./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 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-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 0.1.24-0ed9222-m [2019-01-14 02:18:44,743 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 02:18:44,746 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 02:18:44,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 02:18:44,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 02:18:44,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 02:18:44,763 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 02:18:44,766 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 02:18:44,767 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 02:18:44,768 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 02:18:44,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 02:18:44,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 02:18:44,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 02:18:44,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 02:18:44,772 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 02:18:44,773 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 02:18:44,774 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 02:18:44,776 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 02:18:44,778 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 02:18:44,779 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 02:18:44,780 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 02:18:44,781 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 02:18:44,784 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 02:18:44,784 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 02:18:44,784 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 02:18:44,785 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 02:18:44,786 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 02:18:44,787 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 02:18:44,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 02:18:44,789 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 02:18:44,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 02:18:44,790 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 02:18:44,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 02:18:44,791 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 02:18:44,792 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 02:18:44,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 02:18:44,793 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-14 02:18:44,815 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 02:18:44,815 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 02:18:44,816 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 02:18:44,816 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 02:18:44,816 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 02:18:44,818 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 02:18:44,818 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 02:18:44,818 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 02:18:44,818 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 02:18:44,818 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 02:18:44,818 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 02:18:44,819 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 02:18:44,819 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 02:18:44,820 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 02:18:44,820 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 02:18:44,820 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 02:18:44,820 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 02:18:44,820 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 02:18:44,820 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 02:18:44,821 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 02:18:44,821 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 02:18:44,821 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 02:18:44,821 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 02:18:44,821 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 02:18:44,821 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 02:18:44,822 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 02:18:44,822 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 02:18:44,822 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 02:18:44,825 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 02:18:44,826 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 [2019-01-14 02:18:44,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 02:18:44,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 02:18:44,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 02:18:44,885 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 02:18:44,886 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 02:18:44,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2019-01-14 02:18:44,942 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0082dc09a/35a8dfbc8d45485a8cb16fb2bd883c18/FLAG88bb20cdd [2019-01-14 02:18:45,337 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 02:18:45,337 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2019-01-14 02:18:45,342 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0082dc09a/35a8dfbc8d45485a8cb16fb2bd883c18/FLAG88bb20cdd [2019-01-14 02:18:45,714 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0082dc09a/35a8dfbc8d45485a8cb16fb2bd883c18 [2019-01-14 02:18:45,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 02:18:45,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 02:18:45,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 02:18:45,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 02:18:45,724 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 02:18:45,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:18:45" (1/1) ... [2019-01-14 02:18:45,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de79d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:45, skipping insertion in model container [2019-01-14 02:18:45,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:18:45" (1/1) ... [2019-01-14 02:18:45,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 02:18:45,751 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 02:18:45,969 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:18:45,977 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 02:18:45,997 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:18:46,016 INFO L195 MainTranslator]: Completed translation [2019-01-14 02:18:46,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46 WrapperNode [2019-01-14 02:18:46,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 02:18:46,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 02:18:46,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 02:18:46,017 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 02:18:46,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 02:18:46,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 02:18:46,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 02:18:46,058 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 02:18:46,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... [2019-01-14 02:18:46,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 02:18:46,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 02:18:46,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 02:18:46,084 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 02:18:46,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-01-14 02:18:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-01-14 02:18:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 02:18:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 02:18:46,505 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 02:18:46,505 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 02:18:46,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:18:46 BoogieIcfgContainer [2019-01-14 02:18:46,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 02:18:46,509 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 02:18:46,509 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 02:18:46,514 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 02:18:46,515 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:18:46,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 02:18:45" (1/3) ... [2019-01-14 02:18:46,516 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@172d5930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:18:46, skipping insertion in model container [2019-01-14 02:18:46,517 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:18:46,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:18:46" (2/3) ... [2019-01-14 02:18:46,517 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@172d5930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:18:46, skipping insertion in model container [2019-01-14 02:18:46,517 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:18:46,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:18:46" (3/3) ... [2019-01-14 02:18:46,529 INFO L375 chiAutomizerObserver]: Analyzing ICFG rec_counter1_true-termination_true-no-overflow.c [2019-01-14 02:18:46,646 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 02:18:46,647 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 02:18:46,647 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 02:18:46,647 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 02:18:46,647 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 02:18:46,647 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 02:18:46,648 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 02:18:46,648 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 02:18:46,648 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 02:18:46,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-01-14 02:18:46,691 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-01-14 02:18:46,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:46,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:46,699 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-01-14 02:18:46,699 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:18:46,700 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 02:18:46,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-01-14 02:18:46,702 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-01-14 02:18:46,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:46,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:46,702 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-01-14 02:18:46,702 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:18:46,709 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2019-01-14 02:18:46,709 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2019-01-14 02:18:46,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:46,714 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2019-01-14 02:18:46,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:46,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:46,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:46,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:46,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:46,798 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2019-01-14 02:18:46,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:46,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:46,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:46,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:46,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:46,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2019-01-14 02:18:46,812 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:46,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:46,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:46,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:46,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:46,992 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:46,994 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:46,994 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:46,994 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:46,995 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:18:46,995 