./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67bb0790f696b3c18eb630bed2fc34fee971c82b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:44:02,342 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:44:02,344 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:44:02,357 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:44:02,358 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:44:02,359 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:44:02,360 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:44:02,364 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:44:02,370 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:44:02,371 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:44:02,374 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:44:02,375 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:44:02,378 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:44:02,379 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:44:02,385 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:44:02,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:44:02,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:44:02,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:44:02,391 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:44:02,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:44:02,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:44:02,395 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:44:02,398 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:44:02,398 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:44:02,398 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:44:02,399 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:44:02,400 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:44:02,401 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:44:02,402 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:44:02,403 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:44:02,403 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:44:02,404 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:44:02,404 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:44:02,405 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:44:02,405 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:44:02,406 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:44:02,407 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 23:44:02,430 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:44:02,430 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:44:02,432 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:44:02,434 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:44:02,435 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:44:02,435 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:44:02,435 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:44:02,435 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:44:02,435 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:44:02,436 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:44:02,436 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:44:02,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:44:02,436 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:44:02,436 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:44:02,436 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:44:02,437 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:44:02,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:44:02,438 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:44:02,438 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:44:02,438 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:44:02,438 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:44:02,438 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:44:02,439 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:44:02,439 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:44:02,439 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:44:02,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:44:02,439 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:44:02,440 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:44:02,443 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:44:02,444 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:44:02,444 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:44:02,446 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:44:02,447 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2018-11-28 23:44:02,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:44:02,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:44:02,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:44:02,536 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:44:02,537 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:44:02,538 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i [2018-11-28 23:44:02,611 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacf6fc46/d1d47621db494337a8694e6d06515106/FLAG0628ec50b [2018-11-28 23:44:03,132 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:44:03,133 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-invgen/nest-if3_true-unreach-call_true-termination.i [2018-11-28 23:44:03,140 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacf6fc46/d1d47621db494337a8694e6d06515106/FLAG0628ec50b [2018-11-28 23:44:03,489 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacf6fc46/d1d47621db494337a8694e6d06515106 [2018-11-28 23:44:03,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:44:03,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:44:03,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:44:03,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:44:03,500 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:44:03,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a52505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03, skipping insertion in model container [2018-11-28 23:44:03,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:44:03,540 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:44:03,783 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:44:03,791 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:44:03,812 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:44:03,831 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:44:03,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03 WrapperNode [2018-11-28 23:44:03,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:44:03,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:44:03,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:44:03,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:44:03,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:44:03,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:44:03,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:44:03,877 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:44:03,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... [2018-11-28 23:44:03,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:44:03,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:44:03,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:44:03,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:44:03,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:44:04,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:44:04,465 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:44:04,465 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-28 23:44:04,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:44:04 BoogieIcfgContainer [2018-11-28 23:44:04,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:44:04,472 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:44:04,472 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:44:04,484 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:44:04,486 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:44:04,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:44:03" (1/3) ... [2018-11-28 23:44:04,490 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@530c0761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:44:04, skipping insertion in model container [2018-11-28 23:44:04,491 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:44:04,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:03" (2/3) ... [2018-11-28 23:44:04,491 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@530c0761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:44:04, skipping insertion in model container [2018-11-28 23:44:04,492 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:44:04,492 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:44:04" (3/3) ... [2018-11-28 23:44:04,497 INFO L375 chiAutomizerObserver]: Analyzing ICFG nest-if3_true-unreach-call_true-termination.i [2018-11-28 23:44:04,571 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:44:04,572 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:44:04,572 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:44:04,572 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:44:04,572 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:44:04,573 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:44:04,573 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:44:04,573 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:44:04,573 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:44:04,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-28 23:44:04,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:44:04,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:44:04,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:44:04,623 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:44:04,624 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:44:04,624 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:44:04,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-28 23:44:04,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:44:04,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:44:04,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:44:04,626 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:44:04,627 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:44:04,637 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 14#L14true assume !!(main_~l~0 > 0); 3#L15true assume !!