03,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2018-11-28 13:36:03,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 142 transitions. [2018-11-28 13:36:03,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:03,542 INFO L705 BuchiCegarLoop]: Abstraction has 98 states and 142 transitions. [2018-11-28 13:36:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 142 transitions. [2018-11-28 13:36:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2018-11-28 13:36:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-28 13:36:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2018-11-28 13:36:03,548 INFO L728 BuchiCegarLoop]: Abstraction has 96 states and 138 transitions. [2018-11-28 13:36:03,548 INFO L608 BuchiCegarLoop]: Abstraction has 96 states and 138 transitions. [2018-11-28 13:36:03,548 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 13:36:03,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 138 transitions. [2018-11-28 13:36:03,549 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2018-11-28 13:36:03,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:03,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:03,550 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:03,550 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:36:03,550 INFO L794 eck$LassoCheckResult]: Stem: 1316#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet3;havoc main_#t~nondet3; 1278#L27 assume !(main_~m~0 < 0 || main_~m~0 > 3);main_~n~0 := main_#t~nondet4;havoc main_#t~nondet4; 1279#L33 assume !(main_~n~0 < 0 || main_~n~0 > 23); 1285#L39 call main_#t~ret5 := ackermann(main_~m~0, main_~n~0);< 1287#ackermannENTRY ~m := #in~m;~n := #in~n; 1296#L15 assume !(0 == ~m); 1373#L18 assume !(0 == ~n); 1284#L21 call #t~ret1 := ackermann(~m, ~n - 1);< 1286#ackermannENTRY ~m := #in~m;~n := #in~n; 1299#L15 assume 0 == ~m;#res := 1 + ~n; 1319#ackermannFINAL assume true; 1320#ackermannEXIT >#44#return; 1281#L21-1 call #t~ret2 := ackermann(~m - 1, #t~ret1);< 1283#ackermannENTRY [2018-11-28 13:36:03,550 INFO L796 eck$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 [2018-11-28 13:36:03,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,551 INFO L82 PathProgramCache]: Analyzing trace with hash 804076149, now seen corresponding path program 1 times [2018-11-28 13:36:03,551 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:03,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:03,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:03,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:36:03,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:36:03,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:36:03,582 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:36:03,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1666510, now seen corresponding path program 3 times [2018-11-28 13:36:03,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:03,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:03,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:03,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:03,613 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:03,613 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:03,613 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:03,613 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:03,613 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:03,613 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:03,613 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:03,614 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:03,614 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-28 13:36:03,614 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:03,614 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:03,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:03,663 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:03,663 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,667 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,667 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,685 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,685 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,687 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,687 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,705 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,705 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,707 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,707 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,725 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,725 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,728 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,728 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,746 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,746 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,766 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:03,766 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,776 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,776 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,795 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,795 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,798 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,798 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,816 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,816 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,818 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,818 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:03,837 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:03,837 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:03,840 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:03,840 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#t~ret0=0} Honda state: {ackermann_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-28 13:36:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:36:03,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:36:03,856 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. cyclomatic complexity: 46 Second operand 5 states. [2018-11-28 13:36:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:03,889 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2018-11-28 13:36:03,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:36:03,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 122 transitions. [2018-11-28 13:36:03,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2018-11-28 13:36:03,893 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 85 states and 116 transitions. [2018-11-28 13:36:03,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2018-11-28 13:36:03,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-28 13:36:03,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 116 transitions. [2018-11-28 13:36:03,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:03,893 INFO L705 BuchiCegarLoop]: Abstraction has 85 states and 116 transitions. [2018-11-28 13:36:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 116 transitions. [2018-11-28 13:36:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2018-11-28 13:36:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-28 13:36:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2018-11-28 13:36:03,900 INFO L728 BuchiCegarLoop]: Abstraction has 82 states and 112 transitions. [2018-11-28 13:36:03,900 INFO L608 BuchiCegarLoop]: Abstraction has 82 states and 112 transitions. [2018-11-28 13:36:03,900 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 13:36:03,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 112 transitions. [2018-11-28 13:36:03,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2018-11-28 13:36:03,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:03,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:03,907 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:03,907 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:03,907 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 [2018-11-28 13:36:03,907 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 [2018-11-28 13:36:03,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1914958677, now seen corresponding path program 1 times [2018-11-28 13:36:03,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:03,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:03,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:03,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:03,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,921 INFO L82 PathProgramCache]: Analyzing trace with hash -190850389, now seen corresponding path program 1 times [2018-11-28 13:36:03,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:03,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:03,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:03,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:03,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1249696767, now seen corresponding path program 1 times [2018-11-28 13:36:03,933 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:03,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:03,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:03,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 48 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 13:36:04,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:04,039 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:04,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:04,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-28 13:36:04,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:04,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2018-11-28 13:36:04,367 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:04,368 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:04,368 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:04,368 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:04,368 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:04,368 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:04,368 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:04,368 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:04,368 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration6_Loop [2018-11-28 13:36:04,368 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:04,368 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:04,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:04,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:04,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:04,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:04,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:04,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:04,422 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:04,422 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 77 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 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:04,426 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:04,426 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:04,434 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:04,434 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:04,463 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:04,463 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:04,484 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:04,485 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:05,211 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:36:05,213 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:05,213 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:05,213 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:05,213 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:05,213 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:36:05,213 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:05,213 