./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.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 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 13:56:48,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 13:56:48,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 13:56:48,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 13:56:48,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 13:56:48,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 13:56:48,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 13:56:48,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 13:56:48,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 13:56:48,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 13:56:48,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 13:56:48,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 13:56:48,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 13:56:48,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 13:56:48,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 13:56:48,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 13:56:48,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 13:56:48,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 13:56:48,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 13:56:48,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 13:56:48,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 13:56:48,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 13:56:48,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 13:56:48,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 13:56:48,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 13:56:48,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 13:56:48,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 13:56:48,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 13:56:48,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 13:56:48,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 13:56:48,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 13:56:48,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 13:56:48,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 13:56:48,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 13:56:48,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 13:56:48,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 13:56:48,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 13:56:48,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 13:56:48,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 13:56:48,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 13:56:48,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 13:56:48,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 13:56:48,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 13:56:48,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 13:56:48,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 13:56:48,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 13:56:48,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 13:56:48,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 13:56:48,465 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 13:56:48,465 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 13:56:48,465 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 13:56:48,465 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 13:56:48,466 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 13:56:48,466 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 13:56:48,466 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 13:56:48,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 13:56:48,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 13:56:48,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 13:56:48,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 13:56:48,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 13:56:48,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 13:56:48,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 13:56:48,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 13:56:48,475 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 13:56:48,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 13:56:48,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 13:56:48,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 13:56:48,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 13:56:48,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 13:56:48,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 13:56:48,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 13:56:48,477 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 13:56:48,478 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 [2021-08-27 13:56:48,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 13:56:48,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 13:56:48,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 13:56:48,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 13:56:48,745 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 13:56:48,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2021-08-27 13:56:48,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f71aa0b/ec108b6c849b40faa373956818d61d64/FLAGe89d64b37 [2021-08-27 13:56:49,253 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 13:56:49,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2021-08-27 13:56:49,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f71aa0b/ec108b6c849b40faa373956818d61d64/FLAGe89d64b37 [2021-08-27 13:56:49,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f71aa0b/ec108b6c849b40faa373956818d61d64 [2021-08-27 13:56:49,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 13:56:49,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 13:56:49,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 13:56:49,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 13:56:49,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 13:56:49,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199f64df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49, skipping insertion in model container [2021-08-27 13:56:49,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 13:56:49,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 13:56:49,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:56:49,419 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 13:56:49,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:56:49,440 INFO L208 MainTranslator]: Completed translation [2021-08-27 13:56:49,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49 WrapperNode [2021-08-27 13:56:49,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 13:56:49,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 13:56:49,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 13:56:49,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 13:56:49,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 13:56:49,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 13:56:49,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 13:56:49,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 13:56:49,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 13:56:49,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 13:56:49,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 13:56:49,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 13:56:49,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (1/1) ... [2021-08-27 13:56:49,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:49,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:49,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 13:56:49,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 13:56:49,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 13:56:49,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 13:56:49,778 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 13:56:49,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:49 BoogieIcfgContainer [2021-08-27 13:56:49,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 13:56:49,781 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 13:56:49,781 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 13:56:49,784 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 13:56:49,785 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:49,785 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 01:56:49" (1/3) ... [2021-08-27 13:56:49,786 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4346ff45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:56:49, skipping insertion in model container [2021-08-27 13:56:49,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:49,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:49" (2/3) ... [2021-08-27 13:56:49,786 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4346ff45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:56:49, skipping insertion in model container [2021-08-27 13:56:49,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:49,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:49" (3/3) ... [2021-08-27 13:56:49,788 INFO L389 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7b.c [2021-08-27 13:56:49,854 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 13:56:49,854 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 13:56:49,854 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 13:56:49,854 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 13:56:49,854 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 13:56:49,854 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 13:56:49,855 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 13:56:49,855 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 13:56:49,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:49,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:56:49,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:49,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:49,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:56:49,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:49,885 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 13:56:49,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:49,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:56:49,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:49,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:49,887 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:56:49,887 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:49,900 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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; 5#L23-2true [2021-08-27 13:56:49,900 INFO L793 eck$LassoCheckResult]: Loop: 5#L23-2true assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 7#L21true assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 5#L23-2true [2021-08-27 13:56:49,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:49,907 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 13:56:49,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:49,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000715277] [2021-08-27 13:56:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:49,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:49,986 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:50,010 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:50,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-08-27 13:56:50,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:50,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074161711] [2021-08-27 13:56:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:50,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:50,028 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:50,037 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:50,040 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-08-27 13:56:50,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:50,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925779869] [2021-08-27 13:56:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:50,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:50,052 