./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a755472942b72da612d26a2f3af20ed4332f07b5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-29 00:02:14,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-29 00:02:14,614 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-29 00:02:14,626 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-29 00:02:14,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-29 00:02:14,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-29 00:02:14,629 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-29 00:02:14,631 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-29 00:02:14,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-29 00:02:14,636 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-29 00:02:14,639 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-29 00:02:14,639 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-29 00:02:14,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-29 00:02:14,642 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-29 00:02:14,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-29 00:02:14,648 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-29 00:02:14,649 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-29 00:02:14,652 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-29 00:02:14,658 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-29 00:02:14,660 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-29 00:02:14,661 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-29 00:02:14,662 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-29 00:02:14,663 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-29 00:02:14,664 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-29 00:02:14,664 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-29 00:02:14,665 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-29 00:02:14,666 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-29 00:02:14,667 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-29 00:02:14,668 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-29 00:02:14,669 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-29 00:02:14,669 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-29 00:02:14,669 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-29 00:02:14,672 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-29 00:02:14,672 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-29 00:02:14,673 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-29 00:02:14,674 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-29 00:02:14,676 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-29 00:02:14,708 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-29 00:02:14,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-29 00:02:14,710 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-29 00:02:14,714 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-29 00:02:14,714 INFO L133 SettingsManager]: * Use SBE=true [2018-11-29 00:02:14,714 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-29 00:02:14,714 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-29 00:02:14,715 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-29 00:02:14,715 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-29 00:02:14,715 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-29 00:02:14,715 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-29 00:02:14,715 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-29 00:02:14,715 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-29 00:02:14,716 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-29 00:02:14,716 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-29 00:02:14,716 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-29 00:02:14,716 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-29 00:02:14,716 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-29 00:02:14,716 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-29 00:02:14,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-29 00:02:14,719 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-29 00:02:14,719 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-29 00:02:14,719 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-29 00:02:14,719 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-29 00:02:14,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-29 00:02:14,720 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-29 00:02:14,720 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-29 00:02:14,720 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-29 00:02:14,720 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-29 00:02:14,720 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-29 00:02:14,722 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-29 00:02:14,723 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-29 00:02:14,723 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a755472942b72da612d26a2f3af20ed4332f07b5 [2018-11-29 00:02:14,783 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-29 00:02:14,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-29 00:02:14,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-29 00:02:14,808 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-29 00:02:14,809 INFO L276 PluginConnector]: CDTParser initialized [2018-11-29 00:02:14,810 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c [2018-11-29 00:02:14,881 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad9982709/8ced842e7e604f78a113a70c89d1eca0/FLAG6b07e50a8 [2018-11-29 00:02:15,381 INFO L307 CDTParser]: Found 1 translation units. [2018-11-29 00:02:15,381 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive/MultCommutative_true-unreach-call_true-no-overflow_true-termination.c [2018-11-29 00:02:15,387 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad9982709/8ced842e7e604f78a113a70c89d1eca0/FLAG6b07e50a8 [2018-11-29 00:02:15,708 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad9982709/8ced842e7e604f78a113a70c89d1eca0 [2018-11-29 00:02:15,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-29 00:02:15,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-29 00:02:15,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-29 00:02:15,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-29 00:02:15,720 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-29 00:02:15,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:02:15" (1/1) ... [2018-11-29 00:02:15,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5530d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:15, skipping insertion in model container [2018-11-29 00:02:15,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:02:15" (1/1) ... [2018-11-29 00:02:15,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-29 00:02:15,757 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-29 00:02:15,960 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-29 00:02:15,964 INFO L191 MainTranslator]: Completed pre-run [2018-11-29 00:02:15,989 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-29 00:02:16,007 INFO L195 MainTranslator]: Completed translation [2018-11-29 00:02:16,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16 WrapperNode [2018-11-29 00:02:16,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-29 00:02:16,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-29 00:02:16,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-29 00:02:16,010 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-29 00:02:16,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-29 00:02:16,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-29 00:02:16,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-29 00:02:16,053 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-29 00:02:16,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... [2018-11-29 00:02:16,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-29 00:02:16,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-29 00:02:16,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-29 00:02:16,084 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-29 00:02:16,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2018-11-29 00:02:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2018-11-29 00:02:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-29 00:02:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-29 00:02:16,565 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-29 00:02:16,566 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-29 00:02:16,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:02:16 BoogieIcfgContainer [2018-11-29 00:02:16,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-29 00:02:16,567 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-29 00:02:16,567 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-29 00:02:16,578 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-29 00:02:16,579 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-29 00:02:16,579 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 12:02:15" (1/3) ... [2018-11-29 00:02:16,580 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16ac417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 12:02:16, skipping insertion in model container [2018-11-29 00:02:16,580 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-29 00:02:16,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:16" (2/3) ... [2018-11-29 00:02:16,581 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16ac417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 12:02:16, skipping insertion in model container [2018-11-29 00:02:16,581 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-29 00:02:16,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:02:16" (3/3) ... [2018-11-29 00:02:16,583 INFO L375 chiAutomizerObserver]: Analyzing ICFG MultCommutative_true-unreach-call_true-no-overflow_true-termination.c [2018-11-29 00:02:16,647 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-29 00:02:16,648 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-29 00:02:16,648 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-29 00:02:16,648 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-29 00:02:16,650 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-29 00:02:16,650 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-29 00:02:16,650 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-29 00:02:16,650 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-29 00:02:16,651 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-29 