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:05,213 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:05,213 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration6_Loop [2018-11-28 13:36:05,213 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:05,213 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:05,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:05,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:05,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:05,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:05,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:05,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:05,270 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:05,270 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:36:05,271 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 [2018-11-28 13:36:05,271 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:05,271 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:05,272 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:05,272 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:05,272 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:05,272 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:05,272 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:05,273 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:05,274 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:05,274 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:05,274 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:05,274 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:05,274 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:05,274 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:05,275 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:05,275 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:05,275 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:05,276 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:05,276 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:05,276 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:05,276 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:05,276 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:05,276 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:05,277 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:05,277 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:05,278 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:05,278 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:05,279 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:05,279 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:05,279 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:05,279 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:05,279 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:05,279 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:05,280 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:05,281 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:36:05,282 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:36:05,283 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:36:05,283 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:36:05,283 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:36:05,283 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:36:05,283 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_~m) = 1*ackermann_~m Supporting invariants [] [2018-11-28 13:36:05,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:36:05,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:05,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:05,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:36:05,414 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 [2018-11-28 13:36:05,414 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 112 transitions. cyclomatic complexity: 33 Second operand 11 states. [2018-11-28 13:36:05,566 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. [2018-11-28 13:36:05,567 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 [2018-11-28 13:36:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-28 13:36:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 31 transitions. [2018-11-28 13:36:05,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 23 letters. Loop has 20 letters. [2018-11-28 13:36:05,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:05,568 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:36:05,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:05,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:05,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:36:05,690 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 [2018-11-28 13:36:05,690 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 112 transitions. cyclomatic complexity: 33 Second operand 11 states. [2018-11-28 13:36:05,976 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. [2018-11-28 13:36:05,977 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 [2018-11-28 13:36:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-28 13:36:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 44 transitions. [2018-11-28 13:36:05,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 23 letters. Loop has 20 letters. [2018-11-28 13:36:05,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:05,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 43 letters. Loop has 20 letters. [2018-11-28 13:36:05,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:05,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 23 letters. Loop has 40 letters. [2018-11-28 13:36:05,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:05,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 288 states and 426 transitions. [2018-11-28 13:36:05,987 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 47 [2018-11-28 13:36:05,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 288 states to 227 states and 351 transitions. [2018-11-28 13:36:05,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 128 [2018-11-28 13:36:05,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 130 [2018-11-28 13:36:05,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 227 states and 351 transitions. [2018-11-28 13:36:05,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:05,996 INFO L705 BuchiCegarLoop]: Abstraction has 227 states and 351 transitions. [2018-11-28 13:36:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states and 351 transitions. [2018-11-28 13:36:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 212. [2018-11-28 13:36:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-11-28 13:36:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 327 transitions. [2018-11-28 13:36:06,018 INFO L728 BuchiCegarLoop]: Abstraction has 212 states and 327 transitions. [2018-11-28 13:36:06,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 13:36:06,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2018-11-28 13:36:06,019 INFO L87 Difference]: Start difference. First operand 212 states and 327 transitions. Second operand 21 states. [2018-11-28 13:36:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:06,964 INFO L93 Difference]: Finished difference Result 458 states and 602 transitions. [2018-11-28 13:36:06,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-28 13:36:06,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 458 states and 602 transitions. [2018-11-28 13:36:06,971 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 49 [2018-11-28 13:36:06,976 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 458 states to 410 states and 537 transitions. [2018-11-28 13:36:06,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2018-11-28 13:36:06,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 310 [2018-11-28 13:36:06,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 537 transitions. [2018-11-28 13:36:06,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:06,977 INFO L705 BuchiCegarLoop]: Abstraction has 410 states and 537 transitions. [2018-11-28 13:36:06,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 537 transitions. [2018-11-28 13:36:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 341. [2018-11-28 13:36:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-11-28 13:36:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2018-11-28 13:36:06,999 INFO L728 BuchiCegarLoop]: Abstraction has 341 states and 462 transitions. [2018-11-28 13:36:06,999 INFO L608 BuchiCegarLoop]: Abstraction has 341 states and 462 transitions. [2018-11-28 13:36:06,999 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 13:36:06,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 341 states and 462 transitions. [2018-11-28 13:36:07,001 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 34 [2018-11-28 13:36:07,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:07,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:07,002 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:07,002 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:36:07,002 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 [2018-11-28 13:36:07,003 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 [2018-11-28 13:36:07,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:07,003 INFO L82 PathProgramCache]: Analyzing trace with hash 229970726, now seen corresponding path program 2 times [2018-11-28 13:36:07,003 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:07,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:07,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:07,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 13:36:07,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:07,064 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,073 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:36:07,082 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:36:07,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:07,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 13:36:07,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:07,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:36:07,113 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:36:07,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:07,113 INFO L82 PathProgramCache]: Analyzing trace with hash 2228500, now seen corresponding path program 4 times [2018-11-28 13:36:07,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:07,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:07,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:07,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,149 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:07,150 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:07,150 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:07,150 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:07,150 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:07,150 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:07,150 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:07,150 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:07,150 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration7_Loop [2018-11-28 13:36:07,150 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:07,150 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:07,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,217 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:07,217 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,222 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,222 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,225 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,225 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,242 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,243 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,245 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,245 