./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c0afa1d46bded0eb2bd485bf4790c0d11468ed7a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:15:17,288 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:17,290 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:17,303 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:17,304 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:17,305 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:17,307 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:17,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:17,311 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:17,312 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:17,313 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:17,314 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:17,315 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:17,316 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:17,318 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:17,318 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:17,319 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:17,322 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:17,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:17,326 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:17,327 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:17,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:17,332 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:17,332 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:17,332 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:17,333 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:17,335 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:17,336 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:17,337 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:17,339 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:17,339 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:17,340 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:17,340 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:17,341 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:17,342 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:17,343 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:17,344 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:17,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:17,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:17,363 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:17,363 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:17,363 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:17,364 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:17,364 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:17,364 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:17,364 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:17,365 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:17,365 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:17,365 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:17,365 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:17,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:17,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:17,367 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:17,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:17,367 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:17,367 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:17,368 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:17,368 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:17,368 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:17,368 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:17,368 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:17,369 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:17,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:17,370 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:17,370 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:17,372 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:17,372 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 -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2018-11-28 23:15:17,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:17,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:17,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:17,426 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:17,426 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:17,427 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:15:17,483 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973a1b091/29d36844d1be4c2bb8f29f5f48e6321c/FLAG7194d0496 [2018-11-28 23:15:17,946 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:17,946 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:15:17,952 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973a1b091/29d36844d1be4c2bb8f29f5f48e6321c/FLAG7194d0496 [2018-11-28 23:15:18,297 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973a1b091/29d36844d1be4c2bb8f29f5f48e6321c [2018-11-28 23:15:18,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:18,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:18,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:18,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:18,309 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:18,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d581d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18, skipping insertion in model container [2018-11-28 23:15:18,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:18,342 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:18,561 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:18,566 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:18,588 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:18,609 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:18,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18 WrapperNode [2018-11-28 23:15:18,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:18,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:18,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:18,611 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:18,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:18,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:18,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:18,655 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:18,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... [2018-11-28 23:15:18,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:18,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:18,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:18,680 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:18,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:19,102 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:19,102 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 23:15:19,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:19 BoogieIcfgContainer [2018-11-28 23:15:19,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:19,103 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:19,103 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:19,108 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:19,109 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:19,110 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:18" (1/3) ... [2018-11-28 23:15:19,111 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d2259aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:19, skipping insertion in model container [2018-11-28 23:15:19,111 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:19,111 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:18" (2/3) ... [2018-11-28 23:15:19,112 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d2259aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:19, skipping insertion in model container [2018-11-28 23:15:19,113 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:19,113 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:19" (3/3) ... [2018-11-28 23:15:19,115 INFO L375 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:15:19,199 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:19,202 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:19,203 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:19,203 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:19,203 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:19,203 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:19,203 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:19,203 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:19,203 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:19,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:15:19,278 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:19,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:19,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:19,298 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:19,298 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:19,298 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:19,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:15:19,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:19,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:19,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:19,304 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:19,304 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:19,313 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2018-11-28 23:15:19,314 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 7#L24-2true assume !(main_~y~0 < main_~z~0); 5#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 10#L22-2true [2018-11-28 23:15:19,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:19,321 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-28 23:15:19,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:19,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:19,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:19,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:19,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:19,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:19,444 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2018-11-28 23:15:19,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:19,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:19,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:19,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:19,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:19,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:19,459 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2018-11-28 23:15:19,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:19,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:19,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:19,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:19,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:19,604 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:19,606 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:19,606 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:19,606 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:19,606 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:19,606 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:19,607 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:19,607 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:19,607 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:19,608 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:19,608 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:19,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:19,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:19,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:19,925 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 23:15:19,933 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:19,934 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:19,946 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:19,946 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:19,971 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:19,971 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 23:15:19,978 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:19,978 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:19,998 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:19,998 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:20,005 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:20,005 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:20,036 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:20,036 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:22,303 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:22,306 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:22,306 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:22,306 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:22,306 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:22,306 