00:02:16,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-29 00:02:16,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-29 00:02:16,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:16,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:16,707 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-29 00:02:16,707 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-29 00:02:16,707 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-29 00:02:16,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-29 00:02:16,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-29 00:02:16,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:16,711 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:16,711 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-29 00:02:16,711 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-29 00:02:16,720 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L27true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L31true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 16#L34true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2018-11-29 00:02:16,720 INFO L796 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 6#L16true assume ~m < 0; 3#L17true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2018-11-29 00:02:16,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:16,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 1 times [2018-11-29 00:02:16,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:16,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:16,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:16,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:16,840 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 1 times [2018-11-29 00:02:16,840 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:16,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:16,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:16,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:16,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1527521652, now seen corresponding path program 1 times [2018-11-29 00:02:16,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:16,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:16,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:16,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:16,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-29 00:02:16,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-29 00:02:17,130 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:17,132 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:17,132 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:17,132 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:17,133 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:17,133 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,133 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:17,133 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:17,133 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-29 00:02:17,133 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:17,134 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:17,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,526 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:17,527 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,538 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,538 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,547 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,547 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,578 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,579 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,593 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,593 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,614 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,614 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,623 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,623 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,643 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,648 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,648 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,686 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,686 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,710 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,710 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,713 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:17,714 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,736 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:17,736 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,762 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:17,762 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:17,791 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:17,794 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:17,794 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:17,795 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:17,795 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:17,795 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:17,795 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:17,795 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:17,795 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:17,795 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-29 00:02:17,795 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:17,796 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:17,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:17,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:18,033 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:18,039 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:18,041 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:18,043 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:18,043 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:18,044 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:18,044 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:18,045 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:18,047 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:18,047 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:18,050 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:18,050 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:18,051 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:18,051 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:18,051 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:18,052 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:18,052 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:18,052 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:18,053 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:18,054 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:18,055 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:18,055 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:18,055 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:18,056 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:18,056 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:18,056 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:18,057 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:18,057 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:18,058 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:18,059 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:18,059 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:18,059 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:18,060 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:18,060 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:18,060 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:18,061 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:18,061 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:18,062 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:18,063 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:18,063 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:18,064 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:18,064 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:18,064 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:18,064 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:18,065 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:18,065 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:18,066 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:18,067 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:18,068 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:18,068 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:18,068 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:18,068 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:18,068 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:18,069 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:18,069 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:18,071 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:18,072 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:18,072 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:18,073 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:18,073 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:18,073 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:18,073 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:18,074 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:18,074 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:18,080 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:18,085 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-29 00:02:18,085 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-29 00:02:18,087 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:18,088 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-29 00:02:18,088 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:18,089 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-11-29 00:02:18,090 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-29 00:02:18,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:18,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:18,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:18,565 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-29 00:02:18,567 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 4 states. [2018-11-29 00:02:19,034 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states.. Second operand 4 