./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 02:16:39,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 02:16:39,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 02:16:39,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 02:16:39,485 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 02:16:39,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 02:16:39,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 02:16:39,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 02:16:39,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 02:16:39,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 02:16:39,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 02:16:39,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 02:16:39,495 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 02:16:39,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 02:16:39,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 02:16:39,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 02:16:39,500 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 02:16:39,502 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 02:16:39,504 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 02:16:39,506 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 02:16:39,507 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 02:16:39,509 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 02:16:39,511 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 02:16:39,512 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 02:16:39,512 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 02:16:39,513 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 02:16:39,514 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 02:16:39,515 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 02:16:39,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 02:16:39,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 02:16:39,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 02:16:39,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 02:16:39,520 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 02:16:39,520 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 02:16:39,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 02:16:39,522 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 02:16:39,523 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-14 02:16:39,550 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 02:16:39,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 02:16:39,552 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 02:16:39,552 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 02:16:39,552 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 02:16:39,552 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 02:16:39,552 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 02:16:39,553 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 02:16:39,554 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 02:16:39,554 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 02:16:39,555 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 02:16:39,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 02:16:39,555 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 02:16:39,555 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 02:16:39,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 02:16:39,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 02:16:39,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 02:16:39,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 02:16:39,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 02:16:39,557 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 02:16:39,557 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 02:16:39,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 02:16:39,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 02:16:39,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 02:16:39,558 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 02:16:39,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 02:16:39,558 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 02:16:39,558 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 02:16:39,561 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 02:16:39,562 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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2019-01-14 02:16:39,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 02:16:39,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 02:16:39,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 02:16:39,649 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 02:16:39,649 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 02:16:39,650 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2019-01-14 02:16:39,719 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0efccac69/55d52496006d4c02b0980c11d56c15ed/FLAG5994c80d5 [2019-01-14 02:16:40,113 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 02:16:40,114 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2019-01-14 02:16:40,120 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0efccac69/55d52496006d4c02b0980c11d56c15ed/FLAG5994c80d5 [2019-01-14 02:16:40,498 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0efccac69/55d52496006d4c02b0980c11d56c15ed [2019-01-14 02:16:40,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 02:16:40,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 02:16:40,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 02:16:40,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 02:16:40,508 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 02:16:40,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9a6a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40, skipping insertion in model container [2019-01-14 02:16:40,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 02:16:40,540 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 02:16:40,719 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:16:40,725 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 02:16:40,743 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:16:40,759 INFO L195 MainTranslator]: Completed translation [2019-01-14 02:16:40,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40 WrapperNode [2019-01-14 02:16:40,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 02:16:40,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 02:16:40,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 02:16:40,762 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 02:16:40,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 02:16:40,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 02:16:40,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 02:16:40,798 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 02:16:40,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... [2019-01-14 02:16:40,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 02:16:40,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 02:16:40,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 02:16:40,822 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 02:16:40,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 02:16:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 02:16:41,093 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 02:16:41,093 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 02:16:41,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:16:41 BoogieIcfgContainer [2019-01-14 02:16:41,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 02:16:41,095 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 02:16:41,095 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 02:16:41,098 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 02:16:41,099 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:16:41,099 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 02:16:40" (1/3) ... [2019-01-14 02:16:41,100 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e35a97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:16:41, skipping insertion in model container [2019-01-14 02:16:41,100 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:16:41,100 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:16:40" (2/3) ... [2019-01-14 02:16:41,101 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e35a97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:16:41, skipping insertion in model container [2019-01-14 02:16:41,101 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:16:41,101 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:16:41" (3/3) ... [2019-01-14 02:16:41,103 INFO L375 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2019-01-14 02:16:41,152 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 02:16:41,152 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 02:16:41,152 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 02:16:41,153 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 02:16:41,153 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 02:16:41,153 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 02:16:41,153 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 02:16:41,153 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 02:16:41,153 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 02:16:41,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-01-14 02:16:41,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-14 02:16:41,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:41,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:41,193 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:16:41,194 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:16:41,194 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 02:16:41,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-01-14 02:16:41,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-14 02:16:41,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:41,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:41,195 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:16:41,196 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:16:41,203 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 6#L18-2true [2019-01-14 02:16:41,203 INFO L796 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~y~0 >= 0); 9#L19true assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 7#L19-2true main_~x~0 := 1 + main_~x~0; 6#L18-2true [2019-01-14 02:16:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,210 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-14 