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,263 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,263 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,265 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,265 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,283 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,283 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,286 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,286 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,304 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,304 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,308 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,308 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,327 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,327 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:07,351 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,526 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,526 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] [2018-11-28 13:36:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:36:07,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:36:07,544 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. cyclomatic complexity: 134 Second operand 7 states. [2018-11-28 13:36:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:07,604 INFO L93 Difference]: Finished difference Result 255 states and 320 transitions. [2018-11-28 13:36:07,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:36:07,604 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 255 states and 320 transitions. [2018-11-28 13:36:07,610 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2018-11-28 13:36:07,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 255 states to 229 states and 287 transitions. [2018-11-28 13:36:07,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2018-11-28 13:36:07,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2018-11-28 13:36:07,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 287 transitions. [2018-11-28 13:36:07,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:07,614 INFO L705 BuchiCegarLoop]: Abstraction has 229 states and 287 transitions. [2018-11-28 13:36:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 287 transitions. [2018-11-28 13:36:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 212. [2018-11-28 13:36:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-11-28 13:36:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 268 transitions. [2018-11-28 13:36:07,623 INFO L728 BuchiCegarLoop]: Abstraction has 212 states and 268 transitions. [2018-11-28 13:36:07,623 INFO L608 BuchiCegarLoop]: Abstraction has 212 states and 268 transitions. [2018-11-28 13:36:07,623 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 13:36:07,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 212 states and 268 transitions. [2018-11-28 13:36:07,625 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2018-11-28 13:36:07,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:07,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:07,626 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [8, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:07,626 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:36:07,627 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 [2018-11-28 13:36:07,627 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 [2018-11-28 13:36:07,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:07,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2042677982, now seen corresponding path program 1 times [2018-11-28 13:36:07,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:07,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1666510, now seen corresponding path program 5 times [2018-11-28 13:36:07,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:07,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:07,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:07,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:07,647 INFO L82 PathProgramCache]: Analyzing trace with hash -997227989, now seen corresponding path program 2 times [2018-11-28 13:36:07,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:07,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:07,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:07,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:07,708 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:07,708 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:07,708 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:07,708 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:07,708 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:07,708 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:07,709 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:07,709 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:07,709 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration8_Loop [2018-11-28 13:36:07,709 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:07,709 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:07,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:07,779 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:07,779 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,781 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,781 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,783 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,784 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,813 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,813 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,856 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:07,856 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,867 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,867 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,885 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,885 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,887 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,887 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,906 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,906 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,909 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,909 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,938 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,939 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,941 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,941 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,972 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,972 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,974 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,974 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:07,993 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:07,994 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:07,996 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:07,996 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,014 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,014 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,017 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,017 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#in~m=-1} Honda state: {ackermann_#in~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-28 13:36:08,420 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:08,420 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:08,420 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:08,420 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:08,420 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:08,420 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:08,420 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:08,420 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:08,420 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration8_Lasso [2018-11-28 13:36:08,420 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:08,420 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:08,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,535 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:08,536 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,550 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,550 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,553 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,553 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,573 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,573 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,578 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,578 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,597 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,597 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,602 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,602 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,622 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,622 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,626 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,626 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,646 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,650 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,650 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 13:36:08,670 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,670 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:08,674 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,674 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,694 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,694 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,696 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,696 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,716 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,716 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,718 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,718 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,736 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,736 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,738 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,738 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,756 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,756 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,759 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,759 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,778 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,778 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,780 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,780 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,798 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,798 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,800 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,800 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 109 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 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:08,819 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,819 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,821 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:08,821 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,840 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:08,840 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:08,860 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:08,860 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:08,879 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:36:08,880 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:08,881 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:08,881 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:08,881 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:08,881 