states. Result 50 states and 65 transitions. Complement of second has 12 states. [2018-11-29 00:02:19,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-29 00:02:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-29 00:02:19,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-29 00:02:19,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:19,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-29 00:02:19,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:19,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-29 00:02:19,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:19,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 65 transitions. [2018-11-29 00:02:19,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-29 00:02:19,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 31 states and 44 transitions. [2018-11-29 00:02:19,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-11-29 00:02:19,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-29 00:02:19,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 44 transitions. [2018-11-29 00:02:19,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:19,087 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2018-11-29 00:02:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 44 transitions. [2018-11-29 00:02:19,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-11-29 00:02:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-29 00:02:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2018-11-29 00:02:19,139 INFO L728 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2018-11-29 00:02:19,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-29 00:02:19,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-29 00:02:19,146 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 5 states. [2018-11-29 00:02:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:19,321 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2018-11-29 00:02:19,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-29 00:02:19,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2018-11-29 00:02:19,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-29 00:02:19,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 33 transitions. [2018-11-29 00:02:19,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-29 00:02:19,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-29 00:02:19,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 33 transitions. [2018-11-29 00:02:19,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-29 00:02:19,328 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2018-11-29 00:02:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 33 transitions. [2018-11-29 00:02:19,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-11-29 00:02:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-29 00:02:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2018-11-29 00:02:19,333 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2018-11-29 00:02:19,333 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2018-11-29 00:02:19,333 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-29 00:02:19,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2018-11-29 00:02:19,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-29 00:02:19,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:19,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:19,335 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:19,335 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-29 00:02:19,336 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 197#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 198#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 192#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 191#multENTRY ~n := #in~n;~m := #in~m; 193#L16 assume !(~m < 0); 194#L19 assume !(0 == ~m); 187#L22 call #t~ret1 := mult(~n, ~m - 1);< 190#multENTRY [2018-11-29 00:02:19,336 INFO L796 eck$LassoCheckResult]: Loop: 190#multENTRY ~n := #in~n;~m := #in~m; 205#L16 assume ~m < 0; 186#L17 call #t~ret0 := mult(~n, -~m);< 190#multENTRY [2018-11-29 00:02:19,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:19,336 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 1 times [2018-11-29 00:02:19,337 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:19,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:19,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:19,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:19,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:19,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 2 times [2018-11-29 00:02:19,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:19,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:19,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:19,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:19,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:19,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:19,368 INFO L82 PathProgramCache]: Analyzing trace with hash 924096870, now seen corresponding path program 1 times [2018-11-29 00:02:19,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:19,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:19,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:19,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:19,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:19,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-29 00:02:19,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-29 00:02:19,575 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:19,575 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:19,575 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:19,575 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:19,576 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:19,576 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,576 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:19,576 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:19,576 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-29 00:02:19,576 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:19,577 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:19,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,669 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:19,669 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,673 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:19,673 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:19,677 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:19,677 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,700 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:19,700 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:19,702 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:19,703 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,725 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:19,725 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:19,727 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:19,727 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,749 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:19,749 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:19,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:19,753 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,776 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:19,776 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:19,779 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:19,779 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=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) [2018-11-29 00:02:19,800 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:19,800 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,804 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:19,805 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,826 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:19,827 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,850 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:19,850 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:19,880 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:19,882 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:19,882 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:19,882 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:19,882 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:19,882 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:19,882 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:19,882 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:19,883 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:19,883 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-29 00:02:19,883 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:19,883 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:19,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:19,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,001 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:20,002 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:20,003 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:20,004 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:20,004 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:20,004 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:20,004 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:20,004 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:20,005 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:20,005 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:20,007 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:20,007 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:20,008 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:20,008 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:20,008 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:20,009 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:20,009 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:20,009 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:20,009 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:20,011 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:20,011 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:20,012 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:20,012 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:20,012 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:20,012 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:20,012 