./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/a.10_true-termination.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-restricted-15/a.10_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8d0216d6bf8bf4f618f739d27f28d08a28da9c3b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:16:42,424 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:16:42,426 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:16:42,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:16:42,447 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:16:42,448 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:16:42,450 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:16:42,452 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:16:42,453 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:16:42,454 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:16:42,455 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:16:42,456 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:16:42,457 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:16:42,458 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:16:42,459 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:16:42,460 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:16:42,461 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:16:42,463 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:16:42,465 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:16:42,467 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:16:42,468 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:16:42,470 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:16:42,472 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:16:42,473 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:16:42,473 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:16:42,474 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:16:42,475 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:16:42,476 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:16:42,478 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:16:42,479 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:16:42,479 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:16:42,480 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:16:42,481 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:16:42,481 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:16:42,482 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:16:42,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:16:42,483 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:16:42,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:16:42,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:16:42,510 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:16:42,510 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:16:42,510 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:16:42,510 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:16:42,510 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:16:42,513 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:16:42,514 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:16:42,514 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:16:42,514 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:16:42,514 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:16:42,514 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:16:42,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:16:42,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:16:42,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:16:42,515 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:16:42,515 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:16:42,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:16:42,517 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:16:42,518 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:16:42,518 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:16:42,518 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:16:42,519 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:16:42,519 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:16:42,519 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:16:42,519 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:16:42,520 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:16:42,520 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:16:42,526 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d0216d6bf8bf4f618f739d27f28d08a28da9c3b [2018-11-28 23:16:42,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:16:42,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:16:42,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:16:42,616 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:16:42,618 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:16:42,618 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/a.10_true-termination.c [2018-11-28 23:16:42,673 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30053532/7959ce08d0d04fbc9b8fdfc6ec4d02cf/FLAGe5a3c7c70 [2018-11-28 23:16:43,099 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:16:43,100 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/a.10_true-termination.c [2018-11-28 23:16:43,106 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30053532/7959ce08d0d04fbc9b8fdfc6ec4d02cf/FLAGe5a3c7c70 [2018-11-28 23:16:43,479 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30053532/7959ce08d0d04fbc9b8fdfc6ec4d02cf [2018-11-28 23:16:43,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:16:43,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:16:43,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:43,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:16:43,492 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:16:43,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f345ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43, skipping insertion in model container [2018-11-28 23:16:43,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:16:43,523 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:16:43,711 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:43,717 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:16:43,736 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:43,752 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:16:43,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43 WrapperNode [2018-11-28 23:16:43,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:43,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:43,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:16:43,754 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:16:43,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:43,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:16:43,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:16:43,794 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:16:43,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (1/1) ... [2018-11-28 23:16:43,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:16:43,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:16:43,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:16:43,818 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:16:43,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (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 23:16:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:16:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:16:44,146 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:16:44,146 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:16:44,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:44 BoogieIcfgContainer [2018-11-28 23:16:44,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:16:44,148 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:16:44,148 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:16:44,153 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:16:44,154 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:44,154 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:16:43" (1/3) ... [2018-11-28 23:16:44,155 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72feb99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:44, skipping insertion in model container [2018-11-28 23:16:44,155 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:44,155 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:43" (2/3) ... [2018-11-28 23:16:44,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72feb99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:44, skipping insertion in model container [2018-11-28 23:16:44,156 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:44,156 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:44" (3/3) ... [2018-11-28 23:16:44,158 INFO L375 chiAutomizerObserver]: Analyzing ICFG a.10_true-termination.c [2018-11-28 23:16:44,215 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:16:44,216 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:16:44,216 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:16:44,217 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:16:44,217 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:16:44,217 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:16:44,217 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:16:44,217 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:16:44,217 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:16:44,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 23:16:44,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:44,257 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:44,257 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:44,265 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:44,265 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:44,265 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:16:44,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 23:16:44,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:44,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:44,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:44,267 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:44,267 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:44,276 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 3#L12-2true [2018-11-28 23:16:44,277 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!!(main_~x~0 == main_~y~0); 5#L12true assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 3#L12-2true [2018-11-28 23:16:44,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:44,284 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:16:44,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:44,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:44,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:44,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:44,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:44,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-28 23:16:44,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:44,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:44,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:44,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:44,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:44,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:44,414 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 23:16:44,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:44,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:44,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:44,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:44,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:44,616 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-11-28 23:16:44,648 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:44,649 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:44,650 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:44,650 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:44,650 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:44,650 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:44,651 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:44,651 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:44,651 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration1_Loop [2018-11-28 23:16:44,651 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:44,652 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:44,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:44,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:44,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:44,860 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:44,861 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:44,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:44,869 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:44,913 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:44,914 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:44,921 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:44,921 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:44,960 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:44,960 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:16:44,974 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:44,974 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:16:45,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:45,021 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:45,204 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:45,206 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:45,206 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:45,206 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:45,206 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:45,206 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:45,206 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:45,206 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:45,207 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:45,207 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration1_Loop [2018-11-28 23:16:45,207 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:45,207 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:45,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:45,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:45,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:45,569 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:45,576 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:45,577 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:45,579 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:45,579 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:45,580 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:45,580 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:45,587 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:45,588 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:45,604 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:45,607 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:45,608 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:45,608 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:45,609 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:45,609 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:45,611 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:45,611 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:45,622 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:45,623 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:45,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:45,624 