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:46,996 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:46,996 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:46,996 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Loop [2019-01-14 02:18:46,996 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:46,996 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:47,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,390 WARN L181 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-01-14 02:18:47,416 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:47,417 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:47,429 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:47,430 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:47,440 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:47,440 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:47,465 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:47,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:47,469 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:47,469 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:47,491 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:47,492 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:47,494 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:47,495 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 [2019-01-14 02:18:47,517 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:47,517 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:47,531 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:47,532 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 [2019-01-14 02:18:47,573 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:47,574 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:47,578 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:47,578 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 [2019-01-14 02:18:47,600 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:47,601 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 [2019-01-14 02:18:47,627 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:18:47,627 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:47,643 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:47,644 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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:47,666 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:47,667 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:47,670 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:47,670 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2019-01-14 02:18:47,762 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:47,763 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:47,763 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:47,763 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:47,763 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:18:47,763 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:47,763 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:47,764 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:47,764 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2019-01-14 02:18:47,764 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:47,764 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:47,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:47,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,377 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:48,377 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 [2019-01-14 02:18:48,381 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,381 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,384 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,384 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 [2019-01-14 02:18:48,406 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,407 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,410 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,410 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 [2019-01-14 02:18:48,432 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,432 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,435 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,435 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) [2019-01-14 02:18:48,456 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:48,457 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,474 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,475 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 [2019-01-14 02:18:48,497 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,498 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,500 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,500 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 [2019-01-14 02:18:48,522 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,522 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,529 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,529 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 [2019-01-14 02:18:48,549 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,550 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,552 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,552 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 [2019-01-14 02:18:48,575 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,576 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,578 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,578 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 [2019-01-14 02:18:48,601 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,601 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,604 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,604 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 [2019-01-14 02:18:48,626 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,626 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,629 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,629 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 [2019-01-14 02:18:48,654 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,654 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,668 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,668 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 [2019-01-14 02:18:48,692 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,693 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,696 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:18:48,696 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 [2019-01-14 02:18:48,721 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:48,721 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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:48,764 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:18:48,764 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:48,792 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:18:48,794 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:48,794 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:48,794 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:48,794 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:48,794 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:18:48,795 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:48,795 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:48,795 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:48,795 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2019-01-14 02:18:48,795 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:48,795 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:48,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:48,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:49,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:49,322 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:49,326 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:18:49,328 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,329 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,330 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,330 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,330 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,330 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,332 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,332 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,335 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,336 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,337 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,337 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,337 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,337 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,337 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,338 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,338 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,339 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,340 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,340 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,340 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,340 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,341 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,341 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,341 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,341 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,342 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,343 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,343 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,344 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,344 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,344 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,344 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,345 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,345 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,346 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,347 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,347 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,348 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,348 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,348 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,348 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,349 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,349 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,350 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,351 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,351 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,351 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,352 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,352 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,352 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,352 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,353 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,357 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,358 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,358 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,358 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,359 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,360 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,360 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,361 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,361 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,364 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,364 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,365 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,366 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,366 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,366 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,367 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,367 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,367 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,371 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,371 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,372 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,372 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,372 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,373 