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:20,013 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:20,013 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:20,014 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:20,015 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:20,015 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:20,015 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:20,016 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:20,016 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:20,016 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:20,016 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:20,017 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:20,018 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:20,018 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:20,019 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:20,019 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:20,019 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:20,019 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:20,019 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:20,020 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:20,020 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:20,028 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:20,028 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:20,029 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:20,029 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:20,029 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:20,030 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:20,032 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:20,032 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:20,032 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:20,039 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:20,042 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-29 00:02:20,042 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-29 00:02:20,042 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:20,043 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-29 00:02:20,047 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:20,047 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-11-29 00:02:20,047 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-29 00:02:20,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:20,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:20,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:20,263 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-29 00:02:20,264 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-29 00:02:20,482 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 72 states and 91 transitions. Complement of second has 15 states. [2018-11-29 00:02:20,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-29 00:02:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2018-11-29 00:02:20,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-29 00:02:20,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:20,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-29 00:02:20,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:20,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-29 00:02:20,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:20,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 91 transitions. [2018-11-29 00:02:20,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-29 00:02:20,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 50 states and 65 transitions. [2018-11-29 00:02:20,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2018-11-29 00:02:20,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2018-11-29 00:02:20,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 65 transitions. [2018-11-29 00:02:20,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:20,495 INFO L705 BuchiCegarLoop]: Abstraction has 50 states and 65 transitions. [2018-11-29 00:02:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 65 transitions. [2018-11-29 00:02:20,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2018-11-29 00:02:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-29 00:02:20,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2018-11-29 00:02:20,502 INFO L728 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-11-29 00:02:20,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-29 00:02:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-29 00:02:20,503 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 5 states. [2018-11-29 00:02:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:20,586 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-11-29 00:02:20,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-29 00:02:20,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 59 transitions. [2018-11-29 00:02:20,590 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-11-29 00:02:20,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 47 transitions. [2018-11-29 00:02:20,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-29 00:02:20,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-29 00:02:20,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 47 transitions. [2018-11-29 00:02:20,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-29 00:02:20,593 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-29 00:02:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 47 transitions. [2018-11-29 00:02:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-29 00:02:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-29 00:02:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-29 00:02:20,600 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-29 00:02:20,600 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-29 00:02:20,600 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-29 00:02:20,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 47 transitions. [2018-11-29 00:02:20,601 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-11-29 00:02:20,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:20,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:20,603 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:20,603 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-29 00:02:20,603 INFO L794 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 458#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 459#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 460#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 467#multENTRY ~n := #in~n;~m := #in~m; 479#L16 assume !(~m < 0); 476#L19 assume 0 == ~m;#res := 0; 475#multFINAL assume true; 469#multEXIT >#45#return; 466#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 451#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 452#multENTRY [2018-11-29 00:02:20,603 INFO L796 eck$LassoCheckResult]: Loop: 452#multENTRY ~n := #in~n;~m := #in~m; 474#L16 assume ~m < 0; 450#L17 call #t~ret0 := mult(~n, -~m);< 452#multENTRY [2018-11-29 00:02:20,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:20,604 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 1 times [2018-11-29 00:02:20,604 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:20,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:20,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:20,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:20,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:20,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:20,629 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 3 times [2018-11-29 00:02:20,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:20,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:20,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:20,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:20,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:20,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1370471320, now seen corresponding path program 1 times [2018-11-29 00:02:20,636 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:20,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:20,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:20,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:20,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:20,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-29 00:02:20,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-29 00:02:20,752 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:20,753 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:20,753 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:20,753 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:20,753 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:20,754 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:20,754 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:20,754 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:20,754 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-29 00:02:20,754 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:20,755 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:20,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:20,859 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:20,860 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:20,863 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:20,863 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:20,866 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:20,866 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:20,888 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:20,888 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:20,893 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:20,893 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:20,915 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:20,915 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:20,917 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:20,918 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:20,940 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:20,940 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:20,943 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:20,943 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:20,992 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:20,992 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 [2018-11-29 00:02:21,027 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:21,027 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:21,058 