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:36:08,881 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:08,881 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:08,881 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:08,881 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration8_Lasso [2018-11-28 13:36:08,881 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:08,881 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:08,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:08,976 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:08,976 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:36:08,976 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,976 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,976 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,977 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,977 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,977 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,977 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,977 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,977 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,978 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,978 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,978 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,978 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,978 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,978 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,978 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,978 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,979 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,979 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,979 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,979 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,980 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,980 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,980 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,980 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,980 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,980 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,981 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,981 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,981 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,981 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 13:36:08,981 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,983 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 13:36:08,983 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 13:36:08,991 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,991 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,991 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,991 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,991 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,992 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,992 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,992 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,992 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,992 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,993 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,993 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,993 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,993 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,993 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,993 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,994 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,994 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,994 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,994 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,995 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,995 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,995 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,995 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,995 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,995 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,996 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,996 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,996 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,996 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,997 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,997 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,997 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,997 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,997 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,997 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,998 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:08,998 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:08,998 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:08,998 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:08,998 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:08,999 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:08,999 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:08,999 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:08,999 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:08,999 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:09,000 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:09,000 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:09,000 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:09,000 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:09,000 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:09,000 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:09,001 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:09,001 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:09,001 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:09,001 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:09,002 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:09,002 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:09,002 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:09,002 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:09,002 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:09,002 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:09,002 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:09,003 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:09,003 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:09,003 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:09,004 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:09,004 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:09,004 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:09,004 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:09,004 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:09,004 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:09,005 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:09,005 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:09,006 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:09,006 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:09,006 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:09,006 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:09,006 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:09,006 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:09,006 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:09,007 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:09,007 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:09,007 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:09,007 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:36:09,007 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:09,008 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:36:09,008 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:09,008 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:36:09,008 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:36:09,008 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:36:09,009 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 13:36:09,009 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:36:09,009 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:36:09,009 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 13:36:09,009 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:36:09,011 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 13:36:09,011 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 13:36:09,022 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:36:09,031 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:36:09,031 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-28 13:36:09,032 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:36:09,033 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-28 13:36:09,033 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:36:09,033 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ackermann_#in~n) = 1*ackermann_#in~n Supporting invariants [1*ackermann_#in~n >= 0] [2018-11-28 13:36:09,079 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 13:36:09,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:09,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:09,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:09,384 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 [2018-11-28 13:36:09,384 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63 Second operand 16 states. [2018-11-28 13:36:09,456 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. [2018-11-28 13:36:09,458 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 [2018-11-28 13:36:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 13:36:09,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-28 13:36:09,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 47 letters. Loop has 4 letters. [2018-11-28 13:36:09,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:09,459 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:36:09,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:09,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:09,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:09,682 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 [2018-11-28 13:36:09,682 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63 Second operand 16 states. [2018-11-28 13:36:09,749 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. [2018-11-28 13:36:09,751 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 [2018-11-28 13:36:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 13:36:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-28 13:36:09,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 47 letters. Loop has 4 letters. [2018-11-28 13:36:09,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:09,752 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:36:09,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:09,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:09,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:10,014 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 [2018-11-28 13:36:10,015 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 268 transitions. cyclomatic complexity: 63 Second operand 16 states. [2018-11-28 13:36:10,861 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. [2018-11-28 13:36:10,863 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 [2018-11-28 13:36:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 13:36:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 72 transitions. [2018-11-28 13:36:10,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 72 transitions. Stem has 47 letters. Loop has 4 letters. [2018-11-28 13:36:10,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:10,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 72 