(main_~l~0 < 1000000); 7#L16true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 15#L17-3true [2018-11-28 23:44:04,637 INFO L796 eck$LassoCheckResult]: Loop: 15#L17-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 8#L18-2true assume !true; 4#L18-3true assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 5#L17-2true main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 15#L17-3true [2018-11-28 23:44:04,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:04,650 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2018-11-28 23:44:04,652 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:04,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:04,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:04,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:04,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:04,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1683322, now seen corresponding path program 1 times [2018-11-28 23:44:04,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:04,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:04,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:04,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:04,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:44:04,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:44:04,831 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:44:04,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 23:44:04,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 23:44:04,854 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-11-28 23:44:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:44:04,862 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2018-11-28 23:44:04,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:44:04,865 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2018-11-28 23:44:04,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:44:04,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2018-11-28 23:44:04,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 23:44:04,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 23:44:04,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2018-11-28 23:44:04,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:44:04,875 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-11-28 23:44:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2018-11-28 23:44:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-28 23:44:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-28 23:44:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-11-28 23:44:04,909 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-11-28 23:44:04,909 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-11-28 23:44:04,910 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:44:04,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2018-11-28 23:44:04,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:44:04,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:44:04,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:44:04,912 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:44:04,912 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:44:04,913 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 42#L14 assume !!(main_~l~0 > 0); 39#L15 assume !!(main_~l~0 < 1000000); 40#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 38#L17-3 [2018-11-28 23:44:04,913 INFO L796 eck$LassoCheckResult]: Loop: 38#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 43#L18-2 assume !(main_~i~0 < main_~n~0); 36#L18-3 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 37#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 38#L17-3 [2018-11-28 23:44:04,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:04,913 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 2 times [2018-11-28 23:44:04,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:04,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:04,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:04,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:04,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1668907, now seen corresponding path program 1 times [2018-11-28 23:44:04,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:04,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:04,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:44:04,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:04,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1295853045, now seen corresponding path program 1 times [2018-11-28 23:44:04,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:04,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:04,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:04,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:05,091 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-28 23:44:05,153 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:44:05,154 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:44:05,155 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:44:05,155 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:44:05,155 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:44:05,155 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:05,155 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:44:05,155 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:44:05,156 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration2_Loop [2018-11-28 23:44:05,156 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:44:05,156 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:44:05,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:05,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:05,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:05,540 WARN L180 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:44:05,578 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:44:05,579 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:44:05,595 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:44:05,595 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:05,614 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:44:05,615 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=7} Honda state: {ULTIMATE.start_main_#t~nondet5=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:05,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:44:05,649 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:05,688 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:44:05,688 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:44:06,048 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:44:06,051 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:44:06,051 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:44:06,051 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:44:06,052 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:44:06,052 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:44:06,052 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:06,052 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:44:06,052 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:44:06,052 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration2_Loop [2018-11-28 23:44:06,052 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:44:06,053 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:44:06,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:06,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:06,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:06,244 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:44:06,250 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:44:06,252 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:44:06,253 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:44:06,254 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:44:06,254 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:44:06,255 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:44:06,255 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:44:06,257 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:44:06,258 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:44:06,268 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:44:06,268 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:44:06,269 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:44:06,270 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:44:06,270 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:44:06,270 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:44:06,270 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:44:06,272 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:44:06,272 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:44:06,284 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:44:06,303 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:44:06,304 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:44:06,307 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:44:06,307 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:44:06,307 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:44:06,308 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2018-11-28 23:44:06,310 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:44:06,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:06,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:06,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:06,604 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 [2018-11-28 23:44:06,606 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:44:06,791 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 17 states and 23 transitions. Complement of second has 4 states. [2018-11-28 23:44:06,792 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 [2018-11-28 23:44:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:44:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-28 23:44:06,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 23:44:06,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:06,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 23:44:06,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:06,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-28 23:44:06,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:06,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2018-11-28 23:44:06,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:44:06,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 19 transitions. [2018-11-28 23:44:06,813 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:44:06,813 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-28 23:44:06,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2018-11-28 23:44:06,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:44:06,814 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-11-28 23:44:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2018-11-28 23:44:06,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-11-28 23:44:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 23:44:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-11-28 23:44:06,820 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-11-28 23:44:06,820 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-11-28 23:44:06,820 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:44:06,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2018-11-28 23:44:06,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:44:06,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:44:06,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:44:06,825 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-28 23:44:06,826 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:44:06,826 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 117#L14 assume !!