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:22,306 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:22,306 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:22,307 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:22,307 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:22,307 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:22,307 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:22,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:22,539 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:22,544 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:22,545 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:22,547 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:22,547 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:22,547 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:22,548 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:22,552 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:22,552 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:22,561 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:22,562 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:22,562 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:22,563 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:22,563 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:22,563 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:22,566 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:22,566 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:22,574 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:22,575 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:22,575 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:22,576 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:22,576 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:22,576 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:22,577 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:22,578 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:22,578 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:22,597 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:22,598 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-28 23:15:22,598 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:22,599 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:22,600 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:22,600 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:22,600 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:22,606 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-28 23:15:22,606 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-28 23:15:22,622 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:22,623 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 23:15:22,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:22,624 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:22,624 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:22,624 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:22,629 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-28 23:15:22,629 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-28 23:15:22,650 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:22,651 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:22,652 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:22,652 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:22,652 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:22,652 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:22,652 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:22,658 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 23:15:22,658 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:22,678 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:22,714 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2018-11-28 23:15:22,716 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-28 23:15:22,718 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:22,719 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:22,719 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:22,721 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:15:22,723 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:22,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:22,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:22,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:23,016 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 23:15:23,018 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2018-11-28 23:15:23,132 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2018-11-28 23:15:23,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2018-11-28 23:15:23,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 23:15:23,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:23,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:15:23,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:23,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 23:15:23,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:23,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-11-28 23:15:23,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:23,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2018-11-28 23:15:23,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 23:15:23,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:15:23,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-11-28 23:15:23,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:23,152 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-28 23:15:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-11-28 23:15:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-28 23:15:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-28 23:15:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2018-11-28 23:15:23,183 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-28 23:15:23,183 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-28 23:15:23,183 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:23,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2018-11-28 23:15:23,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:23,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:23,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:23,185 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:23,185 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:23,186 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2018-11-28 23:15:23,186 INFO L796 eck$LassoCheckResult]: Loop: 97#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2018-11-28 23:15:23,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:23,186 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2018-11-28 23:15:23,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:23,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:23,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:23,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-11-28 23:15:23,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:23,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:23,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:23,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:23,218 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2018-11-28 23:15:23,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:23,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:23,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:23,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:23,301 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:23,301 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:23,301 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:23,301 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:23,301 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:23,302 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:23,302 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:23,302 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:23,302 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:23,302 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:23,302 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:23,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,504 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:23,505 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:23,509 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:23,510 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:23,528 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:23,529 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:23,536 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:23,536 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:23,556 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:23,556 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:23,562 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:23,562 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 23:15:23,584 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:23,584 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:23,860 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:23,863 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:23,863 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:23,863 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:23,863 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:23,864 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:23,864 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:23,864 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:23,864 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:23,864 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:23,864 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:23,864 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:23,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:23,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:24,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:24,115 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:24,115 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:24,116 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:24,117 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:24,117 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:24,117 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:24,117 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:24,121 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:24,121 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:24,124 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:24,125 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:24,125 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:24,126 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:24,127 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:24,127 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:24,129 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:24,129 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:24,134 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:24,134 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:24,136 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:24,136 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:24,136 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:24,137 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:24,137 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:24,137 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:24,137 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:24,141 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:24,145 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:24,145 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:24,146 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:24,146 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:24,146 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:24,146 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-11-28 23:15:24,148 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:24,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:24,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:24,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:24,245 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 23:15:24,246 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2018-11-28 23:15:24,263 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 17 states and 28 transitions. Complement of second has 6 states. [2018-11-28 23:15:24,266 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 23:15:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 23:15:24,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-28 23:15:24,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:24,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-28 23:15:24,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:24,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:24,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:24,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2018-11-28 