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:50,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:50,171 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:50,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:50,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:50,172 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:50,172 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:50,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:50,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:50,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2021-08-27 13:56:50,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:50,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:50,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,326 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:50,327 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:50,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:50,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:50,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 13:56:50,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:50,384 INFO L440 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: [] [2021-08-27 13:56:50,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:50,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:50,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 13:56:50,440 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:50,440 INFO L440 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: [] [2021-08-27 13:56:50,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 13:56:50,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:50,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:50,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:50,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:50,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 13:56:50,568 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:50,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,575 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:50,576 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:50,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:50,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:50,576 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:50,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,577 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:50,577 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:50,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2021-08-27 13:56:50,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:50,577 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:50,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:50,668 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:50,671 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:50,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,679 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:50,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:50,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:50,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:50,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:50,691 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:50,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:50,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 13:56:50,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:50,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,744 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 13:56:50,747 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:50,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:50,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:50,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:50,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:50,757 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:50,757 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:50,784 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:50,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 13:56:50,811 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:50,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:50,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:50,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:50,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:50,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:50,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:50,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:50,826 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:50,830 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:56:50,830 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:56:50,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:50,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:50,841 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:50,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 13:56:50,847 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:50,847 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:50,847 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:50,848 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 13:56:50,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,867 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:50,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:50,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:50,905 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:50,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:50,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:50,956 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 [2021-08-27 13:56:50,957 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:50,994 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 37 states and 48 transitions. Complement of second has 8 states. [2021-08-27 13:56:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-08-27 13:56:50,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2021-08-27 13:56:50,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:50,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-27 13:56:50,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:50,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-27 13:56:50,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:50,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2021-08-27 13:56:51,001 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-08-27 13:56:51,004 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 19 transitions. [2021-08-27 13:56:51,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-08-27 13:56:51,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-08-27 13:56:51,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2021-08-27 13:56:51,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:51,006 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-08-27 13:56:51,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2021-08-27 13:56:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-08-27 13:56:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2021-08-27 13:56:51,023 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-08-27 13:56:51,023 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-08-27 13:56:51,023 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 13:56:51,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2021-08-27 13:56:51,024 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-08-27 13:56:51,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:51,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:51,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 13:56:51,024 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:56:51,025 INFO L791 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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; 83#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 85#L21 [2021-08-27 13:56:51,025 INFO L793 eck$LassoCheckResult]: Loop: 85#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 88#L23 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 84#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 85#L21 [2021-08-27 13:56:51,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:51,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 13:56:51,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:51,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235054492] [2021-08-27 13:56:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:51,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,030 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,033 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2021-08-27 13:56:51,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:51,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140956296] [2021-08-27 13:56:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:51,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,040 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,044 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2021-08-27 13:56:51,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:51,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264254116] [2021-08-27 13:56:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:51,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,050 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:51,101 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:51,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:51,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:51,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:51,102 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:51,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,102 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:51,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:51,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2021-08-27 13:56:51,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:51,102 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:51,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,182 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:51,182 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:51,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,184 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 13:56:51,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:51,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:51,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:51,213 INFO L440 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: [] [2021-08-27 13:56:51,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:51,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:51,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 13:56:51,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:51,264 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:51,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,283 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-27 13:56:51,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:51,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:51,296 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:51,296 INFO L440 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: [] [2021-08-27 13:56:51,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-27 13:56:51,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:51,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:51,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-27 13:56:51,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:51,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:51,437 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:51,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,443 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:51,443 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:51,443 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:51,443 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:51,443 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:51,443 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,443 