./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.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 413fc6a41e04b7b618ff9ab274418b4a8dcf040d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:34:17,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:34:17,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:34:17,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:34:17,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:34:17,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:34:17,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:34:17,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:34:17,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:34:17,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:34:17,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:34:17,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:34:17,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:34:17,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:34:17,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:34:17,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:34:17,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:34:17,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:34:17,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:34:17,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:34:17,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:34:17,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:34:17,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:34:17,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:34:17,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:34:17,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:34:17,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:34:17,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:34:17,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:34:17,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:34:17,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:34:17,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:34:17,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:34:17,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:34:17,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:34:17,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:34:17,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:34:17,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:34:17,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:34:17,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:34:17,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:34:17,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:34:17,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:34:17,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:34:17,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:34:17,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:34:17,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:34:17,530 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:34:17,530 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:34:17,530 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:34:17,530 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:34:17,531 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:34:17,531 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:34:17,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:34:17,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:34:17,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:34:17,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:34:17,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:34:17,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:34:17,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:34:17,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:34:17,532 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:34:17,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:34:17,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:34:17,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:34:17,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:34:17,533 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:34:17,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:34:17,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:34:17,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:34:17,534 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:34:17,535 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:34:17,535 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 413fc6a41e04b7b618ff9ab274418b4a8dcf040d [2020-10-20 06:34:17,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:34:17,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:34:17,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:34:17,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:34:17,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:34:17,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2020-10-20 06:34:17,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b594f7ec/f536139fe8b14525b8e100e424ba4599/FLAG4e04b48ca [2020-10-20 06:34:18,334 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:18,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2020-10-20 06:34:18,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b594f7ec/f536139fe8b14525b8e100e424ba4599/FLAG4e04b48ca [2020-10-20 06:34:18,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b594f7ec/f536139fe8b14525b8e100e424ba4599 [2020-10-20 06:34:18,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:18,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:18,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:18,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:18,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:18,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:18,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e89de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18, skipping insertion in model container [2020-10-20 06:34:18,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:18,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:18,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:18,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:18,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:18,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:18,964 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:18,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18 WrapperNode [2020-10-20 06:34:18,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:18,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:18,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:18,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:18,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:18,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:18,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:18,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:18,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:18,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:19,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:19,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:19,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:19,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:19,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:19,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:19,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... [2020-10-20 06:34:19,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:19,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:19,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:19,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:19,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:19,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:19,224 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:19,224 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:34:19,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:19 BoogieIcfgContainer [2020-10-20 06:34:19,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:19,227 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:19,227 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:19,230 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:19,231 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:19,232 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:18" (1/3) ... [2020-10-20 06:34:19,233 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64139c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:19, skipping insertion in model container [2020-10-20 06:34:19,233 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:19,233 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:18" (2/3) ... [2020-10-20 06:34:19,234 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64139c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:19, skipping insertion in model container [2020-10-20 06:34:19,234 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:19,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:19" (3/3) ... [2020-10-20 06:34:19,236 INFO L373 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b.c [2020-10-20 06:34:19,289 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:19,290 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:19,290 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:19,290 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:19,290 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:19,290 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:19,290 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:19,291 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:19,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:34:19,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:19,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:19,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:19,337 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:19,337 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:34:19,337 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:19,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:34:19,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:19,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:19,339 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:19,339 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:34:19,339 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:34:19,348 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~M~0 > 0; 7#L19-2true [2020-10-20 06:34:19,348 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 != main_~M~0); 9#L19true assume main_~x~0 > main_~M~0;main_~x~0 := 0; 7#L19-2true [2020-10-20 06:34:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:19,355 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-10-20 06:34:19,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:19,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683415654] [2020-10-20 06:34:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:19,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:19,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:19,465 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:19,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2020-10-20 06:34:19,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:19,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620688284] [2020-10-20 06:34:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:19,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:19,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:19,483 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2020-10-20 06:34:19,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:19,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727981501] [2020-10-20 06:34:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:19,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:19,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:19,516 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:19,626 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:19,627 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:19,627 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:19,627 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:19,627 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:19,628 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:19,628 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:19,628 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:19,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2020-10-20 06:34:19,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:19,629 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:19,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:19,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:19,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:19,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:19,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:19,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:19,790 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:19,791 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:19,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:19,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:19,814 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:19,814 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:19,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:19,840 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:19,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:19,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:19,996 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:19,998 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:19,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:19,998 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:19,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:19,999 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:19,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:19,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:19,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:19,999 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2020-10-20 