./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-numeric/rec_counter1_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_counter1_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 82bd2b65619821bf052931b3532da39241349d4f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:15:55,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:55,737 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:55,753 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:55,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:55,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:55,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:55,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:55,761 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:55,762 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:55,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:55,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:55,764 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:55,765 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:55,766 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:55,767 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:55,768 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:55,770 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:55,772 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:55,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:55,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:55,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:55,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:55,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:55,779 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:55,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:55,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:55,782 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:55,783 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:55,784 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:55,784 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:55,785 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:55,785 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:55,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:55,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:55,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:55,788 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:55,804 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:55,805 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:55,806 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:55,806 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:55,806 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:55,806 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:55,807 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:55,807 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:55,807 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:55,807 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:55,807 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:55,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:55,808 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:55,808 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:55,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:55,808 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:55,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:55,809 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:55,809 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:55,809 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:55,809 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:55,809 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:55,810 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:55,810 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:55,810 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:55,810 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:55,810 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:55,811 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:55,812 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:55,812 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 -> 82bd2b65619821bf052931b3532da39241349d4f [2018-11-28 23:15:55,859 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:55,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:55,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:55,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:55,895 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:55,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2018-11-28 23:15:55,953 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1db361c/3854840fcb8c4fae8e4aa11bde838e11/FLAGbbd0ce7eb [2018-11-28 23:15:56,453 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:56,454 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2018-11-28 23:15:56,462 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1db361c/3854840fcb8c4fae8e4aa11bde838e11/FLAGbbd0ce7eb [2018-11-28 23:15:56,804 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1db361c/3854840fcb8c4fae8e4aa11bde838e11 [2018-11-28 23:15:56,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:56,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:56,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:56,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:56,815 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:56,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:56" (1/1) ... [2018-11-28 23:15:56,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154d87e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:56, skipping insertion in model container [2018-11-28 23:15:56,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:56" (1/1) ... [2018-11-28 23:15:56,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:56,845 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:57,066 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:57,070 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:57,086 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:57,101 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:57,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:57 WrapperNode [2018-11-28 23:15:57,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:57,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:57,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:57,103 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:57,114 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 23:15:57,119 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 23:15:57,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:57,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:57,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:57,140 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:57,151 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 23:15:57,151 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 23:15:57,152 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 23:15:57,152 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 23:15:57,154 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 23:15:57,162 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 23:15:57,163 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 23:15:57,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:57,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:57,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:57,165 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:57,166 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 23:15:57,308 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2018-11-28 23:15:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2018-11-28 23:15:57,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:57,622 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:57,622 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:15:57,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:57 BoogieIcfgContainer [2018-11-28 23:15:57,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:57,624 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:57,624 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:57,632 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:57,634 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:57,634 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:56" (1/3) ... [2018-11-28 23:15:57,636 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@543f37b0 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 23:15:57,636 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:57,636 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 23:15:57,637 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@543f37b0 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 23:15:57,637 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:57,637 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 23:15:57,639 INFO L375 chiAutomizerObserver]: Analyzing ICFG rec_counter1_true-termination_true-no-overflow.c [2018-11-28 23:15:57,737 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:57,738 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:57,738 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:57,739 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:57,739 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:57,739 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:57,739 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:57,739 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:57,739 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:57,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-28 23:15:57,788 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 23:15:57,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:57,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:57,801 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:15:57,801 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:57,802 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:57,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-28 23:15:57,804 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 23:15:57,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:57,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:57,805 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:15:57,805 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:57,815 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2018-11-28 23:15:57,815 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2018-11-28 23:15:57,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2018-11-28 23:15:57,824 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:57,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:57,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:57,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:57,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:57,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:57,939 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2018-11-28 23:15:57,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:57,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:57,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:57,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:57,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:57,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2018-11-28 23:15:57,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:57,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:57,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:57,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:57,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:58,162 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:58,163 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:58,165 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:58,165 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:58,166 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:58,166 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:58,166 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:58,166 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:58,166 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:58,166 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:58,168 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:58,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,305 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 23:15:58,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:58,739 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 23:15:58,765 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:58,767 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) [2018-11-28 23:15:58,774 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:58,775 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:58,790 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,791 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) [2018-11-28 23:15:58,824 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:58,824 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:58,834 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,834 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) [2018-11-28 23:15:58,865 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:58,866 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:58,871 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,871 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 23:15:58,892 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:58,893 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:58,899 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,899 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 23:15:58,920 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:58,920 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:58,924 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,924 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 23:15:58,950 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. 