transitions. Stem has 51 letters. Loop has 4 letters. [2018-11-28 13:36:10,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:10,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 25 states and 72 transitions. Stem has 47 letters. Loop has 8 letters. [2018-11-28 13:36:10,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:36:10,865 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 506 states and 647 transitions. [2018-11-28 13:36:10,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:10,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 506 states to 331 states and 405 transitions. [2018-11-28 13:36:10,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 266 [2018-11-28 13:36:10,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 270 [2018-11-28 13:36:10,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 331 states and 405 transitions. [2018-11-28 13:36:10,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:10,875 INFO L705 BuchiCegarLoop]: Abstraction has 331 states and 405 transitions. [2018-11-28 13:36:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states and 405 transitions. [2018-11-28 13:36:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 293. [2018-11-28 13:36:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-11-28 13:36:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 360 transitions. [2018-11-28 13:36:10,886 INFO L728 BuchiCegarLoop]: Abstraction has 293 states and 360 transitions. [2018-11-28 13:36:10,886 INFO L608 BuchiCegarLoop]: Abstraction has 293 states and 360 transitions. [2018-11-28 13:36:10,886 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-28 13:36:10,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 293 states and 360 transitions. [2018-11-28 13:36:10,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:10,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:10,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:10,889 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [9, 7, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:10,889 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-28 13:36:10,890 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 [2018-11-28 13:36:10,890 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 [2018-11-28 13:36:10,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:10,890 INFO L82 PathProgramCache]: Analyzing trace with hash -997228084, now seen corresponding path program 3 times [2018-11-28 13:36:10,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:10,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:10,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:10,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:10,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-28 13:36:10,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:10,997 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:36:11,026 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-28 13:36:11,026 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:11,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-28 13:36:11,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:11,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 13:36:11,055 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:36:11,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 2 times [2018-11-28 13:36:11,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:11,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:11,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:11,056 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:11,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:11,146 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:11,147 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:11,147 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:11,147 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:11,147 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:11,147 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:11,147 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:11,147 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:11,147 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration9_Loop [2018-11-28 13:36:11,147 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:11,147 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:11,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:11,186 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:11,186 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,189 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,189 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,192 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,192 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,210 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,210 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,212 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,212 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 115 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 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:11,230 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,230 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,233 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,233 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,251 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,251 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,254 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,254 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,273 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,273 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,275 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,276 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,293 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,296 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,296 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,315 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,315 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,343 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:11,343 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,354 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,354 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,372 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:11,373 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:11,374 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:11,375 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_#res=0} Honda state: {ackermann_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-28 13:36:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:36:11,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:36:11,391 INFO L87 Difference]: Start difference. First operand 293 states and 360 transitions. cyclomatic complexity: 74 Second operand 15 states. [2018-11-28 13:36:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:11,712 INFO L93 Difference]: Finished difference Result 301 states and 365 transitions. [2018-11-28 13:36:11,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-28 13:36:11,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 301 states and 365 transitions. [2018-11-28 13:36:11,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:11,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 301 states to 297 states and 361 transitions. [2018-11-28 13:36:11,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 236 [2018-11-28 13:36:11,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 236 [2018-11-28 13:36:11,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 361 transitions. [2018-11-28 13:36:11,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:11,718 INFO L705 BuchiCegarLoop]: Abstraction has 297 states and 361 transitions. [2018-11-28 13:36:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 361 transitions. [2018-11-28 13:36:11,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 277. [2018-11-28 13:36:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-11-28 13:36:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 339 transitions. [2018-11-28 13:36:11,728 INFO L728 BuchiCegarLoop]: Abstraction has 277 states and 339 transitions. [2018-11-28 13:36:11,728 INFO L608 BuchiCegarLoop]: Abstraction has 277 states and 339 transitions. [2018-11-28 13:36:11,728 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-28 13:36:11,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 339 transitions. [2018-11-28 13:36:11,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:11,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:11,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:11,735 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [10, 8, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:11,735 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-28 13:36:11,735 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 [2018-11-28 13:36:11,735 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 [2018-11-28 13:36:11,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:11,736 INFO L82 PathProgramCache]: Analyzing trace with hash 258460313, now seen corresponding path program 4 times [2018-11-28 13:36:11,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:11,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:11,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:11,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:11,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-28 13:36:11,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:11,894 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:11,900 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:36:11,914 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:36:11,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:11,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-28 13:36:11,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:11,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-28 13:36:11,941 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:36:11,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 3 times [2018-11-28 13:36:11,941 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:11,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:11,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:11,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:11,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:12,023 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:12,024 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:12,024 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:12,024 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:12,024 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:12,024 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:12,024 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:12,024 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:12,024 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration10_Loop [2018-11-28 13:36:12,024 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:12,024 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:12,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:12,069 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:12,069 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,071 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,071 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,073 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,073 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,092 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,092 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,094 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,094 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,124 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,124 