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:51,443 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:51,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2021-08-27 13:56:51,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:51,444 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:51,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:51,555 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:51,555 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:51,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,557 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:51,578 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:51,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:51,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:51,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:51,583 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:51,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:51,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-27 13:56:51,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:51,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,622 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-27 13:56:51,627 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:51,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:51,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:51,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:51,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:51,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:51,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:51,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:51,638 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:51,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,669 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-27 13:56:51,675 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:51,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:51,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:51,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:51,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:51,692 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:51,692 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:51,712 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:51,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-08-27 13:56:51,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,732 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-27 13:56:51,739 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:51,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:51,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:51,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:51,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:51,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:51,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:51,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:51,752 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:51,772 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:56:51,772 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 13:56:51,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:51,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:51,773 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:51,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-27 13:56:51,775 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:51,775 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:51,775 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:51,775 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-08-27 13:56:51,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:51,790 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:51,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:51,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:51,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:51,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:51,862 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 [2021-08-27 13:56:51,862 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:51,886 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 49 transitions. Complement of second has 6 states. [2021-08-27 13:56:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-08-27 13:56:51,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2021-08-27 13:56:51,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:51,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2021-08-27 13:56:51,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:51,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2021-08-27 13:56:51,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:51,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 49 transitions. [2021-08-27 13:56:51,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:56:51,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 42 transitions. [2021-08-27 13:56:51,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-08-27 13:56:51,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-08-27 13:56:51,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 42 transitions. [2021-08-27 13:56:51,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:51,896 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 42 transitions. [2021-08-27 13:56:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 42 transitions. [2021-08-27 13:56:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-08-27 13:56:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2021-08-27 13:56:51,901 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 38 transitions. [2021-08-27 13:56:51,901 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 38 transitions. [2021-08-27 13:56:51,901 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 13:56:51,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 38 transitions. [2021-08-27 13:56:51,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:56:51,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:51,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:51,903 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 13:56:51,903 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:56:51,904 INFO L791 eck$LassoCheckResult]: Stem: 163#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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; 164#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 165#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 170#L23 [2021-08-27 13:56:51,904 INFO L793 eck$LassoCheckResult]: Loop: 170#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 173#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 179#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 170#L23 [2021-08-27 13:56:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-08-27 13:56:51,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:51,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647041137] [2021-08-27 13:56:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:51,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,917 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,930 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:51,931 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2021-08-27 13:56:51,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:51,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745173483] [2021-08-27 13:56:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:51,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,935 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,938 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash 925834452, now seen corresponding path program 1 times [2021-08-27 13:56:51,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:51,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000105851] [2021-08-27 13:56:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:51,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,949 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:51,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:52,014 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:52,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:52,014 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:52,014 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:52,014 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:52,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:52,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:52,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2021-08-27 13:56:52,015 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:52,015 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:52,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:52,144 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:52,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,149 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 13:56:52,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:52,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:52,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:52,182 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:52,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,209 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:52,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:52,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 13:56:52,237 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:52,237 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:52,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,259 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 13:56:52,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:52,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:52,285 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:52,285 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:52,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,313 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 13:56:52,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:52,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:52,337 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:52,337 INFO L440 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: [] [2021-08-27 13:56:52,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,365 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 13:56:52,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:52,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:52,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,416 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 13:56:52,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:52,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:52,517 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:52,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,523 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:52,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:52,523 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:52,523 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:52,523 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:52,523 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,523 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:52,523 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:52,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2021-08-27 13:56:52,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:52,524 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:52,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:52,626 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:52,626 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:52,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,627 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 13:56:52,630 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:52,636 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:52,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:52,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:52,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:52,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:52,638 