./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-numeric/rec_counter3_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-numeric/rec_counter3_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 639f18bc5de28da6eb107c1e55f1eb45909efdef .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:15:56,005 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:56,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:56,019 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:56,023 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:56,024 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:56,025 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:56,028 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:56,030 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:56,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:56,034 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:56,035 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:56,036 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:56,039 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:56,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:56,045 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:56,046 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:56,050 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:56,056 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:56,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:56,061 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:56,067 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:56,071 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:56,071 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:56,072 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:56,073 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:56,075 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:56,078 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:56,079 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:56,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:56,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:56,083 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:56,083 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:56,084 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:56,086 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:56,086 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:56,087 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:56,122 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:56,122 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:56,123 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:56,123 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:56,123 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:56,128 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:56,128 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:56,128 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:56,128 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:56,128 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:56,128 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:56,130 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:56,130 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:56,130 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:56,131 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:56,131 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:56,131 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:56,132 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:56,132 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:56,132 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:56,132 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:56,132 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:56,133 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:56,133 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:56,133 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:56,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:56,133 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:56,133 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:56,137 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:56,137 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 639f18bc5de28da6eb107c1e55f1eb45909efdef [2018-11-28 23:15:56,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:56,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:56,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:56,237 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:56,237 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:56,238 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-numeric/rec_counter3_true-termination_true-no-overflow.c [2018-11-28 23:15:56,301 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08610078f/4e4336728f2645debc987f48a6e4ccde/FLAG1f10d12a7 [2018-11-28 23:15:56,727 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:56,727 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-numeric/rec_counter3_true-termination_true-no-overflow.c [2018-11-28 23:15:56,734 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08610078f/4e4336728f2645debc987f48a6e4ccde/FLAG1f10d12a7 [2018-11-28 23:15:57,108 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08610078f/4e4336728f2645debc987f48a6e4ccde [2018-11-28 23:15:57,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:57,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:57,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:57,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:57,118 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:57,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b457bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57, skipping insertion in model container [2018-11-28 23:15:57,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:57,147 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:57,374 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:57,380 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:57,397 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:57,411 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:57,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57 WrapperNode [2018-11-28 23:15:57,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:57,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:57,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:57,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:57,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:57,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:57,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:57,442 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:57,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... [2018-11-28 23:15:57,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:57,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:57,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:57,461 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:57,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2018-11-28 23:15:57,581 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2018-11-28 23:15:57,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:57,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:57,843 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:57,843 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 23:15:57,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:57 BoogieIcfgContainer [2018-11-28 23:15:57,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:57,845 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:57,845 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:57,850 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:57,851 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:57,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:57" (1/3) ... [2018-11-28 23:15:57,853 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d2b52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:57, skipping insertion in model container [2018-11-28 23:15:57,853 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:57,853 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57" (2/3) ... [2018-11-28 23:15:57,853 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d2b52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:57, skipping insertion in model container [2018-11-28 23:15:57,854 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:57,854 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:57" (3/3) ... [2018-11-28 23:15:57,856 INFO L375 chiAutomizerObserver]: Analyzing ICFG rec_counter3_true-termination_true-no-overflow.c [2018-11-28 23:15:57,947 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:57,948 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:57,948 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:57,948 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:57,948 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:57,948 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:57,948 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:57,948 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:57,949 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:57,964 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-28 23:15:57,992 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2018-11-28 23:15:57,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:57,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:58,000 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:15:58,000 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:58,000 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:58,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2018-11-28 23:15:58,003 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2018-11-28 23:15:58,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:58,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:58,003 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:15:58,004 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:58,012 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 9#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2018-11-28 23:15:58,013 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 8#L5true assume !(0 == ~a); 11#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2018-11-28 23:15:58,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash 51816, now seen corresponding path program 1 times [2018-11-28 23:15:58,020 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:58,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:58,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:58,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:58,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:58,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:58,119 INFO L82 PathProgramCache]: Analyzing trace with hash 29959, now seen corresponding path program 1 times [2018-11-28 23:15:58,119 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:58,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:58,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:58,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:58,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:58,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:58,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1543650624, now seen corresponding path program 1 times [2018-11-28 23:15:58,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:58,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:58,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:58,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:58,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:58,314 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:58,315 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:58,315 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:58,316 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:58,316 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:58,316 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:58,317 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:58,317 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:58,317 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter3_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:58,317 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:58,317 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:58,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,371 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 23:15:58,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,459 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 23:15:58,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,935 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 23:15:58,944 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:58,945 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:58,951 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:58,951 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:58,961 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,961 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:58,983 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:58,983 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:58,989 