23:15:24,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:24,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2018-11-28 23:15:24,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:15:24,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-28 23:15:24,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-28 23:15:24,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:24,273 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-28 23:15:24,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-28 23:15:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-28 23:15:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 23:15:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2018-11-28 23:15:24,276 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-28 23:15:24,276 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-28 23:15:24,276 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:15:24,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2018-11-28 23:15:24,277 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:24,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:24,277 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:24,279 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-28 23:15:24,279 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:24,279 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2018-11-28 23:15:24,280 INFO L796 eck$LassoCheckResult]: Loop: 152#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 153#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 159#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2018-11-28 23:15:24,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:24,280 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2018-11-28 23:15:24,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:24,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:24,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:24,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2018-11-28 23:15:24,292 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:24,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:24,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:24,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:24,298 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2018-11-28 23:15:24,298 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:24,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:24,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:24,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,360 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:24,360 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:24,360 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:24,360 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:24,361 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:24,361 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:24,361 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:24,361 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:24,361 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:24,361 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:24,362 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:24,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:24,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:24,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:24,520 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:24,520 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 23:15:24,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:24,523 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:24,544 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:24,544 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:24,549 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:24,549 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:24,602 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:24,602 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:26,789 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:26,792 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:26,792 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:26,792 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:26,792 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:26,792 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:26,792 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:26,793 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:26,793 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:26,793 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:26,793 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:26,793 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:26,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:26,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:26,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:26,899 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:26,899 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:26,900 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:26,900 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:26,902 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:26,902 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:26,902 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:26,902 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:26,903 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:26,903 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:26,915 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:26,916 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:26,920 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:26,920 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:26,920 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:26,920 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:26,921 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:26,922 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:26,929 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:26,930 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:26,930 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:26,930 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:26,931 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:26,932 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:26,933 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:26,934 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:26,937 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:26,937 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-28 23:15:26,937 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:26,939 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:26,939 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:26,940 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:26,940 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:26,940 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:26,941 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 23:15:26,941 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:26,947 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:26,953 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:26,954 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:15:26,954 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:26,954 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:26,954 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:26,954 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:26,955 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:27,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:27,313 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-11-28 23:15:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:27,314 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:15:27,314 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-28 23:15:27,411 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 30 states and 45 transitions. Complement of second has 8 states. [2018-11-28 23:15:27,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2018-11-28 23:15:27,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:15:27,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-28 23:15:27,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-28 23:15:27,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2018-11-28 23:15:27,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:27,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2018-11-28 23:15:27,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 23:15:27,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-28 23:15:27,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2018-11-28 23:15:27,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:27,418 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-11-28 23:15:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2018-11-28 23:15:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-28 23:15:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 23:15:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2018-11-28 23:15:27,422 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-28 23:15:27,422 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-28 23:15:27,422 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:15:27,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2018-11-28 23:15:27,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:27,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:27,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:27,424 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-28 23:15:27,424 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:27,424 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2018-11-28 23:15:27,424 INFO L796 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2018-11-28 23:15:27,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2018-11-28 23:15:27,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:27,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,442 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2018-11-28 23:15:27,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:27,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,450 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2018-11-28 23:15:27,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:27,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,520 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:27,520 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:27,520 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:27,520 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:27,521 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:27,521 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,521 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:27,521 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:27,521 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:15:27,521 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:27,521 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:27,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,598 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:27,599 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,602 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:27,602 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:27,623 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:27,623 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,628 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:27,628 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,671 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:27,671 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:27,850 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:27,852 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:27,852 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:27,852 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:27,853 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:27,853 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:27,853 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,853 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:27,853 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:27,853 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:15:27,853 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:27,854 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:27,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,925 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:27,926 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:27,926 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:27,927 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:27,927 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:27,928 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:27,928 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:27,928 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:27,928 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:27,928 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:27,931 