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:52,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:52,652 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:52,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,675 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 13:56:52,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:52,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:52,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:52,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:52,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:52,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:52,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:52,686 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:52,700 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:52,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,726 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:52,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:52,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:52,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:52,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:52,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:52,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:52,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:52,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 13:56:52,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:52,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 13:56:52,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:52,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:52,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:52,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:52,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:52,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:52,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:52,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:52,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:52,802 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:56:52,802 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:56:52,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:52,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:52,803 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:52,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-27 13:56:52,805 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:52,806 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:52,806 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:52,806 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-08-27 13:56:52,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,831 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:52,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:52,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:52,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:52,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:52,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:52,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:52,917 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 [2021-08-27 13:56:52,917 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 38 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:52,936 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 38 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 54 states and 85 transitions. Complement of second has 7 states. [2021-08-27 13:56:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-08-27 13:56:52,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 3 letters. [2021-08-27 13:56:52,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:52,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2021-08-27 13:56:52,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:52,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 6 letters. [2021-08-27 13:56:52,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:52,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 85 transitions. [2021-08-27 13:56:52,939 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-08-27 13:56:52,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 49 states and 78 transitions. [2021-08-27 13:56:52,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-08-27 13:56:52,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-08-27 13:56:52,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 78 transitions. [2021-08-27 13:56:52,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:52,940 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 78 transitions. [2021-08-27 13:56:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 78 transitions. [2021-08-27 13:56:52,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-08-27 13:56:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 46 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 76 transitions. [2021-08-27 13:56:52,944 INFO L704 BuchiCegarLoop]: Abstraction has 47 states and 76 transitions. [2021-08-27 13:56:52,945 INFO L587 BuchiCegarLoop]: Abstraction has 47 states and 76 transitions. [2021-08-27 13:56:52,945 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 13:56:52,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 76 transitions. [2021-08-27 13:56:52,946 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-08-27 13:56:52,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:52,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:52,946 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2021-08-27 13:56:52,946 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:56:52,946 INFO L791 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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; 284#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 285#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 323#L23 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 312#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 299#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 298#L23 [2021-08-27 13:56:52,946 INFO L793 eck$LassoCheckResult]: Loop: 298#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 308#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 309#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 298#L23 [2021-08-27 13:56:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 2 times [2021-08-27 13:56:52,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:52,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333815305] [2021-08-27 13:56:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:52,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:52,952 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:52,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 2 times [2021-08-27 13:56:52,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:52,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886361398] [2021-08-27 13:56:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:52,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:52,961 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:52,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:52,965 INFO L82 PathProgramCache]: Analyzing trace with hash -803054137, now seen corresponding path program 1 times [2021-08-27 13:56:52,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:52,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554598137] [2021-08-27 13:56:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:52,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:52,971 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:52,976 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:53,018 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:53,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:53,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:53,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:53,018 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:53,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:53,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:53,018 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2021-08-27 13:56:53,018 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:53,018 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:53,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,109 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:53,109 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:53,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,113 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:53,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:53,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-08-27 13:56:53,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:53,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:53,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:53,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,168 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-08-27 13:56:53,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:53,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:53,186 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:53,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=4, ULTIMATE.start_main_#t~nondet6=4} Honda state: {ULTIMATE.start_main_~x~0=4, ULTIMATE.start_main_#t~nondet6=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:53,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:53,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,212 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-08-27 13:56:53,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:53,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:53,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:53,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:53,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:53,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,268 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-08-27 13:56:53,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:53,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:53,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:53,325 INFO L440 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: [] [2021-08-27 13:56:53,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:53,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,351 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-08-27 13:56:53,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:53,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:53,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-08-27 13:56:53,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,391 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-08-27 13:56:53,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:53,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:53,457 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:53,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:53,460 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:53,460 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:53,460 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:53,460 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:53,460 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:53,460 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:53,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:53,461 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2021-08-27 13:56:53,461 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:53,461 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:53,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:53,567 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:53,567 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:53,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,581 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-08-27 