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 23:15:58,979 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:58,979 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:58,996 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:58,996 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 23:15:59,030 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,030 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 23:15:59,036 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,037 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 23:15:59,147 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:59,147 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:59,147 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:59,147 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:59,147 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:59,148 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:59,148 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:59,148 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:59,148 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 23:15:59,148 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:59,148 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:59,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:59,831 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:59,832 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 23:15:59,835 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,836 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,841 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,841 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 23:15:59,861 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,861 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,864 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,864 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 23:15:59,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,887 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,890 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,890 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 23:15:59,912 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,912 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,926 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,926 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 23:15:59,947 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,947 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,950 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,950 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 23:15:59,969 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,970 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:59,972 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:59,972 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 23:15:59,993 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:59,993 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_~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 23:16:00,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,017 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,020 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,020 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 23:16:00,042 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,042 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,045 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,045 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 23:16:00,066 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,066 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,069 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,069 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 23:16:00,091 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,091 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,095 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,095 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 23:16:00,116 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,116 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:00,118 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:00,119 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1=0} Honda state: {ULTIMATE.start_main_~res~1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,144 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:00,144 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:16:00,174 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:00,175 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,205 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:00,207 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:00,207 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:00,207 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:00,207 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:00,208 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:00,208 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:00,208 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:00,208 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:00,208 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 23:16:00,208 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:00,208 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:00,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,342 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 23:16:00,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:00,749 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:00,753 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:00,755 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 23:16:00,756 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,757 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,757 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,758 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,758 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,760 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,760 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,764 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,764 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 23:16:00,765 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,765 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,765 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,765 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,766 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,766 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,766 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,767 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,768 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 23:16:00,768 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,769 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,769 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,769 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,769 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,770 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,770 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,771 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,771 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 23:16:00,772 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,772 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,772 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,772 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,772 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,773 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,773 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,775 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,775 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 23:16:00,776 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,776 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,776 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,776 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,776 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,777 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,777 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,779 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,779 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 23:16:00,780 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,780 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,780 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,780 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,780 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,781 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,781 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,782 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,783 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 23:16:00,783 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,783 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,783 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,784 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,784 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,784 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,784 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,786 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,787 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 23:16:00,787 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,787 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,787 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,788 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,788 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,788 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,788 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,790 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,791 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 23:16:00,791 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,792 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,792 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,792 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,792 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,796 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,796 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,798 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,800 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 23:16:00,800 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,801 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,801 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,801 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,801 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,802 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,802 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,803 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,803 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 23:16:00,804 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,804 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:00,804 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,804 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:00,804 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,805 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:00,805 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:00,807 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:00,807 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 23:16:00,811 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:00,811 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:00,811 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:16:00,811 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:00,824 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-28 23:16:00,824 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 23:16:00,951 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:00,985 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:16:00,985 INFO L444 ModelExtractionUtils]: 6 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:16:00,988 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:00,995 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-28 23:16:00,995 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:00,996 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 23:16:01,016 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:16:01,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:01,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:01,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:01,320 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 23:16:01,337 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 23:16:01,338 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2018-11-28 23:16:01,599 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 33 states and 39 transitions. Complement of second has 13 states. [2018-11-28 23:16:01,600 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 23:16:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:16:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-11-28 23:16:01,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 23:16:01,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:01,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:16:01,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:01,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:16:01,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:01,608 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2018-11-28 23:16:01,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:01,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2018-11-28 23:16:01,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 23:16:01,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 23:16:01,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-11-28 23:16:01,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:01,624 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-28 23:16:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-11-28 23:16:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-11-28 23:16:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 23:16:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-11-28 23:16:01,652 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-28 23:16:01,652 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-28 23:16:01,652 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:16:01,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-11-28 23:16:01,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:01,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:01,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:01,654 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:01,654 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:01,655 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2018-11-28 23:16:01,655 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2018-11-28 23:16:01,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:01,655 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2018-11-28 23:16:01,656 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:01,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:01,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:01,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:01,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2018-11-28 23:16:01,670 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:01,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:01,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:01,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2018-11-28 23:16:01,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:01,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:01,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:01,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:01,773 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 23:16:01,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:01,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:16:01,807 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:01,807 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:01,807 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:01,807 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:01,807 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:01,807 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:01,807 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:01,808 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:01,808 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:01,808 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:01,808 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:01,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:01,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:01,883 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:01,883 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:01,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:01,887 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:01,911 