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,376 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,376 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,377 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,380 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,381 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,382 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,382 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,382 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,382 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,382 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,386 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,386 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,388 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,388 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,394 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,396 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:49,396 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,396 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:49,396 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,397 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:49,397 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:49,404 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:49,405 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:49,408 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:49,408 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:49,408 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2019-01-14 02:18:49,408 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:49,426 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-01-14 02:18:49,426 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-01-14 02:18:49,571 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:18:49,627 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-01-14 02:18:49,628 INFO L444 ModelExtractionUtils]: 6 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-01-14 02:18:49,633 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:18:49,639 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-01-14 02:18:49,639 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:18:49,640 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2019-01-14 02:18:49,667 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-01-14 02:18:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:49,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:49,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:49,965 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 [2019-01-14 02:18:49,966 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2019-01-14 02:18:50,196 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. [2019-01-14 02:18:50,197 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 [2019-01-14 02:18:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-01-14 02:18:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-01-14 02:18:50,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-01-14 02:18:50,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:50,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-01-14 02:18:50,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:50,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-01-14 02:18:50,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:50,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2019-01-14 02:18:50,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-14 02:18:50,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2019-01-14 02:18:50,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-01-14 02:18:50,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-01-14 02:18:50,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2019-01-14 02:18:50,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:18:50,220 INFO L706 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2019-01-14 02:18:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2019-01-14 02:18:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2019-01-14 02:18:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-01-14 02:18:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-01-14 02:18:50,246 INFO L729 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-01-14 02:18:50,246 INFO L609 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-01-14 02:18:50,246 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-14 02:18:50,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-01-14 02:18:50,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-14 02:18:50,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:50,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:50,248 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 02:18:50,248 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-14 02:18:50,249 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2019-01-14 02:18:50,249 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2019-01-14 02:18:50,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:50,249 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2019-01-14 02:18:50,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:50,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:50,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:50,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:50,263 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-01-14 02:18:50,263 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:50,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:50,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:50,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2019-01-14 02:18:50,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:50,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:50,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:50,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-01-14 02:18:50,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 02:18:50,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 02:18:50,398 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:50,398 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:50,398 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:50,398 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:50,399 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:18:50,399 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:50,399 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:50,399 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:50,399 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-14 02:18:50,399 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:50,400 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:50,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:50,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:50,469 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:50,469 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 [2019-01-14 02:18:50,473 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:50,473 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 [2019-01-14 02:18:50,496 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:18:50,496 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:50,518 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:18:50,519 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:50,520 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:50,520 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:50,520 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:50,520 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:18:50,520 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:50,520 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:50,520 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:50,521 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2019-01-14 02:18:50,521 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:50,521 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:50,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:50,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:50,583 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:50,584 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:18:50,585 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:50,586 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:50,586 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:50,586 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:50,587 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:50,587 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:50,587 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:50,587 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:50,588 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:18:50,589 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:50,589 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:50,589 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:50,590 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:50,590 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:50,590 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:50,590 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:50,591 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:50,596 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:18:50,602 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:18:50,603 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:18:50,603 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:18:50,603 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:18:50,603 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:18:50,603 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-01-14 02:18:50,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:18:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:50,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:50,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:50,747 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 [2019-01-14 02:18:50,747 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-01-14 02:18:50,804 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. [2019-01-14 02:18:50,806 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 [2019-01-14 02:18:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:18:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2019-01-14 02:18:50,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2019-01-14 02:18:50,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:50,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2019-01-14 02:18:50,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:50,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2019-01-14 02:18:50,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:50,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2019-01-14 02:18:50,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-14 02:18:50,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2019-01-14 02:18:50,816 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-01-14 02:18:50,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-01-14 02:18:50,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-01-14 02:18:50,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:18:50,817 INFO L706 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-01-14 02:18:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-01-14 02:18:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-01-14 02:18:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-14 02:18:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2019-01-14 02:18:50,821 INFO L729 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-01-14 02:18:50,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 02:18:50,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 02:18:50,825 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2019-01-14 02:18:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 02:18:50,851 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-01-14 02:18:50,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 02:18:50,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2019-01-14 02:18:50,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-14 02:18:50,855 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2019-01-14 02:18:50,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-01-14 02:18:50,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-01-14 02:18:50,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2019-01-14 02:18:50,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:18:50,856 INFO L706 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-01-14 02:18:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2019-01-14 02:18:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-01-14 02:18:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-14 02:18:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-01-14 02:18:50,860 INFO L729 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-01-14 02:18:50,860 INFO L609 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-01-14 02:18:50,860 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-14 02:18:50,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2019-01-14 02:18:50,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-14 02:18:50,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:18:50,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:18:50,862 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-01-14 02:18:50,862 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-14 02:18:50,863 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 291#L18 assume !