13:56:53,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:53,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:53,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:53,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:53,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:53,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:53,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:53,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:53,602 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:53,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-08-27 13:56:53,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,621 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-08-27 13:56:53,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:53,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:53,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:53,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:53,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:53,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:53,630 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:53,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:53,668 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:53,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-08-27 13:56:53,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,691 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-08-27 13:56:53,694 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:53,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:53,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:53,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:53,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:53,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:53,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:53,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:53,704 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:53,705 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:56:53,705 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:56:53,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:53,706 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:53,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-08-27 13:56:53,709 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:53,709 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:53,709 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:53,709 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-08-27 13:56:53,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:53,727 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:53,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:53,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:53,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:53,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:53,835 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 [2021-08-27 13:56:53,836 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:53,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:53,854 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 65 states and 102 transitions. Complement of second has 7 states. [2021-08-27 13:56:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-08-27 13:56:53,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2021-08-27 13:56:53,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:53,855 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 13:56:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:53,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:53,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:53,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:53,924 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 [2021-08-27 13:56:53,924 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:53,950 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 60 states and 95 transitions. Complement of second has 7 states. [2021-08-27 13:56:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-08-27 13:56:53,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2021-08-27 13:56:53,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:53,952 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 13:56:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:53,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:53,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:53,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:53,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:54,025 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 [2021-08-27 13:56:54,025 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:54,047 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 137 transitions. Complement of second has 9 states. [2021-08-27 13:56:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-08-27 13:56:54,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 3 letters. [2021-08-27 13:56:54,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:54,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 3 letters. [2021-08-27 13:56:54,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:54,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 6 letters. [2021-08-27 13:56:54,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:54,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 137 transitions. [2021-08-27 13:56:54,056 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-08-27 13:56:54,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 66 states and 103 transitions. [2021-08-27 13:56:54,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-08-27 13:56:54,058 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-27 13:56:54,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 103 transitions. [2021-08-27 13:56:54,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:54,058 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 103 transitions. [2021-08-27 13:56:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 103 transitions. [2021-08-27 13:56:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 38. [2021-08-27 13:56:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2021-08-27 13:56:54,067 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2021-08-27 13:56:54,067 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2021-08-27 13:56:54,067 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 13:56:54,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 61 transitions. [2021-08-27 13:56:54,069 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-08-27 13:56:54,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:54,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:54,069 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-08-27 13:56:54,069 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:54,070 INFO L791 eck$LassoCheckResult]: Stem: 671#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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; 672#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 689#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 680#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 681#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 702#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 673#L23-2 [2021-08-27 13:56:54,070 INFO L793 eck$LassoCheckResult]: Loop: 673#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 674#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 673#L23-2 [2021-08-27 13:56:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:54,070 INFO L82 PathProgramCache]: Analyzing trace with hash 925834450, now seen corresponding path program 1 times [2021-08-27 13:56:54,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:54,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820696412] [2021-08-27 13:56:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:54,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,092 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:54,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2021-08-27 13:56:54,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:54,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914582546] [2021-08-27 13:56:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:54,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,100 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash 668676501, now seen corresponding path program 2 times [2021-08-27 13:56:54,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:54,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396917906] [2021-08-27 13:56:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:54,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,107 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:54,150 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:54,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:54,150 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:54,150 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:54,150 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:54,150 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,150 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:54,150 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:54,150 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2021-08-27 13:56:54,150 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:54,150 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:54,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,206 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:54,207 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:54,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,216 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-08-27 13:56:54,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,231 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,231 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:54,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-08-27 13:56:54,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,247 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-08-27 13:56:54,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,264 INFO L440 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: [] [2021-08-27 13:56:54,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,280 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-08-27 13:56:54,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,293 INFO L440 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: [] [2021-08-27 13:56:54,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,310 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-08-27 13:56:54,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,323 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,323 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=-1} Honda state: {ULTIMATE.start_main_#t~nondet3=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:54,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-08-27 13:56:54,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,339 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-08-27 13:56:54,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,363 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-08-27 13:56:54,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:54,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,393 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:54,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-08-27 13:56:54,396 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:54,396 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:54,396 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:54,396 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:54,396 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:54,396 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,396 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:54,396 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:54,396 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2021-08-27 13:56:54,397 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:54,397 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:54,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,465 