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:01,911 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:01,933 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:01,935 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:01,935 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:01,935 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:01,935 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:01,935 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:01,935 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:01,936 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:01,936 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:01,936 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:01,936 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:01,936 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:01,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:01,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,005 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:02,005 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:02,006 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 23:16:02,007 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:02,008 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:02,008 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:02,008 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:02,008 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:02,009 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:02,010 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:02,011 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:02,012 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:02,012 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:02,013 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:02,013 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:02,013 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:02,013 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:02,016 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:02,016 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:02,020 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:02,022 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:02,023 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:02,023 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:02,023 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:02,023 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:02,023 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-11-28 23:16:02,025 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:02,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,288 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 23:16:02,289 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 23:16:02,289 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:02,350 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 64 transitions. Complement of second has 12 states. [2018-11-28 23:16:02,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2018-11-28 23:16:02,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2018-11-28 23:16:02,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2018-11-28 23:16:02,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-28 23:16:02,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2018-11-28 23:16:02,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:02,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2018-11-28 23:16:02,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-28 23:16:02,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:16:02,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-11-28 23:16:02,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:02,361 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-11-28 23:16:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-11-28 23:16:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2018-11-28 23:16:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 23:16:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2018-11-28 23:16:02,365 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-11-28 23:16:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:16:02,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:16:02,370 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2018-11-28 23:16:02,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:02,410 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2018-11-28 23:16:02,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:16:02,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2018-11-28 23:16:02,414 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:02,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2018-11-28 23:16:02,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-28 23:16:02,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:16:02,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2018-11-28 23:16:02,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:02,420 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-11-28 23:16:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2018-11-28 23:16:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2018-11-28 23:16:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:16:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-11-28 23:16:02,424 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-28 23:16:02,424 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-28 23:16:02,424 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:02,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2018-11-28 23:16:02,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:02,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:02,426 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:02,426 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:02,426 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:02,427 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 291#L18 assume !(main_~i~0 <= 0); 283#L20 call main_#t~ret3 := rec(main_~i~0);< 282#recENTRY ~a := #in~a; 284#L5 assume !(0 == ~a); 286#L8 call #t~ret0 := rec(~a - 1);< 285#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 287#L8 call #t~ret0 := rec(~a - 1);< 285#recENTRY ~a := #in~a; 289#L5 assume 0 == ~a;#res := 0; 300#recFINAL assume true; 297#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 292#L10-2 assume !(~rescopy~0 > 0); 293#L10-3 #res := 1 + ~res~0; 296#recFINAL assume true; 299#recEXIT >#34#return; 294#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 295#L10-2 [2018-11-28 23:16:02,427 INFO L796 eck$LassoCheckResult]: Loop: 295#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 295#L10-2 [2018-11-28 23:16:02,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2018-11-28 23:16:02,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,446 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2018-11-28 23:16:02,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,450 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2018-11-28 23:16:02,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,451 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:02,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,493 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:02,493 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:02,493 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:02,493 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:02,493 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:02,494 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,494 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:02,494 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:02,494 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:02,494 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:02,494 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:02,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,562 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:02,562 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 23:16:02,570 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:02,571 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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,594 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:02,594 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:02,640 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:02,642 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:02,642 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:02,642 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:02,642 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:02,642 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:02,643 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,643 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:02,643 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:02,643 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:02,643 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:02,643 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:02,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,721 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:02,721 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:02,722 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 23:16:02,722 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:02,722 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:02,723 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:02,723 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:02,723 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:02,724 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:02,724 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:02,726 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:02,728 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:02,728 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:02,728 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:02,729 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:02,729 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:02,729 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-11-28 23:16:02,729 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:02,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,860 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 23:16:02,860 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 23:16:02,860 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:02,922 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 23:16:02,925 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 23:16:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-28 23:16:02,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-28 23:16:02,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,926 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:02,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,037 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 23:16:03,037 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 23:16:03,037 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:03,173 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 23:16:03,174 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 23:16:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-28 23:16:03,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-28 23:16:03,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:03,175 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:03,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:03,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:03,262 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 23:16:03,262 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 23:16:03,262 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:03,373 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 23:16:03,374 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 23:16:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-28 23:16:03,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-28 23:16:03,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:03,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2018-11-28 23:16:03,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:03,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2018-11-28 23:16:03,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:03,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2018-11-28 23:16:03,378 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:03,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-11-28 23:16:03,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:03,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:03,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:03,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:03,379 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:03,379 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:03,379 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:03,379 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:03,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:03,379 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:03,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:03,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:03 BoogieIcfgContainer [2018-11-28 23:16:03,388 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:03,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:03,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:03,388 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:03,389 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 23:16:03,393 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:03,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:03,394 INFO L168 Benchmark]: Toolchain (without parser) took 6585.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.2 MB). Free memory was 942.0 MB in the beginning and 1.2 GB in the end (delta: -219.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:03,395 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:03,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.37 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:03,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.83 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:03,397 INFO L168 Benchmark]: Boogie Preprocessor took 24.58 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:03,397 INFO L168 Benchmark]: RCFGBuilder took 458.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:03,398 INFO L168 Benchmark]: BuchiAutomizer took 5764.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:03,399 INFO L168 Benchmark]: Witness Printer took 5.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:03,403 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 291.37 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.2 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 36.83 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.58 ms. Allocated memory is still 1.0 GB. Free memory is still 931.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 458.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5764.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 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 5 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.6s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 3.9s. Construction of modules took 0.1s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 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: 188ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 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...