06:34:20,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:20,001 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:20,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,109 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:20,115 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:20,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:20,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:20,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:20,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:20,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:20,137 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:20,137 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:20,144 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:20,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:20,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:20,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:20,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:20,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:20,196 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:20,197 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:20,205 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:20,220 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-10-20 06:34:20,221 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:20,238 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:20,242 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-20 06:34:20,243 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:20,243 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~M~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~M~0 >= 0] [2020-10-20 06:34:20,285 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-10-20 06:34:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:20,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:34:20,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:20,355 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:34:20,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:20,403 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 06:34:20,405 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-10-20 06:34:20,483 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2020-10-20 06:34:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 06:34:20,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-20 06:34:20,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:20,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:34:20,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:20,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-20 06:34:20,492 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:20,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-10-20 06:34:20,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:20,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2020-10-20 06:34:20,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-20 06:34:20,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-20 06:34:20,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-20 06:34:20,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:20,504 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-20 06:34:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-20 06:34:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 06:34:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:34:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-10-20 06:34:20,534 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-20 06:34:20,534 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-20 06:34:20,534 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:34:20,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-10-20 06:34:20,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:20,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:20,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:20,536 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:34:20,536 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:34:20,537 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L17 assume main_~M~0 > 0; 88#L19-2 assume !!(main_~x~0 != main_~M~0); 87#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 83#L19-2 [2020-10-20 06:34:20,537 INFO L796 eck$LassoCheckResult]: Loop: 83#L19-2 assume !!(main_~x~0 != main_~M~0); 84#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 83#L19-2 [2020-10-20 06:34:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2020-10-20 06:34:20,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:20,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442027550] [2020-10-20 06:34:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,550 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:20,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:20,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2020-10-20 06:34:20,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:20,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113231729] [2020-10-20 06:34:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,560 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2020-10-20 06:34:20,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:20,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42045629] [2020-10-20 06:34:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:20,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42045629] [2020-10-20 06:34:20,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654875830] [2020-10-20 06:34:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:34:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:20,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:20,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:34:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:20,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:34:20,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-20 06:34:20,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405389826] [2020-10-20 06:34:20,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:34:20,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:34:20,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:34:20,715 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-10-20 06:34:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:34:20,752 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2020-10-20 06:34:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:34:20,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2020-10-20 06:34:20,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:20,755 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 10 transitions. [2020-10-20 06:34:20,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:34:20,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-20 06:34:20,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-10-20 06:34:20,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:20,756 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-10-20 06:34:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-10-20 06:34:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-20 06:34:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:34:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-10-20 06:34:20,758 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-10-20 06:34:20,759 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-10-20 06:34:20,759 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:34:20,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-10-20 06:34:20,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:20,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:20,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:20,760 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:34:20,761 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:34:20,761 INFO L794 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 124#L17 assume main_~M~0 > 0; 125#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2020-10-20 06:34:20,761 INFO L796 eck$LassoCheckResult]: Loop: 127#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 126#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2020-10-20 06:34:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-10-20 06:34:20,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:20,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123263168] [2020-10-20 06:34:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,771 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:20,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2020-10-20 06:34:20,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:20,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467451341] [2020-10-20 06:34:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,781 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:20,782 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2020-10-20 06:34:20,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:20,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702558768] [2020-10-20 06:34:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:20,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:20,794 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:20,810 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:20,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:20,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:20,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:20,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:20,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:20,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:20,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:20,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2020-10-20 06:34:20,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:20,811 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:20,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:20,923 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:20,923 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:20,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:20,927 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:20,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:20,931 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:20,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:20,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:20,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:20,963 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:20,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:20,987 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:21,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:21,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:34:23,471 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:23,473 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:23,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:23,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:23,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:23,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:23,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:23,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:23,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:23,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2020-10-20 06:34:23,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:23,474 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:23,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:23,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:23,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:23,576 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:23,576 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:23,596 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:23,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:23,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:23,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:23,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:23,605 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:23,605 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:23,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:23,639 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:23,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:23,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:23,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:34:23,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:23,644 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:34:23,644 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:34:23,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:23,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:23,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:23,679 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:23,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:23,680 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:34:23,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:23,682 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:34:23,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:23,694 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:23,698 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:23,698 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:23,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:23,721 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:23,721 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:23,721 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~M~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~M~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:23,759 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:23,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:23,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:23,788 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:23,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:23,820 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 [2020-10-20 06:34:23,820 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-20 06:34:23,831 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2020-10-20 06:34:23,832 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 [2020-10-20 06:34:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-20 06:34:23,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:34:23,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:23,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:34:23,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:23,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-10-20 06:34:23,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:23,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2020-10-20 06:34:23,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:23,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2020-10-20 06:34:23,836 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-20 06:34:23,836 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:34:23,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2020-10-20 06:34:23,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:34:23,836 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-10-20 06:34:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2020-10-20 06:34:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-20 06:34:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:34:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2020-10-20 06:34:23,838 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-10-20 06:34:23,839 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-10-20 06:34:23,839 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:34:23,839 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2020-10-20 06:34:23,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:34:23,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:23,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:23,841 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-10-20 06:34:23,841 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:34:23,841 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L17 assume main_~M~0 > 0; 180#L19-2 assume !!