./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/PodelskiRybalchenko-TACAS2011-Fig1.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 16d1f6cd78d7cc073e9077e844c6915079dedfe5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:28:56,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:28:56,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:28:56,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:28:56,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:28:56,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:28:56,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:28:56,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:28:56,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:28:56,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:28:56,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:28:56,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:28:56,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:28:56,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:28:56,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:28:56,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:28:56,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:28:56,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:28:56,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:28:56,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:28:56,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:28:56,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:28:56,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:28:56,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:28:56,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:28:56,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:28:56,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:28:56,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:28:56,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:28:56,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:28:56,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:28:56,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:28:56,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:28:56,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:28:56,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:28:56,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:28:56,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:28:56,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:28:56,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:28:56,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:28:56,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:28:56,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-07-29 01:28:56,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:28:56,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:28:56,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:28:56,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:28:56,903 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:28:56,904 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 01:28:56,904 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 01:28:56,904 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 01:28:56,905 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 01:28:56,905 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 01:28:56,905 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 01:28:56,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:28:56,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:28:56,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:28:56,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:28:56,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 01:28:56,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 01:28:56,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 01:28:56,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:28:56,909 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 01:28:56,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:28:56,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 01:28:56,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:28:56,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:28:56,911 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 01:28:56,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:28:56,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:28:56,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:28:56,912 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 01:28:56,913 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 01:28:56,913 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 -> 16d1f6cd78d7cc073e9077e844c6915079dedfe5 [2020-07-29 01:28:57,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:28:57,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:28:57,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:28:57,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:28:57,256 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:28:57,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c [2020-07-29 01:28:57,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613f9d5ca/4b5e2781f52e48e9992abb53fd3d68e4/FLAGe021784da [2020-07-29 01:28:57,812 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:28:57,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig1.c [2020-07-29 01:28:57,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613f9d5ca/4b5e2781f52e48e9992abb53fd3d68e4/FLAGe021784da [2020-07-29 01:28:58,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613f9d5ca/4b5e2781f52e48e9992abb53fd3d68e4 [2020-07-29 01:28:58,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:28:58,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:28:58,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:28:58,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:28:58,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:28:58,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4921b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58, skipping insertion in model container [2020-07-29 01:28:58,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:28:58,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:28:58,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:28:58,386 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:28:58,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:28:58,418 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:28:58,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58 WrapperNode [2020-07-29 01:28:58,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:28:58,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:28:58,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:28:58,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:28:58,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:28:58,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:28:58,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:28:58,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:28:58,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (1/1) ... [2020-07-29 01:28:58,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:28:58,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:28:58,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:28:58,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:28:58,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (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 [2020-07-29 01:28:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:28:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:28:58,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:28:58,780 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 01:28:58,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:28:58 BoogieIcfgContainer [2020-07-29 01:28:58,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:28:58,785 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 01:28:58,785 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 01:28:58,789 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 01:28:58,790 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:28:58,790 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 01:28:58" (1/3) ... [2020-07-29 01:28:58,791 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@112ca69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:28:58, skipping insertion in model container [2020-07-29 01:28:58,791 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:28:58,792 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:28:58" (2/3) ... [2020-07-29 01:28:58,792 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@112ca69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 01:28:58, skipping insertion in model container [2020-07-29 01:28:58,792 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 01:28:58,792 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:28:58" (3/3) ... [2020-07-29 01:28:58,794 INFO L371 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig1.c [2020-07-29 01:28:58,854 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 01:28:58,854 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 01:28:58,854 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 01:28:58,855 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:28:58,855 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:28:58,855 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 01:28:58,855 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:28:58,855 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 01:28:58,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-29 01:28:58,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-29 01:28:58,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:58,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:58,897 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 01:28:58,897 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-29 01:28:58,897 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 01:28:58,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-29 01:28:58,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-29 01:28:58,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:28:58,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:28:58,900 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 01:28:58,900 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-29 01:28:58,907 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~y~0;havoc main_~y~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L16-2true [2020-07-29 01:28:58,907 INFO L796 eck$LassoCheckResult]: Loop: 8#L16-2true assume !!