./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dd635190a9aa277670265f46b90ecce0c321a2a9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:15:46,021 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:46,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:46,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:46,042 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:46,044 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:46,045 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:46,049 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:46,051 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:46,053 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:46,055 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:46,056 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:46,058 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:46,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:46,069 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:46,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:46,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:46,074 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:46,079 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:46,080 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:46,083 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:46,086 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:46,090 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:46,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:46,094 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:46,095 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:46,096 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:46,097 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:46,097 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:46,101 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:46,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:46,104 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:46,104 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:46,104 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:46,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:46,108 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:46,110 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:46,139 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:46,140 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:46,142 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:46,143 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:46,143 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:46,143 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:46,144 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:46,145 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:46,145 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:46,145 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:46,145 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:46,145 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:46,146 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:46,146 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:46,147 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:46,147 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:46,147 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:46,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:46,149 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:46,149 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:46,150 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:46,150 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:46,150 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:46,150 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:46,150 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:46,150 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:46,152 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:46,152 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:46,153 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:46,153 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2018-11-28 23:15:46,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:46,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:46,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:46,235 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:46,236 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:46,236 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c [2018-11-28 23:15:46,294 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711e0ed08/d097a705d7f14bc791283c098c9efaf6/FLAGf041fe210 [2018-11-28 23:15:46,740 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:46,742 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c [2018-11-28 23:15:46,756 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711e0ed08/d097a705d7f14bc791283c098c9efaf6/FLAGf041fe210 [2018-11-28 23:15:47,072 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711e0ed08/d097a705d7f14bc791283c098c9efaf6 [2018-11-28 23:15:47,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:47,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:47,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:47,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:47,084 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:47,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2741035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47, skipping insertion in model container [2018-11-28 23:15:47,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:47,118 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:47,305 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:47,311 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:47,336 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:47,354 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:47,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47 WrapperNode [2018-11-28 23:15:47,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:47,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:47,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:47,355 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:47,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:47,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:47,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:47,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:47,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... [2018-11-28 23:15:47,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:47,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:47,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:47,422 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:47,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2018-11-28 23:15:47,596 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2018-11-28 23:15:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:47,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:47,997 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:47,998 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 23:15:47,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:47 BoogieIcfgContainer [2018-11-28 23:15:47,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:47,999 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:47,999 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:48,004 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:48,006 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:48,006 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:47" (1/3) ... [2018-11-28 23:15:48,007 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e2e07a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:48, skipping insertion in model container [2018-11-28 23:15:48,007 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:48,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:47" (2/3) ... [2018-11-28 23:15:48,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e2e07a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:48, skipping insertion in model container [2018-11-28 23:15:48,008 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:48,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:47" (3/3) ... [2018-11-28 23:15:48,010 INFO L375 chiAutomizerObserver]: Analyzing ICFG TwoWay_true-termination_true-no-overflow.c [2018-11-28 23:15:48,109 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:48,110 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:48,110 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:48,110 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:48,111 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:48,111 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:48,111 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:48,111 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:48,111 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:48,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-28 23:15:48,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:48,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:48,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:48,166 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:48,166 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:15:48,166 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:48,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-28 23:15:48,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:48,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:48,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:48,170 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:48,170 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:15:48,177 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 9#L42true assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 15#L45true assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L48true call main_#t~ret6 := twoWay(1, main_~x~0);< 11#twoWayENTRYtrue [2018-11-28 23:15:48,178 INFO L796 eck$LassoCheckResult]: Loop: 11#twoWayENTRYtrue ~terminate := #in~terminate;~n := #in~n; 17#L27true assume !