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:27,932 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:27,933 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:27,933 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:27,933 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:27,933 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:27,933 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:15:27,934 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:28,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:28,107 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 23:15:28,107 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2018-11-28 23:15:28,124 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2018-11-28 23:15:28,128 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 23:15:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-28 23:15:28,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-28 23:15:28,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,129 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:28,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:28,166 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:28,167 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2018-11-28 23:15:28,183 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2018-11-28 23:15:28,184 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 23:15:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-28 23:15:28,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-28 23:15:28,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,185 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:28,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:28,212 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 1 loop predicates [2018-11-28 23:15:28,212 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2018-11-28 23:15:28,234 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 29 states and 45 transitions. Complement of second has 5 states. [2018-11-28 23:15:28,235 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 23:15:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-28 23:15:28,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-28 23:15:28,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-28 23:15:28,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-28 23:15:28,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2018-11-28 23:15:28,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:15:28,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2018-11-28 23:15:28,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 23:15:28,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 23:15:28,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2018-11-28 23:15:28,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:28,243 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2018-11-28 23:15:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2018-11-28 23:15:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-28 23:15:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 23:15:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2018-11-28 23:15:28,246 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-28 23:15:28,246 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-28 23:15:28,247 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:15:28,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2018-11-28 23:15:28,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:15:28,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:28,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:28,248 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-28 23:15:28,248 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:28,248 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2018-11-28 23:15:28,249 INFO L796 eck$LassoCheckResult]: Loop: 447#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 448#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2018-11-28 23:15:28,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:28,249 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2018-11-28 23:15:28,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:28,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:28,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:28,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:28,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:28,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:28,273 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2018-11-28 23:15:28,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:28,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:28,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:28,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:28,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:28,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2018-11-28 23:15:28,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:28,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:28,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:28,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:28,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:28,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:15:28,394 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:15:28,413 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:15:28,422 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2018-11-28 23:15:28,423 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:15:28,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:28,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:15:28,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 23:15:28,546 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:28,547 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:28,547 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:28,547 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:28,547 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:28,547 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,547 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:28,547 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:28,547 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:15:28,548 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:28,548 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:28,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:28,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:28,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:28,676 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:28,677 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,706 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,706 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:28,729 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:28,729 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,734 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,734 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:28,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:28,754 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,760 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,760 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,787 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:28,787 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:31,009 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:31,012 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:31,012 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:31,012 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:31,012 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:31,012 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:31,012 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:31,012 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:31,013 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:31,013 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:15:31,013 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:31,013 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:31,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:31,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:31,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:31,139 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:31,139 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:31,140 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:31,141 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,141 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,144 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:31,145 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:31,145 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:31,149 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,150 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:31,150 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,151 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,151 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,151 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:31,152 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:31,152 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:31,156 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,156 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:31,157 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,157 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:31,157 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,157 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,157 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:31,158 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:31,158 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:31,165 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,166 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-28 23:15:31,166 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:31,167 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,167 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,167 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,167 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:31,169 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-28 23:15:31,169 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-28 23:15:31,171 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,172 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:31,172 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,179 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,179 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,179 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:31,180 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-11-28 23:15:31,180 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-11-28 23:15:31,187 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,188 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:31,188 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,188 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:31,189 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,189 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,189 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 23:15:31,189 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 23:15:31,190 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:31,205 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:31,220 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:15:31,221 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-28 23:15:31,221 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:31,222 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:31,222 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:31,222 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:15:31,222 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:31,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:31,508 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:15:31,509 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-28 23:15:31,542 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 26 states and 37 transitions. Complement of second has 7 states. [2018-11-28 23:15:31,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-28 23:15:31,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-28 23:15:31,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,546 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:31,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:31,695 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:15:31,695 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-28 23:15:31,733 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 7 states. [2018-11-28 23:15:31,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-28 23:15:31,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-28 23:15:31,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,736 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:31,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:31,912 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 