(main_~l~0 > 0); 110#L15 assume !!(main_~l~0 < 1000000); 111#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 118#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 112#L18-2 [2018-11-28 23:44:06,827 INFO L796 eck$LassoCheckResult]: Loop: 112#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 113#L4 assume !(0 == __VERIFIER_assert_~cond); 119#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 112#L18-2 [2018-11-28 23:44:06,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash 29742509, now seen corresponding path program 1 times [2018-11-28 23:44:06,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:06,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:06,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:06,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:06,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:06,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 1 times [2018-11-28 23:44:06,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:06,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:06,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:06,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:06,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:06,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1295854647, now seen corresponding path program 1 times [2018-11-28 23:44:06,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:06,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:06,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:06,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:06,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:07,117 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:44:07,117 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:44:07,117 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:44:07,118 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:44:07,118 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:44:07,118 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:07,118 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:44:07,118 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:44:07,118 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration3_Loop [2018-11-28 23:44:07,119 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:44:07,119 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:44:07,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:07,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:07,409 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-28 23:44:07,438 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:44:07,438 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:07,449 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:44:07,450 INFO L163 nArgumentSynthesizer]: Using integer mode. 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) [2018-11-28 23:44:07,512 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:44:07,512 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 [2018-11-28 23:44:07,719 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:44:07,722 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:44:07,722 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:44:07,722 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:44:07,722 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:44:07,722 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:44:07,723 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:07,723 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:44:07,723 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:44:07,723 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration3_Loop [2018-11-28 23:44:07,723 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:44:07,723 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:44:07,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:07,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:07,886 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2018-11-28 23:44:07,913 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:44:07,913 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:44:07,914 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:44:07,917 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:44:07,917 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:44:07,917 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:44:07,917 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:44:07,917 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:44:07,919 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:44:07,919 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:44:07,927 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:44:07,936 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:44:07,937 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:44:07,937 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:44:07,937 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:44:07,938 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:44:07,938 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:44:07,938 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:44:07,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:08,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:08,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:08,095 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 [2018-11-28 23:44:08,095 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-28 23:44:08,139 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 31 states and 40 transitions. Complement of second has 7 states. [2018-11-28 23:44:08,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:44:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:44:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-28 23:44:08,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:44:08,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:08,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-28 23:44:08,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:08,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-28 23:44:08,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:08,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2018-11-28 23:44:08,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:44:08,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 20 states and 26 transitions. [2018-11-28 23:44:08,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:44:08,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-28 23:44:08,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2018-11-28 23:44:08,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:44:08,147 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-11-28 23:44:08,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2018-11-28 23:44:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2018-11-28 23:44:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 23:44:08,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-11-28 23:44:08,150 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-11-28 23:44:08,150 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-11-28 23:44:08,150 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:44:08,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2018-11-28 23:44:08,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:44:08,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:44:08,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:44:08,151 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:44:08,152 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:44:08,152 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 211#L14 assume !!(main_~l~0 > 0); 200#L15 assume !!(main_~l~0 < 1000000); 201#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 209#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 207#L18-2 assume !(main_~i~0 < main_~n~0); 202#L18-3 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5; 203#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 204#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 205#L18-2 [2018-11-28 23:44:08,152 INFO L796 eck$LassoCheckResult]: Loop: 205#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 206#L4 assume !(0 == __VERIFIER_assert_~cond); 212#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 205#L18-2 [2018-11-28 23:44:08,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1516740677, now seen corresponding path program 1 times [2018-11-28 23:44:08,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:08,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:08,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:08,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:08,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:08,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 2 times [2018-11-28 23:44:08,175 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:08,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:08,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:08,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:08,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:44:08,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash -2129380705, now seen corresponding path program 1 times [2018-11-28 23:44:08,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:44:08,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:44:08,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:08,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:44:08,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:44:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:08,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:44:08,258 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:44:08,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:44:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:08,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:08,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:44:08,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 23:44:08,363 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:44:08,363 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:44:08,363 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:44:08,363 