(~n < 0);~m~0 := ~n; 8#L31true assume 0 != ~terminate;#t~post0 := ~m~0;~m~0 := #t~post0 - 1;havoc #t~post0; 6#L31-2true call #t~ret2 := twoWay(~terminate, ~m~0);< 11#twoWayENTRYtrue [2018-11-28 23:15:48,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1390414, now seen corresponding path program 1 times [2018-11-28 23:15:48,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:48,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:48,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:48,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:48,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:48,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:48,301 INFO L82 PathProgramCache]: Analyzing trace with hash 927613, now seen corresponding path program 1 times [2018-11-28 23:15:48,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:48,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:48,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:48,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:48,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:48,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:48,322 INFO L82 PathProgramCache]: Analyzing trace with hash -118689718, now seen corresponding path program 1 times [2018-11-28 23:15:48,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:48,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:48,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:48,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:48,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:48,495 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-28 23:15:48,630 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:48,631 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:48,631 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:48,631 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:48,631 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:48,632 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:48,632 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:48,632 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:48,632 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:48,632 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:48,633 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:48,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:48,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,072 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:49,072 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:49,079 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:49,079 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:49,087 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:49,088 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~ret2=0} Honda state: {twoWay_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:49,109 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:49,109 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:49,119 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:49,120 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_~m~0=0} Honda state: {twoWay_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:49,140 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:49,140 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:49,164 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:49,164 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#res=0} Honda state: {twoWay_#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 [2018-11-28 23:15:49,189 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:49,189 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:49,195 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:49,195 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_~n=0} Honda state: {twoWay_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:49,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:49,218 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:49,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:49,247 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:49,301 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:49,303 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:49,303 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:49,303 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:49,303 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:49,303 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:49,304 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:49,304 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:49,304 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:49,304 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:49,304 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:49,305 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:49,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:49,713 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:49,718 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:49,719 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:49,721 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:49,721 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:49,722 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:49,722 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:49,722 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:49,725 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:49,725 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:49,729 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:49,730 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:49,731 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:49,731 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:49,731 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:49,731 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:49,731 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:49,732 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:49,732 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:49,734 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:49,735 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:49,736 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:49,736 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:49,736 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:49,736 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:49,736 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:49,737 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:49,737 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:49,744 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:49,749 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:49,749 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:15:49,752 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:49,752 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:49,752 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:49,753 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_#in~n) = 2*twoWay_#in~n + 1 Supporting invariants [] [2018-11-28 23:15:49,754 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:50,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:50,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:50,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:50,285 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 23:15:50,286 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2018-11-28 23:15:50,643 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:15:51,119 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 44 states and 56 transitions. Complement of second has 16 states. [2018-11-28 23:15:51,120 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 [2018-11-28 23:15:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:15:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2018-11-28 23:15:51,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 23:15:51,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:51,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 23:15:51,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:51,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-28 23:15:51,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:51,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2018-11-28 23:15:51,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:51,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 22 states and 25 transitions. [2018-11-28 23:15:51,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 23:15:51,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-28 23:15:51,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2018-11-28 23:15:51,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:51,147 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-28 23:15:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2018-11-28 23:15:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2018-11-28 23:15:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 23:15:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-28 23:15:51,177 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-28 23:15:51,177 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-28 23:15:51,177 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:51,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-28 23:15:51,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:51,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:51,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:51,179 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:15:51,179 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:15:51,179 INFO L794 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L42 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 126#L45 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 128#L48 call main_#t~ret6 := twoWay(1, main_~x~0);< 129#twoWayENTRY ~terminate := #in~terminate;~n := #in~n; 136#L27 assume !(~n < 0);~m~0 := ~n; 137#L31 assume !(0 != ~terminate);#t~post1 := ~m~0;~m~0 := 1 + #t~post1;havoc #t~post1; 131#L31-2 [2018-11-28 23:15:51,179 INFO L796 eck$LassoCheckResult]: Loop: 131#L31-2 call #t~ret2 := twoWay(~terminate, ~m~0);< 130#twoWayENTRY ~terminate := #in~terminate;~n := #in~n; 132#L27 assume !(~n < 0);~m~0 := ~n; 139#L31 assume 0 != ~terminate;#t~post0 := ~m~0;~m~0 := #t~post0 - 1;havoc #t~post0; 131#L31-2 [2018-11-28 23:15:51,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:51,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1527849353, now seen corresponding path program 1 times [2018-11-28 23:15:51,180 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:51,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:51,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:51,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:51,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:51,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:15:51,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:15:51,245 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:15:51,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:51,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1847173, now seen corresponding path program 2 times [2018-11-28 23:15:51,245 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:51,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:51,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:51,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:51,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:51,397 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:51,398 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:51,398 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:51,398 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:51,399 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:51,399 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:51,399 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:51,399 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:51,400 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:51,400 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:51,400 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:51,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:51,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:51,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:51,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:51,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:51,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:51,776 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 23:15:51,777 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:51,778 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:51,785 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:51,785 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:51,788 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:51,789 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~ret2=0} Honda state: {twoWay_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2018-11-28 23:15:51,812 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:51,812 