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:21,060 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:21,060 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:21,060 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:21,060 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:21,060 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:21,060 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,060 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:21,060 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:21,061 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-29 00:02:21,061 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:21,061 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:21,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,139 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:21,139 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:21,140 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,140 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,140 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,141 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,141 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,141 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,141 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,141 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,143 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:21,143 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,144 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,144 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,144 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,144 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,145 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,145 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,146 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:21,146 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,147 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,147 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,147 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,147 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,147 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,148 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,148 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,149 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:21,149 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,150 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,150 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,150 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,150 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,150 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,150 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,151 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,151 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:21,152 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,152 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,152 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,153 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,153 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,153 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,153 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,153 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,157 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:21,159 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-29 00:02:21,159 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-29 00:02:21,159 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:21,160 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-29 00:02:21,160 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:21,160 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-11-29 00:02:21,160 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-29 00:02:21,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:21,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:21,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:21,312 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-29 00:02:21,312 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9 Second operand 5 states. [2018-11-29 00:02:21,414 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 81 states and 90 transitions. Complement of second has 14 states. [2018-11-29 00:02:21,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-29 00:02:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2018-11-29 00:02:21,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-29 00:02:21,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:21,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2018-11-29 00:02:21,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:21,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 6 letters. [2018-11-29 00:02:21,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:21,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 90 transitions. [2018-11-29 00:02:21,423 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-29 00:02:21,426 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 62 states and 70 transitions. [2018-11-29 00:02:21,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2018-11-29 00:02:21,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2018-11-29 00:02:21,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 70 transitions. [2018-11-29 00:02:21,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-29 00:02:21,427 INFO L705 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2018-11-29 00:02:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 70 transitions. [2018-11-29 00:02:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2018-11-29 00:02:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-29 00:02:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2018-11-29 00:02:21,432 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 41 transitions. [2018-11-29 00:02:21,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-29 00:02:21,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-29 00:02:21,433 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2018-11-29 00:02:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-29 00:02:21,479 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-29 00:02:21,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-29 00:02:21,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2018-11-29 00:02:21,482 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-29 00:02:21,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 39 transitions. [2018-11-29 00:02:21,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-29 00:02:21,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-29 00:02:21,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 39 transitions. [2018-11-29 00:02:21,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-29 00:02:21,484 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-11-29 00:02:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 39 transitions. [2018-11-29 00:02:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-11-29 00:02:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-29 00:02:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-11-29 00:02:21,488 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-11-29 00:02:21,488 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-11-29 00:02:21,488 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-29 00:02:21,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2018-11-29 00:02:21,489 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-29 00:02:21,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:21,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:21,490 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-29 00:02:21,490 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:02:21,490 INFO L794 eck$LassoCheckResult]: Stem: 736#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 733#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 734#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 735#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 742#multENTRY ~n := #in~n;~m := #in~m; 749#L16 assume !(~m < 0); 747#L19 assume 0 == ~m;#res := 0; 746#multFINAL assume true; 745#multEXIT >#45#return; 741#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 729#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 728#multENTRY [2018-11-29 00:02:21,490 INFO L796 eck$LassoCheckResult]: Loop: 728#multENTRY ~n := #in~n;~m := #in~m; 730#L16 assume !(~m < 0); 732#L19 assume !(0 == ~m); 731#L22 call #t~ret1 := mult(~n, ~m - 1);< 728#multENTRY [2018-11-29 00:02:21,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 2 times [2018-11-29 00:02:21,491 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:21,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:21,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:21,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:21,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:21,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:21,505 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 1 times [2018-11-29 00:02:21,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:21,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:21,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:21,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:21,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:21,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:21,511 INFO L82 PathProgramCache]: Analyzing trace with hash 465064035, now seen corresponding path program 1 times [2018-11-29 00:02:21,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:21,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:21,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:21,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:21,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:21,604 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:21,604 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:21,604 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:21,604 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:21,604 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:21,605 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,605 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:21,605 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:21,605 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-29 00:02:21,605 