02:16:41,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:41,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:41,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:41,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 39821, now seen corresponding path program 1 times [2019-01-14 02:16:41,291 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:41,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:41,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:41,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash 963342, now seen corresponding path program 1 times [2019-01-14 02:16:41,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:41,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:41,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:41,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:41,443 WARN L181 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-01-14 02:16:41,546 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:41,548 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:41,548 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:41,548 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:41,548 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:16:41,548 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,548 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:41,549 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:41,549 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2019-01-14 02:16:41,549 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:41,549 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:41,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:41,859 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:41,860 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,866 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:41,866 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:41,892 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:41,892 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,899 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:41,899 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:41,922 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:41,922 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,927 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:41,928 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:41,953 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:41,953 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:41,964 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:41,964 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=1}] Lambdas: [0, 0, 1] Nus: [0, 0] 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) [2019-01-14 02:16:42,010 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:42,013 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2019-01-14 02:16:42,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:42,062 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:42,116 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:16:42,118 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:42,119 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:42,119 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:42,119 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:42,119 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:16:42,119 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:42,119 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:42,120 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:42,120 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2019-01-14 02:16:42,120 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:42,120 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:42,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:42,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:42,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:42,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:42,349 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:42,354 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:16:42,355 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:42,357 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:42,358 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:42,358 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:42,358 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:42,366 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:42,366 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:42,375 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:42,376 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:42,377 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:42,377 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:42,377 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:42,377 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:42,381 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:42,381 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:42,391 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:42,392 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:42,393 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:42,393 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:42,394 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:42,394 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:42,394 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:42,396 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:16:42,396 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:42,403 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:42,403 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:42,404 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:42,404 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:42,404 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:42,405 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:42,405 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:42,406 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:16:42,406 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:42,414 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:16:42,420 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:16:42,420 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-01-14 02:16:42,423 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:16:42,423 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:16:42,423 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:16:42,424 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 101 Supporting invariants [] [2019-01-14 02:16:42,425 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:16:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:42,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:42,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:42,639 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:16:42,640 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-01-14 02:16:42,798 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 7 states. [2019-01-14 02:16:42,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-01-14 02:16:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-01-14 02:16:42,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-01-14 02:16:42,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-01-14 02:16:42,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-01-14 02:16:42,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:42,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2019-01-14 02:16:42,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-14 02:16:42,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 11 states and 14 transitions. [2019-01-14 02:16:42,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-01-14 02:16:42,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-01-14 02:16:42,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-01-14 02:16:42,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:16:42,820 INFO L706 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-01-14 02:16:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-01-14 02:16:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-01-14 02:16:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-14 02:16:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-01-14 02:16:42,851 INFO L729 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-01-14 02:16:42,851 INFO L609 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-01-14 02:16:42,851 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-14 02:16:42,852 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-01-14 02:16:42,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-14 02:16:42,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:42,853 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:42,854 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-14 02:16:42,854 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:16:42,854 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 77#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2019-01-14 02:16:42,855 INFO L796 eck$LassoCheckResult]: Loop: 73#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 78#L19-2 main_~x~0 := 1 + main_~x~0; 72#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2019-01-14 02:16:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-01-14 02:16:42,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:42,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:42,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:42,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:42,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:42,864 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 1 times [2019-01-14 02:16:42,864 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:42,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:42,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:42,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:42,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:42,878 INFO L82 PathProgramCache]: Analyzing trace with hash 29865534, now seen corresponding path program 1 times [2019-01-14 02:16:42,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:42,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:42,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:42,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:42,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:42,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 02:16:42,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 02:16:42,957 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:42,957 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:42,957 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:42,957 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:42,957 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:16:42,958 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:42,958 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:42,958 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:42,958 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2019-01-14 02:16:42,958 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:42,958 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:42,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,119 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:43,120 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 [2019-01-14 02:16:43,124 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:43,124 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:43,145 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:43,145 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=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 [2019-01-14 02:16:43,152 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:43,152 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:43,173 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:43,173 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} 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 [2019-01-14 02:16:43,188 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:43,189 INFO L163 nArgumentSynthesizer]: Using integer mode. 