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:45,624 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:45,625 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:45,625 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:45,626 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:45,626 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:45,632 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:45,641 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:16:45,641 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:45,644 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:45,644 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:45,644 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:45,645 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:16:45,646 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:45,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:45,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:45,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:45,815 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:16:45,817 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-11-28 23:16:45,876 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2018-11-28 23:16:45,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:16:45,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 23:16:45,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:45,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:16:45,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:45,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 23:16:45,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:45,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-28 23:16:45,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:45,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-28 23:16:45,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:16:45,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 23:16:45,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 23:16:45,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:45,895 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:16:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 23:16:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-28 23:16:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 23:16:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 23:16:45,921 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:16:45,921 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:16:45,921 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:16:45,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-28 23:16:45,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:45,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:45,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:45,922 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:16:45,922 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:45,923 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 69#L12-2 assume !!!(main_~x~0 == main_~y~0); 67#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 63#L12-2 [2018-11-28 23:16:45,923 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!!(main_~x~0 == main_~y~0); 64#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 63#L12-2 [2018-11-28 23:16:45,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:45,923 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-28 23:16:45,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:45,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:45,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:45,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:45,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:45,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-11-28 23:16:45,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:45,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:45,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:45,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:45,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:45,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:45,944 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-11-28 23:16:45,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:45,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:45,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:45,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:45,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:46,014 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 23:16:46,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:16:46,017 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:16:46,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:46,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:46,068 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 23:16:46,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:16:46,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 23:16:46,221 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:46,221 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:46,221 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:46,221 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:46,222 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:46,222 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:46,222 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:46,222 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:46,222 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration2_Loop [2018-11-28 23:16:46,222 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:46,222 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:46,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:46,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:46,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:46,307 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:46,307 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:46,312 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:46,312 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:46,334 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:46,334 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:16:46,340 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:46,340 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 23:16:46,366 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:46,367 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:46,489 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:46,491 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:46,491 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:46,491 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:46,491 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:46,492 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:46,492 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:46,492 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:46,492 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:46,492 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration2_Loop [2018-11-28 23:16:46,492 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:46,492 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:46,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:46,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:46,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:46,697 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:46,697 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:46,698 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:46,700 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:46,700 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:46,700 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:46,700 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:46,700 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:46,701 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:46,701 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:46,707 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:46,712 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:46,713 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:46,713 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:46,714 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:46,714 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:46,714 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:16:46,714 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:46,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:46,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:46,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:46,858 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:16:46,858 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:46,956 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2018-11-28 23:16:46,957 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 23:16:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 23:16:46,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:16:46,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:46,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 23:16:46,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:46,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-28 23:16:46,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:46,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-11-28 23:16:46,964 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:46,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-11-28 23:16:46,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 23:16:46,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:16:46,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-11-28 23:16:46,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:46,966 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 23:16:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-11-28 23:16:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-28 23:16:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-28 23:16:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-11-28 23:16:46,970 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 23:16:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:16:46,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:16:46,978 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2018-11-28 23:16:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:47,222 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2018-11-28 23:16:47,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:16:47,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-28 23:16:47,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:47,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2018-11-28 23:16:47,225 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 23:16:47,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:16:47,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2018-11-28 23:16:47,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:47,227 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-28 23:16:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2018-11-28 23:16:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-11-28 23:16:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:16:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-28 23:16:47,230 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:16:47,231 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:16:47,232 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:47,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-28 23:16:47,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:47,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:47,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:47,233 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:16:47,233 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:47,233 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 158#L12-2 assume !!!(main_~x~0 == main_~y~0); 154#L12 [2018-11-28 23:16:47,235 INFO L796 eck$LassoCheckResult]: Loop: 154#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 153#L12-2 assume !!!(main_~x~0 == main_~y~0); 154#L12 [2018-11-28 23:16:47,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:16:47,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:47,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:47,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:47,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:47,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:47,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:47,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-11-28 23:16:47,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:47,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:47,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:47,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:47,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:47,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2018-11-28 23:16:47,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:47,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:47,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:47,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:47,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:47,358 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:47,359 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:47,359 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:47,359 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:47,359 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:47,359 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:47,359 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:47,359 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:47,360 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration3_Loop [2018-11-28 23:16:47,360 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:47,360 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:47,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:47,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:47,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:47,648 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2018-11-28 23:16:47,665 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:47,666 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:47,673 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:47,673 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:47,704 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:47,704 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:50,280 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:50,282 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:50,283 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:50,283 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:50,283 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:50,283 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:50,283 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:50,283 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:50,284 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:50,284 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration3_Loop [2018-11-28 23:16:50,284 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:50,285 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:50,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:50,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:50,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:50,495 