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:44:08,364 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:44:08,364 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:08,364 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:44:08,364 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:44:08,364 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration4_Loop [2018-11-28 23:44:08,364 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:44:08,364 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:44:08,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:08,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:08,522 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2018-11-28 23:44:08,547 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:44:08,548 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:08,552 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:44:08,553 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:08,578 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:44:08,579 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:44:08,684 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:44:08,686 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:44:08,686 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:44:08,686 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:44:08,686 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:44:08,686 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:44:08,686 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:44:08,686 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:44:08,687 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:44:08,687 INFO L131 ssoRankerPreferences]: Filename of dumped script: nest-if3_true-unreach-call_true-termination.i_Iteration4_Loop [2018-11-28 23:44:08,687 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:44:08,687 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:44:08,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:08,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:44:08,823 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:44:08,824 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:44:08,824 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:44:08,825 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:44:08,825 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:44:08,826 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:44:08,826 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:44:08,826 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:44:08,826 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:44:08,827 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:44:08,828 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:44:08,828 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:44:08,829 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:44:08,829 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:44:08,829 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:44:08,830 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:44:08,830 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:44:08,831 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:44:08,831 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:44:08,837 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:44:08,844 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:44:08,844 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:44:08,845 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:44:08,845 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:44:08,845 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:44:08,845 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-28 23:44:08,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:44:08,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:08,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:08,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:08,943 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 [2018-11-28 23:44:08,943 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:44:08,988 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2018-11-28 23:44:08,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:44:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:44:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-28 23:44:08,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:44:08,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:08,991 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:44:09,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:09,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:09,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:09,105 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 [2018-11-28 23:44:09,105 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:44:09,130 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2018-11-28 23:44:09,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:44:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:44:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-28 23:44:09,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:44:09,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:09,133 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:44:09,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:44:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:09,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:44:09,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:44:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:44:09,230 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 [2018-11-28 23:44:09,230 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:44:09,267 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 22 states and 27 transitions. Complement of second has 6 states. [2018-11-28 23:44:09,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:44:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:44:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-11-28 23:44:09,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:44:09,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:09,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 23:44:09,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:09,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 23:44:09,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:44:09,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2018-11-28 23:44:09,275 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:44:09,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-11-28 23:44:09,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:44:09,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:44:09,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:44:09,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:44:09,278 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:44:09,278 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:44:09,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:44:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:44:09,278 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-11-28 23:44:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:44:09,279 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 23:44:09,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:44:09,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 23:44:09,279 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:44:09,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:44:09,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:44:09,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:44:09,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:44:09,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:44:09,280 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:44:09,280 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:44:09,280 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:44:09,281 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:44:09,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:44:09,281 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:44:09,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:44:09,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:44:09 BoogieIcfgContainer [2018-11-28 23:44:09,289 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:44:09,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:44:09,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:44:09,289 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:44:09,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:44:04" (3/4) ... [2018-11-28 23:44:09,294 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:44:09,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:44:09,295 INFO L168 Benchmark]: Toolchain (without parser) took 5801.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 951.4 MB in the beginning and 872.7 MB in the end (delta: 78.7 MB). Peak memory consumption was 202.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:44:09,296 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. [2018-11-28 23:44:09,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.45 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:44:09,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:44:09,298 INFO L168 Benchmark]: Boogie Preprocessor took 39.07 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:44:09,299 INFO L168 Benchmark]: RCFGBuilder took 555.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:44:09,300 INFO L168 Benchmark]: BuchiAutomizer took 4816.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.7 MB in the end (delta: 220.3 MB). Peak memory consumption was 220.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:44:09,301 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 1.2 GB. Free memory is still 872.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:44:09,306 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 336.45 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.07 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 555.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4816.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.7 MB in the end (delta: 220.3 MB). Peak memory consumption was 220.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.12 ms. Allocated memory is still 1.2 GB. Free memory is still 872.7 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 n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 70 SDtfs, 66 SDslu, 28 SDs, 0 SdLazy, 41 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf98 lsp94 ukn100 mio100 lsp100 div100 bol100 ite121 ukn100 eq169 hnf91 smp71 dnf97 smp100 tf106 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...