3 loop predicates [2018-11-28 23:15:31,913 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-28 23:15:31,942 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 31 states and 43 transitions. Complement of second has 6 states. [2018-11-28 23:15:31,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:15:31,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-28 23:15:31,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-28 23:15:31,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-28 23:15:31,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2018-11-28 23:15:31,950 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:15:31,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2018-11-28 23:15:31,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:15:31,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-28 23:15:31,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2018-11-28 23:15:31,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:31,951 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-11-28 23:15:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2018-11-28 23:15:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-11-28 23:15:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:15:31,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-11-28 23:15:31,956 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-28 23:15:31,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:15:31,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:15:31,962 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2018-11-28 23:15:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:32,237 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2018-11-28 23:15:32,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 23:15:32,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2018-11-28 23:15:32,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:32,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2018-11-28 23:15:32,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:15:32,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-28 23:15:32,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2018-11-28 23:15:32,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:32,241 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-11-28 23:15:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2018-11-28 23:15:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-11-28 23:15:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 23:15:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2018-11-28 23:15:32,245 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-11-28 23:15:32,245 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-11-28 23:15:32,245 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:15:32,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2018-11-28 23:15:32,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:32,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:32,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:32,246 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-28 23:15:32,247 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:15:32,247 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2018-11-28 23:15:32,247 INFO L796 eck$LassoCheckResult]: Loop: 778#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 779#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 789#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2018-11-28 23:15:32,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,247 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2018-11-28 23:15:32,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:32,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:32,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:32,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2018-11-28 23:15:32,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:32,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:32,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:32,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2018-11-28 23:15:32,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:32,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:32,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:32,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,463 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-28 23:15:32,478 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:32,478 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:32,478 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:32,478 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:32,479 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:32,479 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,479 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:32,479 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:32,479 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:15:32,480 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:32,480 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:32,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:32,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:32,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:32,597 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:32,597 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,605 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:32,605 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:32,626 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:32,626 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,631 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:32,632 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:32,653 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:32,653 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,659 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:32,659 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,686 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:32,687 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:33,190 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:33,192 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:33,193 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:33,193 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:33,193 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:33,193 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:33,193 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:33,193 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:33,193 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:33,193 INFO L131 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:15:33,193 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:33,193 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:33,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:33,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:33,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:33,377 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:33,377 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:33,378 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:33,378 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:33,378 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:33,378 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:33,381 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:33,383 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:33,383 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:33,386 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:33,387 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:33,387 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:33,387 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:33,387 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:33,387 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:33,393 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:33,393 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:33,395 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:33,396 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:33,397 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:33,397 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:33,397 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:33,397 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:33,397 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:33,402 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:33,402 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:33,407 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:33,414 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:33,420 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:33,420 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:33,420 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:33,421 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:33,421 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-11-28 23:15:33,421 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:33,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:33,672 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:15:33,672 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2018-11-28 23:15:33,698 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 35 states and 50 transitions. Complement of second has 6 states. [2018-11-28 23:15:33,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:15:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 23:15:33,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 23:15:33,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-28 23:15:33,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-28 23:15:33,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2018-11-28 23:15:33,703 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:33,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2018-11-28 23:15:33,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:33,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:33,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:33,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:33,704 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:33,704 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:33,704 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:33,704 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 23:15:33,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:33,705 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:33,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:33,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:33 BoogieIcfgContainer [2018-11-28 23:15:33,716 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:33,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:33,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:33,716 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:33,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:19" (3/4) ... [2018-11-28 23:15:33,721 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:33,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:33,722 INFO L168 Benchmark]: Toolchain (without parser) took 15420.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 952.7 MB in the beginning and 988.8 MB in the end (delta: -36.1 MB). Peak memory consumption was 165.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,725 INFO L168 Benchmark]: CDTParser took 0.21 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 23:15:33,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.94 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.62 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:33,728 INFO L168 Benchmark]: Boogie Preprocessor took 24.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:33,729 INFO L168 Benchmark]: RCFGBuilder took 423.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,730 INFO L168 Benchmark]: BuchiAutomizer took 14612.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 988.8 MB in the end (delta: 117.8 MB). Peak memory consumption was 190.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,733 INFO L168 Benchmark]: Witness Printer took 5.49 ms. Allocated memory is still 1.2 GB. Free memory is still 988.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:33,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 304.94 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.62 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 423.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 14612.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 988.8 MB in the end (delta: 117.8 MB). Peak memory consumption was 190.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.49 ms. Allocated memory is still 1.2 GB. Free memory is still 988.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 11.8s. Construction of modules took 0.3s. Büchi inclusion checks took 2.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 68 SDslu, 8 SDs, 0 SdLazy, 143 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf97 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...