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:21,605 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:21,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,699 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:21,699 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,704 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:21,705 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:21,707 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:21,708 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,729 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:21,729 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:21,733 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:21,733 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,753 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:21,754 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:21,756 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:21,757 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,781 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:21,781 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,806 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:21,807 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:21,828 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:21,830 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:21,830 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:21,830 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:21,831 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:21,831 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:21,831 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:21,831 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:21,831 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:21,831 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-29 00:02:21,831 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:21,831 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:21,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:21,959 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:21,960 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:21,960 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,963 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,963 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,963 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,963 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,965 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,965 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,966 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:21,967 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,968 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,968 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,968 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,969 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,969 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,969 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,969 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,970 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:21,970 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:21,979 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:21,979 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:21,980 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:21,980 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:21,980 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:21,980 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:21,980 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:21,990 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:21,995 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-29 00:02:21,996 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-29 00:02:21,996 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:21,996 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-29 00:02:21,996 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:21,996 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2018-11-29 00:02:21,997 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-29 00:02:22,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:22,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:22,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:22,145 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-29 00:02:22,146 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6 Second operand 5 states. [2018-11-29 00:02:22,218 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6. Second operand 5 states. Result 41 states and 45 transitions. Complement of second has 13 states. [2018-11-29 00:02:22,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-29 00:02:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-29 00:02:22,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-29 00:02:22,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:22,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-29 00:02:22,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:22,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-29 00:02:22,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:22,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 45 transitions. [2018-11-29 00:02:22,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-29 00:02:22,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 15 states and 15 transitions. [2018-11-29 00:02:22,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-29 00:02:22,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-29 00:02:22,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 15 transitions. [2018-11-29 00:02:22,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-29 00:02:22,225 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-29 00:02:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 15 transitions. [2018-11-29 00:02:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2018-11-29 00:02:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-29 00:02:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-11-29 00:02:22,226 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-11-29 00:02:22,226 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-11-29 00:02:22,226 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-29 00:02:22,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 8 transitions. [2018-11-29 00:02:22,227 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-29 00:02:22,227 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-29 00:02:22,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-29 00:02:22,227 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-29 00:02:22,227 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-29 00:02:22,227 INFO L794 eck$LassoCheckResult]: Stem: 887#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 888#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 881#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 882#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 883#multENTRY [2018-11-29 00:02:22,227 INFO L796 eck$LassoCheckResult]: Loop: 883#multENTRY ~n := #in~n;~m := #in~m; 885#L16 assume !(~m < 0); 886#L19 assume !(0 == ~m); 884#L22 call #t~ret1 := mult(~n, ~m - 1);< 883#multENTRY [2018-11-29 00:02:22,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 2 times [2018-11-29 00:02:22,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:22,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:22,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:22,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-29 00:02:22,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:22,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:22,236 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 2 times [2018-11-29 00:02:22,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:22,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:22,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:22,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:22,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:22,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:22,242 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 2 times [2018-11-29 00:02:22,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-29 00:02:22,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-29 00:02:22,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:22,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-29 00:02:22,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-29 00:02:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-29 00:02:22,346 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:22,346 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:22,347 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:22,347 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:22,347 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-29 00:02:22,347 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,347 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:22,347 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:22,348 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-29 00:02:22,348 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:22,348 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:22,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,437 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:22,437 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,441 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:22,441 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:22,443 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:22,443 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,465 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:22,465 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:22,467 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:22,467 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-29 00:02:22,505 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:22,505 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,509 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:22,510 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,530 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:22,530 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:22,533 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:22,533 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,554 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:22,554 