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,127 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,127 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,146 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,146 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,149 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,149 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 127 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 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:12,169 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,169 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,172 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,172 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,192 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,193 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,198 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,198 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,218 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,220 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,220 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 130 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 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:12,239 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:12,240 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,260 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:12,260 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:12,315 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:12,315 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] [2018-11-28 13:36:12,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 13:36:12,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-11-28 13:36:12,332 INFO L87 Difference]: Start difference. First operand 277 states and 339 transitions. cyclomatic complexity: 69 Second operand 17 states. [2018-11-28 13:36:12,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:12,758 INFO L93 Difference]: Finished difference Result 322 states and 390 transitions. [2018-11-28 13:36:12,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-28 13:36:12,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 390 transitions. [2018-11-28 13:36:12,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-28 13:36:12,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 318 states and 386 transitions. [2018-11-28 13:36:12,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 248 [2018-11-28 13:36:12,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2018-11-28 13:36:12,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 318 states and 386 transitions. [2018-11-28 13:36:12,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:12,765 INFO L705 BuchiCegarLoop]: Abstraction has 318 states and 386 transitions. [2018-11-28 13:36:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states and 386 transitions. [2018-11-28 13:36:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 304. [2018-11-28 13:36:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-11-28 13:36:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2018-11-28 13:36:12,774 INFO L728 BuchiCegarLoop]: Abstraction has 304 states and 372 transitions. [2018-11-28 13:36:12,774 INFO L608 BuchiCegarLoop]: Abstraction has 304 states and 372 transitions. [2018-11-28 13:36:12,774 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-28 13:36:12,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 304 states and 372 transitions. [2018-11-28 13:36:12,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:12,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:12,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:12,777 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:12,777 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-28 13:36:12,778 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 [2018-11-28 13:36:12,778 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 [2018-11-28 13:36:12,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash 807724262, now seen corresponding path program 5 times [2018-11-28 13:36:12,778 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:12,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:12,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:12,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:12,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:12,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:12,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 4 times [2018-11-28 13:36:12,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:12,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:12,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:12,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:12,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:12,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:12,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1221239647, now seen corresponding path program 6 times [2018-11-28 13:36:12,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:12,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:12,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:12,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:12,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 131 proven. 83 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-28 13:36:12,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:12,970 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:12,978 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:36:13,005 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-11-28 13:36:13,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:13,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 128 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-28 13:36:13,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:13,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 18 [2018-11-28 13:36:13,194 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:13,194 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:13,194 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:13,194 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:13,194 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:13,194 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:13,195 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:13,195 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:13,195 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration11_Loop [2018-11-28 13:36:13,195 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:13,195 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:13,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:13,239 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:13,239 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,242 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,243 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,246 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,246 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,264 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,264 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,267 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,267 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,285 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,285 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,288 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,288 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,306 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,306 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,308 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,309 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,326 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,327 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,329 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,329 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,347 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,349 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,349 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 139 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 139 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:13,369 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,369 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,372 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,372 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,390 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:13,390 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 141 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 141 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:13,410 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:13,410 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:13,423 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:13,423 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] [2018-11-28 13:36:13,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:36:13,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:36:13,440 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. cyclomatic complexity: 75 Second operand 18 states. [2018-11-28 13:36:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:13,689 INFO L93 Difference]: Finished difference Result 341 states and 411 transitions. [2018-11-28 13:36:13,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 13:36:13,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 411 transitions. [2018-11-28 13:36:13,693 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:13,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 241 states and 286 transitions. [2018-11-28 13:36:13,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 172 [2018-11-28 13:36:13,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2018-11-28 13:36:13,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 286 transitions. [2018-11-28 13:36:13,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:13,696 INFO L705 BuchiCegarLoop]: Abstraction has 241 states and 286 transitions. [2018-11-28 13:36:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 286 transitions. [2018-11-28 13:36:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-11-28 13:36:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-11-28 13:36:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 286 transitions. [2018-11-28 13:36:13,702 INFO L728 BuchiCegarLoop]: Abstraction has 241 states and 286 transitions. [2018-11-28 13:36:13,702 INFO L608 BuchiCegarLoop]: Abstraction has 241 states and 286 transitions. [2018-11-28 13:36:13,702 INFO L442 BuchiCegarLoop]: ======== Iteration 12============ [2018-11-28 13:36:13,702 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 241 states and 286 transitions. [2018-11-28 13:36:13,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:13,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:13,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:13,705 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [22, 16, 15, 10, 10, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1] [2018-11-28 13:36:13,705 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-28 13:36:13,706 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 [2018-11-28 13:36:13,706 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 [2018-11-28 13:36:13,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:13,706 INFO L82 PathProgramCache]: Analyzing trace with hash 286526941, now seen corresponding path program 7 times [2018-11-28 13:36:13,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:13,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:13,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:13,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:13,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 495 proven. 