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) [2019-01-14 02:16:43,237 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:43,237 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:43,257 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2019-01-14 02:16:43,257 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=51} Honda state: {ULTIMATE.start_main_~x~0=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] 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) [2019-01-14 02:16:43,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:43,294 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-01-14 02:16:43,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:43,347 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:43,432 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:16:43,441 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:43,441 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:43,441 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:43,441 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:43,442 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:16:43,442 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:43,442 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:43,442 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:43,442 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2019-01-14 02:16:43,442 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:43,442 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:43,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:43,813 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:43,813 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:16:43,813 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:43,814 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:43,815 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:43,815 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:43,815 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:43,819 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:43,819 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:43,824 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:43,826 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:43,828 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:43,828 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:43,829 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:43,830 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:43,830 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:43,830 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:16:43,831 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:43,843 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:43,843 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:43,844 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:43,844 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:43,845 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:43,847 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:43,849 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-14 02:16:43,852 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-14 02:16:43,859 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-14 02:16:43,860 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:43,861 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:43,861 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:43,861 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:43,861 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:43,861 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:43,862 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:16:43,862 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:43,869 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:16:43,872 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:16:43,873 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:16:43,876 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:16:43,877 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:16:43,877 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:16:43,877 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-01-14 02:16:43,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:16:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:43,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:44,029 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:16:44,030 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-01-14 02:16:44,067 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2019-01-14 02:16:44,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-01-14 02:16:44,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 3 letters. [2019-01-14 02:16:44,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-14 02:16:44,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 6 letters. [2019-01-14 02:16:44,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,071 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2019-01-14 02:16:44,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-14 02:16:44,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2019-01-14 02:16:44,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-01-14 02:16:44,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-01-14 02:16:44,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2019-01-14 02:16:44,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:16:44,074 INFO L706 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-01-14 02:16:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2019-01-14 02:16:44,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-01-14 02:16:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-14 02:16:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-01-14 02:16:44,078 INFO L729 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-01-14 02:16:44,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 02:16:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 02:16:44,083 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2019-01-14 02:16:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 02:16:44,104 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-01-14 02:16:44,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 02:16:44,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-01-14 02:16:44,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-14 02:16:44,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2019-01-14 02:16:44,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-01-14 02:16:44,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-01-14 02:16:44,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-01-14 02:16:44,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-01-14 02:16:44,110 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-01-14 02:16:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-01-14 02:16:44,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-01-14 02:16:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-01-14 02:16:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-01-14 02:16:44,112 INFO L729 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-01-14 02:16:44,112 INFO L609 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-01-14 02:16:44,112 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2019-01-14 02:16:44,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-01-14 02:16:44,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-14 02:16:44,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:16:44,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:16:44,115 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-01-14 02:16:44,115 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:16:44,115 INFO L794 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 162#L18-2 assume !!