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,990 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,012 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,012 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,017 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,017 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,049 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,049 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,053 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,053 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,080 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,081 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,084 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,085 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,106 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,107 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,134 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:59,134 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,148 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,149 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-5} Honda state: {rec_#in~a=-5} Generalized eigenvectors: [{rec_#in~a=0}, {rec_#in~a=-1}, {rec_#in~a=0}] Lambdas: [0, 1, 3] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:15:59,183 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,183 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,193 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,193 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-28 23:15:59,278 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:59,279 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:59,279 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:59,279 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:59,279 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:59,279 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,280 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:59,280 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:59,280 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter3_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 23:15:59,280 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:59,280 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:59,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,946 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 23:15:59,953 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:59,953 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,956 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,956 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,958 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,959 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,981 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,981 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,996 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,996 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,018 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,018 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,029 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,029 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,052 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,052 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,055 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,055 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3=0} Honda state: {ULTIMATE.start_main_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,077 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,080 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,080 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,101 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,102 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,104 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,105 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,125 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,126 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,146 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,146 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,173 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,173 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,176 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,176 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,196 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,197 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,200 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,200 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,221 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,221 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,223 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,224 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,246 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,250 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,250 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,271 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,271 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,301 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:00,301 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,334 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:00,336 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:00,336 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:00,336 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:00,336 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:00,336 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:00,337 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,337 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:00,337 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:00,337 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter3_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 23:16:00,337 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:00,337 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:00,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,409 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 23:16:00,436 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 23:16:00,459 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 23:16:00,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,880 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:00,886 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:00,888 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,890 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,890 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,891 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,891 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,891 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,893 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,893 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,897 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,898 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,898 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,899 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,899 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,899 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,899 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,900 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,900 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,901 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,902 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,902 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,902 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,903 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,903 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,903 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,903 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,904 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,905 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,905 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,906 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,906 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,906 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,906 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,907 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,907 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,908 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,909 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,910 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,910 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,910 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,911 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,911 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,911 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,911 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,912 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,913 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,914 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,914 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,915 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,915 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,915 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,915 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,916 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,916 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,917 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,917 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,918 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,918 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,918 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,918 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,919 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,919 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,919 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,921 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,921 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,922 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,922 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,922 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,923 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,923 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,923 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,924 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,925 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,926 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,926 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,926 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,927 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,927 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,927 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,928 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,928 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,929 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,930 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,930 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,931 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,931 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,931 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,931 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,932 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,932 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,933 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,934 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,934 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,934 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,935 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,935 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,935 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,936 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,936 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,938 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,938 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:00,939 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,939 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,939 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:16:00,939 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,949 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 23:16:00,950 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 23:16:01,096 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:01,154 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:16:01,158 INFO L444 ModelExtractionUtils]: 6 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:16:01,161 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:01,166 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-28 23:16:01,167 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:01,167 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2018-11-28 23:16:01,195 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:16:01,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:01,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:01,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:01,576 