85 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-28 13:36:13,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:13,919 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:13,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:13,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 495 proven. 85 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-28 13:36:14,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:14,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-28 13:36:14,008 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:36:14,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:14,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 5 times [2018-11-28 13:36:14,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:14,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:14,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:14,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:14,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:14,087 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:14,087 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:14,087 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:14,087 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:14,087 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:14,087 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:14,088 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:14,088 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:14,088 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration12_Loop [2018-11-28 13:36:14,088 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:14,088 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:14,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:14,132 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:14,132 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,135 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,135 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,138 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,138 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 144 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 144 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:14,156 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,156 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,158 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,159 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,176 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,177 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,179 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,179 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,198 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,198 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,200 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,200 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,218 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,219 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,221 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,221 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,240 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,240 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,242 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,243 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,262 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,262 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,264 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,264 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,282 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:14,282 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:14,302 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:14,302 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:14,313 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:14,313 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] [2018-11-28 13:36:14,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-28 13:36:14,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2018-11-28 13:36:14,330 INFO L87 Difference]: Start difference. First operand 241 states and 286 transitions. cyclomatic complexity: 52 Second operand 25 states. [2018-11-28 13:36:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:15,264 INFO L93 Difference]: Finished difference Result 396 states and 482 transitions. [2018-11-28 13:36:15,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-11-28 13:36:15,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 396 states and 482 transitions. [2018-11-28 13:36:15,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:15,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 396 states to 392 states and 478 transitions. [2018-11-28 13:36:15,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 308 [2018-11-28 13:36:15,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2018-11-28 13:36:15,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 392 states and 478 transitions. [2018-11-28 13:36:15,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:15,274 INFO L705 BuchiCegarLoop]: Abstraction has 392 states and 478 transitions. [2018-11-28 13:36:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states and 478 transitions. [2018-11-28 13:36:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 347. [2018-11-28 13:36:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-11-28 13:36:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 420 transitions. [2018-11-28 13:36:15,284 INFO L728 BuchiCegarLoop]: Abstraction has 347 states and 420 transitions. [2018-11-28 13:36:15,284 INFO L608 BuchiCegarLoop]: Abstraction has 347 states and 420 transitions. [2018-11-28 13:36:15,284 INFO L442 BuchiCegarLoop]: ======== Iteration 13============ [2018-11-28 13:36:15,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 347 states and 420 transitions. [2018-11-28 13:36:15,286 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:15,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:15,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:15,288 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [23, 17, 15, 11, 11, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1] [2018-11-28 13:36:15,288 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-28 13:36:15,288 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 [2018-11-28 13:36:15,288 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 [2018-11-28 13:36:15,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1393549654, now seen corresponding path program 8 times [2018-11-28 13:36:15,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:15,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:15,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:15,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:15,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 546 proven. 104 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-28 13:36:15,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:15,522 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,539 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:36:15,573 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:36:15,573 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:15,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 546 proven. 104 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-28 13:36:15,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:15,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-28 13:36:15,612 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:36:15,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:15,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 6 times [2018-11-28 13:36:15,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:15,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:15,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:15,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:15,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:15,701 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:15,701 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:15,701 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:15,701 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:15,702 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:15,702 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:15,702 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:15,702 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:15,702 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration13_Loop [2018-11-28 13:36:15,702 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:15,702 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:15,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:15,764 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:15,764 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,768 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,770 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,770 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,789 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,789 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,792 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,792 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,811 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,811 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,815 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,815 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,833 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,833 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,838 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,838 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,856 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,856 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,858 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,858 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,876 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,876 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,878 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,878 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,896 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,896 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:15,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:15,917 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,967 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,967 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 161 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 161 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:15,985 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:15,985 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:15,988 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:15,988 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ackermann_~m=0} Honda state: {ackermann_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-28 13:36:16,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-28 13:36:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2018-11-28 13:36:16,006 INFO L87 Difference]: Start difference. First operand 347 states and 420 transitions. cyclomatic complexity: 80 Second operand 27 states. [2018-11-28 13:36:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:17,170 INFO L93 Difference]: Finished difference Result 413 states and 501 transitions. [2018-11-28 13:36:17,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-11-28 13:36:17,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 413 states and 501 transitions. [2018-11-28 13:36:17,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-28 13:36:17,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 413 states to 409 states and 497 transitions. [2018-11-28 