(main_~i~0 <= 0); 283#L20 call main_#t~ret3 := rec(main_~i~0);< 282#recENTRY ~a := #in~a; 284#L5 assume !(0 == ~a); 286#L8 call #t~ret0 := rec(~a - 1);< 285#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 287#L8 call #t~ret0 := rec(~a - 1);< 285#recENTRY ~a := #in~a; 289#L5 assume 0 == ~a;#res := 0; 300#recFINAL assume true; 297#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 292#L10-2 assume !(~rescopy~0 > 0); 293#L10-3 #res := 1 + ~res~0; 296#recFINAL assume true; 299#recEXIT >#34#return; 294#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 295#L10-2 [2019-01-14 02:18:50,863 INFO L796 eck$LassoCheckResult]: Loop: 295#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 295#L10-2 [2019-01-14 02:18:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2019-01-14 02:18:50,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:50,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:50,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:50,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2019-01-14 02:18:50,880 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:50,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:50,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:18:50,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:50,885 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2019-01-14 02:18:50,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:18:50,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:18:50,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:18:50,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:18:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:18:51,015 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:51,015 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:51,015 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:51,015 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:51,016 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:18:51,017 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:51,017 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:51,017 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:51,017 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-14 02:18:51,017 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:51,018 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:51,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:51,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:51,062 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:51,063 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 [2019-01-14 02:18:51,069 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:18:51,069 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 [2019-01-14 02:18:51,093 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:18:51,093 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:18:51,137 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:18:51,141 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:18:51,141 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:18:51,141 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:18:51,141 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:18:51,142 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:18:51,142 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:18:51,142 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:18:51,142 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:18:51,142 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2019-01-14 02:18:51,142 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:18:51,142 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:18:51,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:51,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:18:51,211 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:18:51,212 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:18:51,212 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:18:51,213 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:18:51,213 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:18:51,213 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:18:51,213 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:18:51,213 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:18:51,215 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:18:51,215 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:18:51,218 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:18:51,220 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:18:51,220 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:18:51,220 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:18:51,220 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:18:51,221 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:18:51,222 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-01-14 02:18:51,222 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:18:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:51,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:51,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:51,333 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 [2019-01-14 02:18:51,333 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-01-14 02:18:51,394 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. [2019-01-14 02:18:51,396 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 [2019-01-14 02:18:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:18:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-01-14 02:18:51,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-01-14 02:18:51,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:51,397 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-14 02:18:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:51,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:51,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:51,534 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 [2019-01-14 02:18:51,535 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-01-14 02:18:51,630 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. [2019-01-14 02:18:51,632 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 [2019-01-14 02:18:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:18:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-01-14 02:18:51,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-01-14 02:18:51,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:51,636 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-14 02:18:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:18:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:51,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:18:51,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:18:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:18:51,734 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 [2019-01-14 02:18:51,734 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-01-14 02:18:51,786 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. [2019-01-14 02:18:51,787 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 [2019-01-14 02:18:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:18:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-01-14 02:18:51,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2019-01-14 02:18:51,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:51,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2019-01-14 02:18:51,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:51,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2019-01-14 02:18:51,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:18:51,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2019-01-14 02:18:51,794 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:18:51,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-01-14 02:18:51,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-14 02:18:51,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-14 02:18:51,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-14 02:18:51,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 02:18:51,796 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:18:51,797 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:18:51,797 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:18:51,797 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-14 02:18:51,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-14 02:18:51,797 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:18:51,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-14 02:18:51,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 02:18:51 BoogieIcfgContainer [2019-01-14 02:18:51,805 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 02:18:51,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 02:18:51,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 02:18:51,806 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 02:18:51,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:18:46" (3/4) ... [2019-01-14 02:18:51,810 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 02:18:51,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 02:18:51,811 INFO L168 Benchmark]: Toolchain (without parser) took 6092.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.2 MB). Free memory was 952.7 MB in the beginning and 1.2 GB in the end (delta: -222.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:51,812 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:51,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.49 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:18:51,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.31 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:51,813 INFO L168 Benchmark]: Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:18:51,814 INFO L168 Benchmark]: RCFGBuilder took 424.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -195.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-01-14 02:18:51,815 INFO L168 Benchmark]: BuchiAutomizer took 5296.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -44.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:18:51,816 INFO L168 Benchmark]: Witness Printer took 4.54 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. [2019-01-14 02:18:51,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.49 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 40.31 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.08 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 424.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -195.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5296.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -44.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.54 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 5.1s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 3.7s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. 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: 234ms 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...