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 23:16:01,578 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2018-11-28 23:16:01,813 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 34 states and 42 transitions. Complement of second has 13 states. [2018-11-28 23:16:01,814 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 23:16:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:16:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-11-28 23:16:01,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 23:16:01,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:01,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:16:01,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:01,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:16:01,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:01,822 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 42 transitions. [2018-11-28 23:16:01,826 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 23:16:01,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 22 states and 29 transitions. [2018-11-28 23:16:01,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-28 23:16:01,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:16:01,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2018-11-28 23:16:01,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:01,836 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2018-11-28 23:16:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2018-11-28 23:16:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-28 23:16:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 23:16:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2018-11-28 23:16:01,867 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2018-11-28 23:16:01,867 INFO L608 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2018-11-28 23:16:01,867 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:16:01,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2018-11-28 23:16:01,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 23:16:01,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:01,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:01,870 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:01,870 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:01,870 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 116#L20 call main_#t~ret3 := rec(main_~i~0);< 115#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 125#recFINAL assume true; 132#recEXIT >#47#return; 123#L20-1 main_~res~1 := main_#t~ret3;havoc main_#t~ret3; 124#L21-2 [2018-11-28 23:16:01,870 INFO L796 eck$LassoCheckResult]: Loop: 124#L21-2 assume !!(main_~res~1 < 1); 124#L21-2 [2018-11-28 23:16:01,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:01,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1684481175, now seen corresponding path program 1 times [2018-11-28 23:16:01,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:01,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:01,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:01,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:02,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:02,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:16:02,014 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:16:02,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,015 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2018-11-28 23:16:02,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:16:02,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:16:02,052 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 8 Second operand 5 states. [2018-11-28 23:16:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:02,145 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2018-11-28 23:16:02,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:16:02,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2018-11-28 23:16:02,148 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 23:16:02,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 20 transitions. [2018-11-28 23:16:02,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-28 23:16:02,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-28 23:16:02,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2018-11-28 23:16:02,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:02,151 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-28 23:16:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2018-11-28 23:16:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-28 23:16:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 23:16:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-28 23:16:02,154 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-28 23:16:02,154 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-28 23:16:02,154 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:02,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2018-11-28 23:16:02,155 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 23:16:02,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:02,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:02,156 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:02,156 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:02,156 INFO L794 eck$LassoCheckResult]: Stem: 175#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 171#L18 assume !(main_~i~0 <= 0); 166#L20 call main_#t~ret3 := rec(main_~i~0);< 165#recENTRY ~a := #in~a; 167#L5 assume !(0 == ~a); 169#L8 call #t~ret0 := rec(~a - 1);< 168#recENTRY ~a := #in~a; 170#L5 assume 0 == ~a;#res := 0; 174#recFINAL assume true; 180#recEXIT >#45#return; 179#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 176#L10-2 [2018-11-28 23:16:02,156 INFO L796 eck$LassoCheckResult]: Loop: 176#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 176#L10-2 [2018-11-28 23:16:02,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1511241834, now seen corresponding path program 1 times [2018-11-28 23:16:02,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,172 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2018-11-28 23:16:02,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,177 INFO L82 PathProgramCache]: Analyzing trace with hash -396143387, now seen corresponding path program 1 times [2018-11-28 23:16:02,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:16:02,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:02,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:16:02,291 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:02,291 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:02,291 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:02,291 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:02,291 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:02,291 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,292 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:02,292 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:02,292 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:02,292 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:02,292 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:02,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,358 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:02,359 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,362 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:02,362 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:02,384 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:02,408 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:02,410 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:02,410 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:02,410 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:02,410 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:02,410 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:02,411 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,411 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:02,411 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:02,411 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:02,411 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:02,411 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:02,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,490 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:02,491 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:02,491 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:02,492 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:02,492 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:02,495 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:02,495 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:02,495 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:02,495 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:02,496 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:02,497 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:02,497 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:02,497 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:02,497 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:02,498 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:02,498 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:02,498 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:02,498 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:02,498 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:02,504 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:02,505 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:02,506 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:02,507 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:02,507 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:02,507 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:02,507 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-11-28 23:16:02,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:02,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:02,612 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:02,613 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-28 23:16:02,681 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 37 states and 49 transitions. Complement of second has 10 states. [2018-11-28 23:16:02,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 23:16:02,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 1 letters. [2018-11-28 23:16:02,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 1 letters. [2018-11-28 23:16:02,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-28 23:16:02,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 49 transitions. [2018-11-28 23:16:02,689 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 23:16:02,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 31 states and 41 transitions. [2018-11-28 23:16:02,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-11-28 23:16:02,692 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-28 23:16:02,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 41 transitions. [2018-11-28 23:16:02,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:02,692 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 23:16:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 41 transitions. [2018-11-28 23:16:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 23:16:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 23:16:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-11-28 23:16:02,698 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 23:16:02,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:16:02,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:16:02,698 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand 5 states. [2018-11-28 23:16:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:02,729 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2018-11-28 23:16:02,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:16:02,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2018-11-28 23:16:02,735 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 23:16:02,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 35 transitions. [2018-11-28 23:16:02,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-11-28 23:16:02,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-28 23:16:02,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2018-11-28 23:16:02,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:02,737 INFO L705 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-11-28 23:16:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2018-11-28 23:16:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-28 23:16:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 23:16:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2018-11-28 23:16:02,742 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-11-28 23:16:02,742 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-11-28 23:16:02,742 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:02,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2018-11-28 23:16:02,745 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 23:16:02,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:02,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:02,746 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:02,747 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:02,747 INFO L794 eck$LassoCheckResult]: Stem: 360#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 354#L18 assume !