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:22,556 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-29 00:02:22,557 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,577 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-29 00:02:22,577 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,599 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-29 00:02:22,599 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-29 00:02:22,621 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-29 00:02:22,623 INFO L216 LassoAnalysis]: Preferences: [2018-11-29 00:02:22,623 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-29 00:02:22,623 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-29 00:02:22,623 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-29 00:02:22,623 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-29 00:02:22,623 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-29 00:02:22,623 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-29 00:02:22,623 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-29 00:02:22,623 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-29 00:02:22,624 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-29 00:02:22,624 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-29 00:02:22,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-29 00:02:22,739 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-29 00:02:22,739 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-29 00:02:22,740 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:22,741 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:22,741 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:22,741 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:22,741 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:22,741 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:22,746 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:22,746 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:22,747 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:22,747 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:22,748 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:22,748 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:22,748 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:22,748 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:22,748 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:22,749 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:22,749 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:22,750 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:22,750 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:22,751 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:22,751 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:22,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:22,751 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:22,751 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:22,752 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:22,752 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:22,753 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:22,753 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:22,754 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:22,754 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:22,754 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:22,754 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:22,755 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:22,755 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:22,755 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:22,756 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:22,756 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:22,757 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:22,757 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:22,757 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:22,757 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:22,758 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:22,758 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:22,758 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:22,759 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-29 00:02:22,759 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-29 00:02:22,760 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-29 00:02:22,760 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-29 00:02:22,760 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-29 00:02:22,760 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-29 00:02:22,760 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-29 00:02:22,761 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-29 00:02:22,761 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-29 00:02:22,764 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-29 00:02:22,766 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-29 00:02:22,767 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-29 00:02:22,767 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-29 00:02:22,767 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-29 00:02:22,767 INFO L518 LassoAnalysis]: Proved termination. [2018-11-29 00:02:22,768 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2018-11-29 00:02:22,768 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-29 00:02:22,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-29 00:02:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:22,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-29 00:02:22,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-29 00:02:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-29 00:02:22,925 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-29 00:02:22,925 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1 Second operand 4 states. [2018-11-29 00:02:22,979 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1. Second operand 4 states. Result 18 states and 18 transitions. Complement of second has 11 states. [2018-11-29 00:02:22,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-29 00:02:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-29 00:02:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-29 00:02:22,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-29 00:02:22,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:22,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-29 00:02:22,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:22,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-29 00:02:22,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-29 00:02:22,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 18 transitions. [2018-11-29 00:02:22,983 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-29 00:02:22,983 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2018-11-29 00:02:22,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-29 00:02:22,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-29 00:02:22,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-29 00:02:22,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-29 00:02:22,987 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-29 00:02:22,987 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-29 00:02:22,987 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-29 00:02:22,987 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-29 00:02:22,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-29 00:02:22,987 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-29 00:02:22,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-29 00:02:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 12:02:22 BoogieIcfgContainer [2018-11-29 00:02:22,995 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-29 00:02:22,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-29 00:02:22,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-29 00:02:22,995 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-29 00:02:22,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:02:16" (3/4) ... [2018-11-29 00:02:23,000 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-29 00:02:23,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-29 00:02:23,001 INFO L168 Benchmark]: Toolchain (without parser) took 7287.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.2 MB). Free memory was 948.7 MB in the beginning and 963.7 MB in the end (delta: -15.0 MB). Peak memory consumption was 194.1 MB. Max. memory is 11.5 GB. [2018-11-29 00:02:23,003 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-29 00:02:23,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.12 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-29 00:02:23,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.24 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-29 00:02:23,005 INFO L168 Benchmark]: Boogie Preprocessor took 30.42 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-29 00:02:23,006 INFO L168 Benchmark]: RCFGBuilder took 482.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-11-29 00:02:23,006 INFO L168 Benchmark]: BuchiAutomizer took 6427.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 963.7 MB in the end (delta: 148.4 MB). Peak memory consumption was 220.8 MB. Max. memory is 11.5 GB. [2018-11-29 00:02:23,007 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 1.2 GB. Free memory is still 963.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-29 00:02:23,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 293.12 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 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 43.24 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.42 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 482.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6427.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 963.7 MB in the end (delta: 148.4 MB). Peak memory consumption was 220.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.18 ms. Allocated memory is still 1.2 GB. Free memory is still 963.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.3s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.7s. Construction of modules took 0.6s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 41 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 120 SDtfs, 138 SDslu, 102 SDs, 0 SdLazy, 159 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf94 smp87 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 24 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...