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:50,495 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:50,495 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:50,496 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:50,496 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:50,499 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:50,499 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:16:50,499 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:50,500 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:16:50,500 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:50,516 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:50,531 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:50,531 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:16:50,531 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:50,531 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:50,534 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:50,534 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 23:16:50,534 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:50,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:50,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:50,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:50,653 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 23:16:50,654 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 23:16:50,673 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2018-11-28 23:16:50,675 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 23:16:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:16:50,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:16:50,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:50,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:16:50,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:50,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:16:50,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:50,678 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-11-28 23:16:50,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:50,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-28 23:16:50,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:16:50,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:16:50,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-28 23:16:50,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:50,681 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-28 23:16:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-28 23:16:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-28 23:16:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:16:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-11-28 23:16:50,682 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-28 23:16:50,682 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-28 23:16:50,682 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:50,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-11-28 23:16:50,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:16:50,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:50,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:50,684 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-11-28 23:16:50,684 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:16:50,684 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 203#L12-2 assume !!!(main_~x~0 == main_~y~0); 204#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 205#L12-2 assume !!!(main_~x~0 == main_~y~0); 206#L12 [2018-11-28 23:16:50,684 INFO L796 eck$LassoCheckResult]: Loop: 206#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 208#L12-2 assume !!!(main_~x~0 == main_~y~0); 206#L12 [2018-11-28 23:16:50,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-11-28 23:16:50,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:50,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:50,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:50,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:50,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:50,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:50,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-11-28 23:16:50,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:50,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:50,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:50,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:50,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:50,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:50,700 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2018-11-28 23:16:50,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:50,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:50,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:50,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:50,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:50,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:50,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:16:50,800 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:50,800 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:50,800 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:50,800 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:50,801 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:50,801 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:50,801 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:50,801 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:50,801 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration4_Loop [2018-11-28 23:16:50,802 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:50,802 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:50,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:50,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:50,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:51,041 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:51,042 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:51,046 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:51,046 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:51,077 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:51,077 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:51,083 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:51,083 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:51,114 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:51,114 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:53,536 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:53,539 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:53,539 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:53,539 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:53,539 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:53,539 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:53,540 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:53,540 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:53,540 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:53,540 INFO L131 ssoRankerPreferences]: Filename of dumped script: a.10_true-termination.c_Iteration4_Loop [2018-11-28 23:16:53,540 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:53,540 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:53,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:53,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:53,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:53,660 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:53,661 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:53,661 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:53,662 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:53,662 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:53,662 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:53,662 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:53,665 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:53,665 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:53,673 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:53,674 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:53,674 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:53,674 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:53,675 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:53,675 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:16:53,675 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:53,678 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:16:53,679 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:53,684 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:53,688 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:53,688 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:16:53,688 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:53,689 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:53,689 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:53,689 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 23:16:53,689 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:53,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:53,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:53,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:53,754 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 23:16:53,754 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:16:53,761 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-11-28 23:16:53,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-11-28 23:16:53,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:16:53,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:53,762 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:53,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:53,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:53,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:53,850 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 23:16:53,850 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:16:53,859 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-11-28 23:16:53,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-11-28 23:16:53,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:16:53,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:53,861 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:53,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:53,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:53,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:53,926 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 23:16:53,927 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:16:53,943 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2018-11-28 23:16:53,945 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 23:16:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-28 23:16:53,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:16:53,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:53,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:16:53,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:53,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 23:16:53,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:53,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2018-11-28 23:16:53,950 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:53,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2018-11-28 23:16:53,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:53,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:53,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:53,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:53,951 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:53,951 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:16:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:16:53,952 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-11-28 23:16:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:53,952 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 23:16:53,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:16:53,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 23:16:53,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:53,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:16:53,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:53,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:53,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:53,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:53,953 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:53,953 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:53,953 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:53,954 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:16:53,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:53,954 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:53,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:53,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:53 BoogieIcfgContainer [2018-11-28 23:16:53,962 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:53,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:53,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:53,963 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:53,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:44" (3/4) ... [2018-11-28 23:16:53,968 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:53,968 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:53,969 INFO L168 Benchmark]: Toolchain (without parser) took 10485.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 951.3 MB in the beginning and 825.4 MB in the end (delta: 125.9 MB). Peak memory consumption was 258.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:53,970 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:53,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.41 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 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 23:16:53,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.20 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 23:16:53,972 INFO L168 Benchmark]: Boogie Preprocessor took 23.68 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 23:16:53,972 INFO L168 Benchmark]: RCFGBuilder took 329.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -167.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:53,973 INFO L168 Benchmark]: BuchiAutomizer took 9814.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 832.2 MB in the end (delta: 275.7 MB). Peak memory consumption was 275.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:53,974 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 1.2 GB. Free memory was 832.2 MB in the beginning and 825.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:53,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.41 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 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 39.20 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 23.68 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 329.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -167.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 9814.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 832.2 MB in the end (delta: 275.7 MB). Peak memory consumption was 275.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.46 ms. Allocated memory is still 1.2 GB. Free memory was 832.2 MB in the beginning and 825.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One deterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 8.5s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...