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:54,465 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:54,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,466 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-08-27 13:56:54,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:54,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:54,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:54,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:54,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:54,479 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:54,479 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:54,491 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:54,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-08-27 13:56:54,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,511 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-08-27 13:56:54,513 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:54,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:54,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:54,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:54,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:54,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:54,529 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:54,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:54,530 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:54,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,546 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-08-27 13:56:54,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:54,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:54,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:54,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:54,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:54,556 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:54,556 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:54,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:54,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,579 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-08-27 13:56:54,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:54,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:54,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:54,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:54,591 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 13:56:54,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:54,591 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 13:56:54,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:54,604 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:54,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,620 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-08-27 13:56:54,624 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:54,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:54,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:54,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:54,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:54,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:54,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:54,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:54,635 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:54,636 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:56:54,637 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 13:56:54,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,641 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-08-27 13:56:54,642 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:54,642 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:54,642 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:54,642 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 13:56:54,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,658 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:54,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:54,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:54,700 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:54,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:54,717 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 [2021-08-27 13:56:54,717 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 61 transitions. cyclomatic complexity: 30 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:54,728 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 61 transitions. cyclomatic complexity: 30. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 100 states and 153 transitions. Complement of second has 5 states. [2021-08-27 13:56:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-08-27 13:56:54,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2021-08-27 13:56:54,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:54,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2021-08-27 13:56:54,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:54,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-08-27 13:56:54,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:54,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 153 transitions. [2021-08-27 13:56:54,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-08-27 13:56:54,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 82 states and 129 transitions. [2021-08-27 13:56:54,732 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-08-27 13:56:54,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-08-27 13:56:54,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 129 transitions. [2021-08-27 13:56:54,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:54,732 INFO L681 BuchiCegarLoop]: Abstraction has 82 states and 129 transitions. [2021-08-27 13:56:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 129 transitions. [2021-08-27 13:56:54,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2021-08-27 13:56:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 69 states have (on average 1.608695652173913) internal successors, (111), 68 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 111 transitions. [2021-08-27 13:56:54,736 INFO L704 BuchiCegarLoop]: Abstraction has 69 states and 111 transitions. [2021-08-27 13:56:54,736 INFO L587 BuchiCegarLoop]: Abstraction has 69 states and 111 transitions. [2021-08-27 13:56:54,736 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-27 13:56:54,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 111 transitions. [2021-08-27 13:56:54,737 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-08-27 13:56:54,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:54,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:54,738 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2021-08-27 13:56:54,738 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:54,738 INFO L791 eck$LassoCheckResult]: Stem: 854#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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; 855#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 898#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 915#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 858#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 868#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 891#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 887#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 871#L23-2 [2021-08-27 13:56:54,738 INFO L793 eck$LassoCheckResult]: Loop: 871#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 870#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 871#L23-2 [2021-08-27 13:56:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash 602338671, now seen corresponding path program 3 times [2021-08-27 13:56:54,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:54,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557227310] [2021-08-27 13:56:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:54,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,744 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2021-08-27 13:56:54,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:54,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57612555] [2021-08-27 13:56:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:54,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,751 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:54,754 INFO L82 PathProgramCache]: Analyzing trace with hash -973121806, now seen corresponding path program 4 times [2021-08-27 13:56:54,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:54,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884435756] [2021-08-27 13:56:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:54,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,758 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:54,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:54,788 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:54,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:54,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:54,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:54,788 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:54,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:54,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:54,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2021-08-27 13:56:54,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:54,789 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:54,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:54,844 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:54,845 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:54,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,851 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-08-27 13:56:54,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,863 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,864 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:54,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-08-27 13:56:54,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,881 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-08-27 13:56:54,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:54,910 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,910 INFO L440 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: [] [2021-08-27 13:56:54,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-08-27 13:56:54,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,925 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-08-27 13:56:54,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,937 INFO L440 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: [] [2021-08-27 13:56:54,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-08-27 13:56:54,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,953 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-08-27 13:56:54,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:54,964 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:54,965 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=-1} Honda state: {ULTIMATE.start_main_#t~nondet3=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:54,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-08-27 13:56:54,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:54,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:54,980 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:54,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-08-27 13:56:54,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:54,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:55,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:55,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:55,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:55,003 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:55,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-08-27 13:56:55,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:55,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:55,030 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:55,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-08-27 