(main_~i~0 <= 0); 347#L20 call main_#t~ret3 := rec(main_~i~0);< 346#recENTRY ~a := #in~a; 348#L5 assume !(0 == ~a); 350#L8 call #t~ret0 := rec(~a - 1);< 349#recENTRY ~a := #in~a; 353#L5 assume 0 == ~a;#res := 0; 355#recFINAL assume true; 366#recEXIT >#45#return; 373#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 358#L10-2 assume !(~rescopy~0 > 0); 359#L10-3 #res := 1 + ~res~0; 374#recFINAL assume true; 367#recEXIT >#47#return; 356#L20-1 main_~res~1 := main_#t~ret3;havoc main_#t~ret3; 357#L21-2 [2018-11-28 23:16:02,747 INFO L796 eck$LassoCheckResult]: Loop: 357#L21-2 assume !!(main_~res~1 < 1); 357#L21-2 [2018-11-28 23:16:02,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1423892654, now seen corresponding path program 1 times [2018-11-28 23:16:02,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,766 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 2 times [2018-11-28 23:16:02,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1190999276, now seen corresponding path program 1 times [2018-11-28 23:16:02,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:02,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:16:02,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:16:02,906 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:16:02,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:16:03,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 23:16:03,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2018-11-28 23:16:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 23:16:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:16:03,018 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. cyclomatic complexity: 9 Second operand 11 states. [2018-11-28 23:16:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:03,105 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-11-28 23:16:03,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 23:16:03,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2018-11-28 23:16:03,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:03,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 26 transitions. [2018-11-28 23:16:03,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-28 23:16:03,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:16:03,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2018-11-28 23:16:03,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:03,110 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-11-28 23:16:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2018-11-28 23:16:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2018-11-28 23:16:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:16:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-11-28 23:16:03,113 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-28 23:16:03,113 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-28 23:16:03,113 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:16:03,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2018-11-28 23:16:03,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:03,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:03,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:03,116 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:03,116 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:03,118 INFO L794 eck$LassoCheckResult]: Stem: 482#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 483#L18 assume !(main_~i~0 <= 0); 473#L20 call main_#t~ret3 := rec(main_~i~0);< 472#recENTRY ~a := #in~a; 474#L5 assume !(0 == ~a); 477#L8 call #t~ret0 := rec(~a - 1);< 475#recENTRY ~a := #in~a; 478#L5 assume !(0 == ~a); 476#L8 call #t~ret0 := rec(~a - 1);< 475#recENTRY ~a := #in~a; 479#L5 assume 0 == ~a;#res := 0; 488#recFINAL assume true; 490#recEXIT >#45#return; 489#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 480#L10-2 assume !(~rescopy~0 > 0); 481#L10-3 #res := 1 + ~res~0; 486#recFINAL assume true; 487#recEXIT >#45#return; 484#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 485#L10-2 [2018-11-28 23:16:03,118 INFO L796 eck$LassoCheckResult]: Loop: 485#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 485#L10-2 [2018-11-28 23:16:03,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:03,118 INFO L82 PathProgramCache]: Analyzing trace with hash -274003163, now seen corresponding path program 1 times [2018-11-28 23:16:03,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:03,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:03,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:03,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:03,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:03,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:03,136 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2018-11-28 23:16:03,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:03,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:03,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:03,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:03,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:03,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 95836554, now seen corresponding path program 1 times [2018-11-28 23:16:03,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:03,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:03,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:03,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:03,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:03,268 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:03,268 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:03,268 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:03,268 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:03,268 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:03,268 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:03,268 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:03,268 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:03,269 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:16:03,269 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:03,269 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:03,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:03,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:03,337 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:03,337 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:03,343 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:03,343 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:16:03,388 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:03,388 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:03,414 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:03,415 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:03,416 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:03,416 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:03,416 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:03,416 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:03,416 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:03,416 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:03,416 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:03,416 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:16:03,416 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:03,417 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:03,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:03,431 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 23:16:03,458 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:03,459 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:03,459 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:03,460 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:03,460 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:03,460 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:03,460 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:03,461 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:03,461 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:03,461 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:03,463 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:03,465 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:03,465 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:03,465 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:03,466 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:03,466 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:03,466 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-11-28 23:16:03,466 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:03,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:03,638 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:03,638 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:03,691 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2018-11-28 23:16:03,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-28 23:16:03,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-28 23:16:03,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:03,693 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:03,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:03,793 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:03,794 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:03,854 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2018-11-28 23:16:03,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-28 23:16:03,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-28 23:16:03,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:03,856 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:03,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:03,958 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:03,958 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:04,040 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2018-11-28 23:16:04,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-28 23:16:04,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-28 23:16:04,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2018-11-28 23:16:04,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2018-11-28 23:16:04,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,043 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2018-11-28 23:16:04,045 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:04,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-11-28 23:16:04,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:04,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:04,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:04,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:04,045 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,045 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,046 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,046 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:16:04,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:04,046 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:04,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:04,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:04 BoogieIcfgContainer [2018-11-28 23:16:04,055 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:04,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:04,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:04,055 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:04,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:57" (3/4) ... [2018-11-28 23:16:04,060 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:04,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:04,061 INFO L168 Benchmark]: Toolchain (without parser) took 6948.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -149.8 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,064 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.57 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.04 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,066 INFO L168 Benchmark]: Boogie Preprocessor took 18.19 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,066 INFO L168 Benchmark]: RCFGBuilder took 383.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,067 INFO L168 Benchmark]: BuchiAutomizer took 6209.86 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -10.7 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,068 INFO L168 Benchmark]: Witness Printer took 5.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,073 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.57 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.04 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.19 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 383.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6209.86 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -10.7 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 4 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.1s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 4.3s. Construction of modules took 0.2s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 101 SDtfs, 94 SDslu, 159 SDs, 0 SdLazy, 100 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf124 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 228ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...