(main_~y~0 >= 0); 163#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 171#L19-2 main_~x~0 := 1 + main_~x~0; 172#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2019-01-14 02:16:44,115 INFO L796 eck$LassoCheckResult]: Loop: 170#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 167#L19-2 main_~x~0 := 1 + main_~x~0; 168#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2019-01-14 02:16:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash 29863612, now seen corresponding path program 2 times [2019-01-14 02:16:44,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:44,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:44,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:44,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:44,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:44,125 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 2 times [2019-01-14 02:16:44,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:44,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:44,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:44,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:16:44,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:16:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:44,134 INFO L82 PathProgramCache]: Analyzing trace with hash 608649772, now seen corresponding path program 1 times [2019-01-14 02:16:44,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:16:44,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:16:44,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:44,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 02:16:44,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:16:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:44,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 02:16:44,172 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-14 02:16:44,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:16:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:44,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 02:16:44,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-01-14 02:16:44,271 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:44,271 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:44,271 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:44,271 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:44,272 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-01-14 02:16:44,272 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:44,272 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:44,272 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:44,272 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2019-01-14 02:16:44,273 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:44,273 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:44,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,421 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:44,422 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:44,425 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-01-14 02:16:44,426 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:44,452 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-01-14 02:16:44,452 INFO L163 nArgumentSynthesizer]: Using integer mode. [2019-01-14 02:16:44,491 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-01-14 02:16:44,493 INFO L216 LassoAnalysis]: Preferences: [2019-01-14 02:16:44,493 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-14 02:16:44,493 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-14 02:16:44,493 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-14 02:16:44,494 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-14 02:16:44,494 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-14 02:16:44,494 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-14 02:16:44,494 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-14 02:16:44,494 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2019-01-14 02:16:44,494 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-14 02:16:44,494 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-14 02:16:44,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-14 02:16:44,659 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-14 02:16:44,659 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-14 02:16:44,660 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-01-14 02:16:44,661 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-14 02:16:44,662 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-14 02:16:44,662 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-14 02:16:44,662 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-14 02:16:44,662 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-14 02:16:44,663 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-14 02:16:44,663 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-14 02:16:44,667 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-14 02:16:44,669 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-01-14 02:16:44,669 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-01-14 02:16:44,670 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-14 02:16:44,670 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-01-14 02:16:44,670 INFO L518 LassoAnalysis]: Proved termination. [2019-01-14 02:16:44,670 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-01-14 02:16:44,671 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-01-14 02:16:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:44,746 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:16:44,747 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-01-14 02:16:44,756 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-01-14 02:16:44,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-14 02:16:44,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-14 02:16:44,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,759 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-14 02:16:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:44,814 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:16:44,814 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-01-14 02:16:44,820 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2019-01-14 02:16:44,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-01-14 02:16:44,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-14 02:16:44,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,822 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-01-14 02:16:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:16:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 02:16:44,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 02:16:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 02:16:44,931 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-01-14 02:16:44,931 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-01-14 02:16:44,964 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2019-01-14 02:16:44,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-01-14 02:16:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-14 02:16:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-01-14 02:16:44,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2019-01-14 02:16:44,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2019-01-14 02:16:44,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2019-01-14 02:16:44,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-14 02:16:44,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2019-01-14 02:16:44,968 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:16:44,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2019-01-14 02:16:44,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-14 02:16:44,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-14 02:16:44,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-14 02:16:44,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 02:16:44,969 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:44,969 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:44,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 02:16:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 02:16:44,972 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-01-14 02:16:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 02:16:44,972 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-01-14 02:16:44,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 02:16:44,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-01-14 02:16:44,972 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:16:44,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 02:16:44,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-14 02:16:44,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-14 02:16:44,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-14 02:16:44,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-14 02:16:44,973 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:44,973 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:44,973 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 02:16:44,973 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2019-01-14 02:16:44,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-14 02:16:44,974 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-14 02:16:44,974 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-14 02:16:44,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 02:16:44 BoogieIcfgContainer [2019-01-14 02:16:44,981 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 02:16:44,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 02:16:44,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 02:16:44,982 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 02:16:44,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:16:41" (3/4) ... [2019-01-14 02:16:44,986 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-14 02:16:44,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 02:16:44,987 INFO L168 Benchmark]: Toolchain (without parser) took 4484.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 952.7 MB in the beginning and 822.7 MB in the end (delta: 130.0 MB). Peak memory consumption was 209.1 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:44,989 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:16:44,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.27 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:44,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.55 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:16:44,991 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. [2019-01-14 02:16:44,991 INFO L168 Benchmark]: RCFGBuilder took 272.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -123.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:44,992 INFO L168 Benchmark]: BuchiAutomizer took 3886.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 822.7 MB in the end (delta: 242.3 MB). Peak memory consumption was 242.3 MB. Max. memory is 11.5 GB. [2019-01-14 02:16:44,993 INFO L168 Benchmark]: Witness Printer took 4.33 ms. Allocated memory is still 1.1 GB. Free memory is still 822.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:16:44,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.27 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 36.55 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 272.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -123.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3886.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 822.7 MB in the end (delta: 242.3 MB). Peak memory consumption was 242.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.33 ms. Allocated memory is still 1.1 GB. Free memory is still 822.7 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 101 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 13 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 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...