13:56:55,032 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:55,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:55,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:55,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:55,033 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:55,033 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:55,033 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:55,033 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:55,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2021-08-27 13:56:55,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:55,033 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:55,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:55,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:55,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:55,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:55,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:55,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:55,084 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:55,084 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:55,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:55,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:55,085 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:55,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-08-27 13:56:55,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:55,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:55,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:55,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:55,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:55,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:55,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:55,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:55,108 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:55,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:55,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:55,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:55,130 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:55,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-08-27 13:56:55,132 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:55,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:55,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:55,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:55,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:55,142 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:55,142 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:55,144 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:55,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:55,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:55,160 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:55,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-08-27 13:56:55,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:55,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:55,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:55,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:55,168 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 13:56:55,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:55,169 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 13:56:55,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:55,172 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:55,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:55,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:55,188 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:55,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-08-27 13:56:55,226 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:56:55,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:55,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:55,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:55,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:55,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:55,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:55,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:55,256 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:55,268 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:56:55,268 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:56:55,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:55,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:55,272 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:55,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-08-27 13:56:55,275 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:55,275 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:55,275 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:55,275 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 13:56:55,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-08-27 13:56:55,291 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:55,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:55,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:55,337 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:55,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:55,364 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 [2021-08-27 13:56:55,364 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:55,374 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 109 states and 164 transitions. Complement of second has 5 states. [2021-08-27 13:56:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-08-27 13:56:55,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2021-08-27 13:56:55,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:55,376 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 13:56:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:55,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:55,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:55,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:55,439 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:55,458 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:56:55,458 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:55,467 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 109 states and 164 transitions. Complement of second has 5 states. [2021-08-27 13:56:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-08-27 13:56:55,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2021-08-27 13:56:55,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:55,469 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 13:56:55,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:55,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:55,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:55,513 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:55,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:55,527 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:56:55,528 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:55,538 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 125 states and 192 transitions. Complement of second has 4 states. [2021-08-27 13:56:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-08-27 13:56:55,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 2 letters. [2021-08-27 13:56:55,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:55,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-27 13:56:55,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:55,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2021-08-27 13:56:55,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:55,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 192 transitions. [2021-08-27 13:56:55,541 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:56:55,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 0 states and 0 transitions. [2021-08-27 13:56:55,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 13:56:55,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 13:56:55,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 13:56:55,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 13:56:55,542 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:55,542 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:55,542 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:55,542 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-27 13:56:55,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 13:56:55,543 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:56:55,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 13:56:55,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 01:56:55 BoogieIcfgContainer [2021-08-27 13:56:55,548 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 13:56:55,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 13:56:55,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 13:56:55,548 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 13:56:55,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:49" (3/4) ... [2021-08-27 13:56:55,551 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 13:56:55,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 13:56:55,552 INFO L168 Benchmark]: Toolchain (without parser) took 6265.04 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 27.5 MB in the beginning and 57.2 MB in the end (delta: -29.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:55,552 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:55,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.87 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 30.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:55,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.59 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 30.5 MB in the beginning and 45.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:55,553 INFO L168 Benchmark]: Boogie Preprocessor took 15.95 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 44.2 MB in the end (delta: 884.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:55,553 INFO L168 Benchmark]: RCFGBuilder took 268.87 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 35.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:55,554 INFO L168 Benchmark]: BuchiAutomizer took 5767.01 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 34.8 MB in the beginning and 57.2 MB in the end (delta: -22.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:55,554 INFO L168 Benchmark]: Witness Printer took 2.88 ms. Allocated memory is still 107.0 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:55,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 152.87 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 30.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.59 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 30.5 MB in the beginning and 45.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.95 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 44.2 MB in the end (delta: 884.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.87 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 35.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5767.01 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 34.8 MB in the beginning and 57.2 MB in the end (delta: -22.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * Witness Printer took 2.88 ms. Allocated memory is still 107.0 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function z and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.7s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 4.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 28.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 69 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 81 SDtfs, 81 SDslu, 35 SDs, 0 SdLazy, 73 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.2ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax153 hnf100 lsp29 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 45ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 21 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 13:56:55,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...