(main_~x~0 != main_~M~0); 181#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 182#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2020-10-20 06:34:23,841 INFO L796 eck$LassoCheckResult]: Loop: 183#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 184#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2020-10-20 06:34:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2020-10-20 06:34:23,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:23,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592741577] [2020-10-20 06:34:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:23,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:23,851 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:23,855 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:23,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2020-10-20 06:34:23,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:23,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641186086] [2020-10-20 06:34:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:23,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:23,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:23,887 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2020-10-20 06:34:23,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:23,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133378137] [2020-10-20 06:34:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:23,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:23,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:23,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:23,936 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:23,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:23,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:23,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:23,937 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:34:23,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:23,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:23,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:23,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2020-10-20 06:34:23,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:23,938 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:23,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:23,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:23,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:24,023 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:24,023 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:24,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:24,035 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:24,040 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:34:24,040 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:24,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:34:24,090 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:24,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:34:24,148 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:26,288 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:34:26,290 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:34:26,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:34:26,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:34:26,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:34:26,291 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:34:26,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:26,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:34:26,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:34:26,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2020-10-20 06:34:26,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:34:26,291 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:34:26,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:26,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:26,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:34:26,393 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:34:26,393 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:26,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:34:26,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:34:26,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:34:26,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:34:26,416 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:34:26,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:34:26,421 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:34:26,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:34:26,433 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:34:26,439 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:34:26,439 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:34:26,464 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:34:26,464 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:34:26,464 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:34:26,464 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~M~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:26,503 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:34:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:26,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:26,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:26,529 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:26,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:26,559 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 [2020-10-20 06:34:26,559 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 06:34:26,566 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2020-10-20 06:34:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2020-10-20 06:34:26,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:34:26,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:26,569 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:26,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:26,632 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:26,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:26,668 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 [2020-10-20 06:34:26,668 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 06:34:26,675 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2020-10-20 06:34:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-20 06:34:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2020-10-20 06:34:26,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:34:26,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:26,678 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:34:26,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:26,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:34:26,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:34:26,704 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:34:26,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:34:26,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:34:26,729 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 [2020-10-20 06:34:26,729 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-20 06:34:26,739 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2020-10-20 06:34:26,739 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 [2020-10-20 06:34:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:34:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:34:26,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:34:26,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:26,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 06:34:26,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:26,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 06:34:26,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:34:26,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-10-20 06:34:26,742 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:26,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-10-20 06:34:26,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:34:26,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:34:26,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:34:26,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:34:26,743 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:26,743 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:26,743 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:34:26,743 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:34:26,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:34:26,743 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:34:26,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:34:26,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:26 BoogieIcfgContainer [2020-10-20 06:34:26,750 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:26,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:26,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:26,751 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:26,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:19" (3/4) ... [2020-10-20 06:34:26,755 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:34:26,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:26,758 INFO L168 Benchmark]: Toolchain (without parser) took 8063.63 ms. Allocated memory was 35.1 MB in the beginning and 53.0 MB in the end (delta: 17.8 MB). Free memory was 14.9 MB in the beginning and 21.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,759 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 33.0 MB. Free memory was 8.8 MB in the beginning and 8.7 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.67 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 14.0 MB in the beginning and 26.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.56 ms. Allocated memory is still 43.5 MB. Free memory was 26.0 MB in the beginning and 24.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,761 INFO L168 Benchmark]: Boogie Preprocessor took 15.18 ms. Allocated memory is still 43.5 MB. Free memory was 24.5 MB in the beginning and 23.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,762 INFO L168 Benchmark]: RCFGBuilder took 216.28 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 23.3 MB in the beginning and 25.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,763 INFO L168 Benchmark]: BuchiAutomizer took 7523.46 ms. Allocated memory was 45.1 MB in the beginning and 53.0 MB in the end (delta: 7.9 MB). Free memory was 25.5 MB in the beginning and 21.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,763 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 53.0 MB. Free memory was 21.5 MB in the beginning and 21.0 MB in the end (delta: 500.9 kB). Peak memory consumption was 500.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 33.0 MB. Free memory was 8.8 MB in the beginning and 8.7 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 266.67 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 14.0 MB in the beginning and 26.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 28.56 ms. Allocated memory is still 43.5 MB. Free memory was 26.0 MB in the beginning and 24.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 15.18 ms. Allocated memory is still 43.5 MB. Free memory was 24.5 MB in the beginning and 23.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 216.28 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 23.3 MB in the beginning and 25.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 7523.46 ms. Allocated memory was 45.1 MB in the beginning and 53.0 MB in the end (delta: 7.9 MB). Free memory was 25.5 MB in the beginning and 21.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * Witness Printer took 4.57 ms. Allocated memory is still 53.0 MB. Free memory was 21.5 MB in the beginning and 21.0 MB in the end (delta: 500.9 kB). Peak memory consumption was 500.9 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * M + x and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 2 * M + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * M + -2 * x + 1 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 26 SDtfs, 23 SDslu, 3 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax196 hnf97 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf94 smp100 dnf143 smp85 tf104 neg95 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...