13:36:17,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 316 [2018-11-28 13:36:17,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 316 [2018-11-28 13:36:17,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 409 states and 497 transitions. [2018-11-28 13:36:17,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:36:17,177 INFO L705 BuchiCegarLoop]: Abstraction has 409 states and 497 transitions. [2018-11-28 13:36:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 497 transitions. [2018-11-28 13:36:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2018-11-28 13:36:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-11-28 13:36:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 473 transitions. [2018-11-28 13:36:17,189 INFO L728 BuchiCegarLoop]: Abstraction has 386 states and 473 transitions. [2018-11-28 13:36:17,189 INFO L608 BuchiCegarLoop]: Abstraction has 386 states and 473 transitions. [2018-11-28 13:36:17,189 INFO L442 BuchiCegarLoop]: ======== Iteration 14============ [2018-11-28 13:36:17,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 386 states and 473 transitions. [2018-11-28 13:36:17,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 13:36:17,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:36:17,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:36:17,195 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [24, 18, 15, 12, 12, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1] [2018-11-28 13:36:17,195 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2018-11-28 13:36:17,195 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 [2018-11-28 13:36:17,195 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 [2018-11-28 13:36:17,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:17,196 INFO L82 PathProgramCache]: Analyzing trace with hash -410189577, now seen corresponding path program 9 times [2018-11-28 13:36:17,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:17,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:17,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:17,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:17,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:17,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1459432636, now seen corresponding path program 7 times [2018-11-28 13:36:17,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:17,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:17,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:17,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:36:17,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:36:17,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash -615721038, now seen corresponding path program 10 times [2018-11-28 13:36:17,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:36:17,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:36:17,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:17,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:36:17,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:36:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:36:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 527 proven. 279 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2018-11-28 13:36:17,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:36:17,402 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 13:36:17,421 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:36:17,478 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:36:17,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:17,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 464 proven. 365 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-11-28 13:36:17,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:17,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:36:17,607 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:36:17,607 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:36:17,607 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:36:17,607 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:36:17,607 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:36:17,607 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:17,607 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:36:17,607 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:36:17,607 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ackermann02_false-unreach-call_true-no-overflow_true-termination.c_Iteration14_Loop [2018-11-28 13:36:17,607 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:36:17,607 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:36:17,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:36:17,652 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:36:17,652 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:17,656 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,656 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,658 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,658 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:17,677 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,678 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,680 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,680 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 165 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 165 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:17,699 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,699 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,701 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,701 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:17,722 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,722 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,724 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,724 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 167 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 167 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:17,742 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,743 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,745 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,745 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:17,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,763 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,765 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,765 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:17,787 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,787 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,789 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,790 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 /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/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 [2018-11-28 13:36:17,808 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:36:17,808 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1967882-b5a9-408f-b869-343286432984/bin-2019/uautomizer/z3 Starting monitored process 171 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 171 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:36:17,827 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:36:17,827 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:36:17,872 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:36:17,872 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] [2018-11-28 13:36:17,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:36:17,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:36:17,889 INFO L87 Difference]: Start difference. First operand 386 states and 473 transitions. cyclomatic complexity: 94 Second operand 11 states. [2018-11-28 13:36:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:18,058 INFO L93 Difference]: Finished difference Result 379 states and 464 transitions. [2018-11-28 13:36:18,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:36:18,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 379 states and 464 transitions. [2018-11-28 13:36:18,061 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:36:18,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 379 states to 0 states and 0 transitions. [2018-11-28 13:36:18,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 13:36:18,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 13:36:18,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 13:36:18,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:36:18,062 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:36:18,062 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:36:18,062 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:36:18,062 INFO L442 BuchiCegarLoop]: ======== Iteration 15============ [2018-11-28 13:36:18,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:36:18,062 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:36:18,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 13:36:18,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 01:36:18 BoogieIcfgContainer [2018-11-28 13:36:18,069 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 13:36:18,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:36:18,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:36:18,070 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:36:18,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:35:58" (3/4) ... [2018-11-28 13:36:18,074 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:36:18,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:36:18,075 INFO L168 Benchmark]: Toolchain (without parser) took 20386.03 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 366.5 MB). Free memory was 953.3 MB in the beginning and 902.2 MB in the end (delta: 51.1 MB). Peak memory consumption was 417.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:18,076 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:36:18,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.01 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:18,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.43 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:36:18,077 INFO L168 Benchmark]: Boogie Preprocessor took 12.47 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:18,077 INFO L168 Benchmark]: RCFGBuilder took 200.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:18,078 INFO L168 Benchmark]: BuchiAutomizer took 19975.57 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 232.8 MB). Free memory was 1.1 GB in the beginning and 902.2 MB in the end (delta: 217.7 MB). Peak memory consumption was 450.5 MB. Max. memory is 11.5 GB. [2018-11-28 13:36:18,078 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 1.4 GB. Free memory is still 902.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:36:18,080 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.01 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.43 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.47 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 200.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 19975.57 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 232.8 MB). Free memory was 1.1 GB in the beginning and 902.2 MB in the end (delta: 217.7 MB). Peak memory consumption was 450.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.59 ms. Allocated memory is still 1.4 GB. Free memory is still 902.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 19.9s and 15 iterations. TraceHistogramMax:24. Analysis of lassos took 11.6s. Construction of modules took 2.0s. Büchi inclusion checks took 5.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 15. Automata minimization 0.1s 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, 2.0s 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: 133ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 126 LassoNonterminationAnalysisSatUnbounded: 12 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...