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:51,814 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:51,814 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~post0=0} Honda state: {twoWay_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:51,836 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:51,837 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:51,842 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:51,842 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~post1=0} Honda state: {twoWay_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:51,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:51,862 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:51,868 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:51,868 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#res=0} Honda state: {twoWay_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:51,899 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:51,899 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:51,919 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:51,920 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#in~terminate=7, twoWay_~terminate=7} Honda state: {twoWay_#in~terminate=7, twoWay_~terminate=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:51,949 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:51,949 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:51,976 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:51,976 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:04,010 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 23:16:04,013 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:04,013 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:04,014 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:04,014 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:04,014 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:04,014 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:04,014 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:04,014 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:04,014 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:04,015 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:04,015 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:04,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:04,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:04,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:04,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:04,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:04,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:04,243 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:04,243 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:04,243 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:04,244 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,245 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,245 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,245 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:04,245 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,246 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:04,246 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,247 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:04,248 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:04,248 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,248 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,249 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:04,249 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,249 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:04,250 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,254 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:04,254 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:04,255 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,255 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,255 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,255 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:16:04,256 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,259 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:16:04,260 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,269 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:04,270 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:04,271 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,271 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,271 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,271 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:04,271 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,274 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:04,274 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,276 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:04,277 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:04,277 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,277 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,279 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,279 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:04,280 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,280 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:04,280 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,283 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:04,283 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:04,284 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,284 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,284 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,284 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:04,284 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,287 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:04,287 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,296 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:04,302 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:04,303 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:16:04,303 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:04,304 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:04,304 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:04,304 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_~m~0) = 2*twoWay_~m~0 + 1 Supporting invariants [] [2018-11-28 23:16:04,304 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:04,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:04,459 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 23:16:04,459 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-11-28 23:16:04,599 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 11 states. [2018-11-28 23:16:04,601 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 [2018-11-28 23:16:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:16:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2018-11-28 23:16:04,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-28 23:16:04,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 23:16:04,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 23:16:04,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,604 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2018-11-28 23:16:04,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:16:04,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2018-11-28 23:16:04,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-28 23:16:04,609 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-28 23:16:04,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2018-11-28 23:16:04,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:04,609 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-28 23:16:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2018-11-28 23:16:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-28 23:16:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 23:16:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-28 23:16:04,614 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-28 23:16:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:16:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:16:04,619 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2018-11-28 23:16:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:04,644 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-28 23:16:04,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:16:04,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-28 23:16:04,646 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:04,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2018-11-28 23:16:04,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:04,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:04,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:04,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:04,647 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,647 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,647 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,647 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:04,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:04,648 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:04,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:04,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:04 BoogieIcfgContainer [2018-11-28 23:16:04,655 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:04,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:04,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:04,656 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:04,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:47" (3/4) ... [2018-11-28 23:16:04,662 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:04,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:04,663 INFO L168 Benchmark]: Toolchain (without parser) took 17585.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 952.7 MB in the beginning and 859.7 MB in the end (delta: 93.0 MB). Peak memory consumption was 230.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,664 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.71 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,665 INFO L168 Benchmark]: Boogie Preprocessor took 23.54 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,667 INFO L168 Benchmark]: RCFGBuilder took 576.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,668 INFO L168 Benchmark]: BuchiAutomizer took 16656.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.7 MB in the end (delta: 253.4 MB). Peak memory consumption was 253.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,669 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 1.2 GB. Free memory is still 859.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,674 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.71 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.54 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 576.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 16656.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.7 MB in the end (delta: 253.4 MB). Peak memory consumption was 253.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.62 ms. Allocated memory is still 1.2 GB. Free memory is still 859.7 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * \old(n) + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + 1 and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 14.7s. Construction of modules took 0.2s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 29 SDslu, 9 SDs, 0 SdLazy, 47 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf92 smp100 dnf137 smp100 tf106 neg93 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...