(main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 8#L16-2true [2020-07-29 01:28:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-07-29 01:28:58,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:58,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668992855] [2020-07-29 01:28:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:58,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:58,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:59,012 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:59,013 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-07-29 01:28:59,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:59,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395766398] [2020-07-29 01:28:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:59,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:59,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:59,030 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-07-29 01:28:59,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:28:59,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169164664] [2020-07-29 01:28:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:28:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:59,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:28:59,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:28:59,045 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:28:59,278 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-29 01:28:59,295 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:28:59,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:28:59,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:28:59,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:28:59,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 01:28:59,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:59,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:28:59,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:28:59,298 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig1.c_Iteration1_Loop [2020-07-29 01:28:59,298 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:28:59,298 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:28:59,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:59,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:59,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:59,564 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:28:59,565 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) [2020-07-29 01:28:59,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 01:28:59,578 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-29 01:28:59,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 01:28:59,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 01:28:59,666 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 01:28:59,668 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 01:28:59,668 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 01:28:59,668 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 01:28:59,668 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 01:28:59,668 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 01:28:59,669 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:59,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 01:28:59,669 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 01:28:59,669 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig1.c_Iteration1_Loop [2020-07-29 01:28:59,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 01:28:59,670 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 01:28:59,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:59,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:59,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 01:28:59,804 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 01:28:59,809 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-07-29 01:28:59,817 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 Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:59,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 01:28:59,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 01:28:59,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 01:28:59,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 01:28:59,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 01:28:59,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 01:28:59,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 01:28:59,828 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 01:28:59,835 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-29 01:28:59,835 INFO L444 ModelExtractionUtils]: 0 out of 3 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 01:28:59,849 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 01:28:59,849 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 01:28:59,850 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 01:28:59,851 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 01:28:59,889 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 01:28:59,893 INFO L393 LassoCheck]: Loop: "assume !!(main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1;" [2020-07-29 01:28:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:28:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:59,938 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 01:28:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:59,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:28:59,953 INFO L280 TraceCheckUtils]: 0: Hoare triple {16#unseeded} havoc main_#res;havoc main_#t~nondet0, main_~y~0;havoc main_~y~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0; {16#unseeded} is VALID [2020-07-29 01:28:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:59,959 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 01:28:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:28:59,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 01:28:59,965 INFO L280 TraceCheckUtils]: 0: Hoare triple {19#(>= oldRank0 (+ (* 2 ULTIMATE.start_main_~y~0) 1))} assume !!(main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; {29#(or unseeded (and (> oldRank0 (+ (* 2 ULTIMATE.start_main_~y~0) 1)) (>= oldRank0 0)))} is VALID [2020-07-29 01:28:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:28:59,976 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-29 01:28:59,983 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:28:59,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:28:59,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:28:59,994 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 [2020-07-29 01:28:59,996 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2020-07-29 01:29:00,052 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states.. Second operand 2 states. Result 15 states and 18 transitions. Complement of second has 5 states. [2020-07-29 01:29:00,053 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 [2020-07-29 01:29:00,053 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:29:00,054 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-29 01:29:00,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-29 01:29:00,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:29:00,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:29:00,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-29 01:29:00,059 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-29 01:29:00,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 01:29:00,060 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 01:29:00,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2020-07-29 01:29:00,061 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:29:00,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 01:29:00,064 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 6 states. [2020-07-29 01:29:00,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-29 01:29:00,066 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2020-07-29 01:29:00,066 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 2 states. [2020-07-29 01:29:00,067 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-29 01:29:00,068 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 2 examples of accepted words. [2020-07-29 01:29:00,068 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 15 states and 18 transitions. cyclomatic complexity: 4 [2020-07-29 01:29:00,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. cyclomatic complexity: 4 [2020-07-29 01:29:00,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 01:29:00,069 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 0 examples of accepted words. [2020-07-29 01:29:00,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 15 letters. Loop has 15 letters. [2020-07-29 01:29:00,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 15 letters. Loop has 15 letters. [2020-07-29 01:29:00,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 15 letters. Loop has 15 letters. [2020-07-29 01:29:00,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 6 letters. Loop has 6 letters. [2020-07-29 01:29:00,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 6 letters. Loop has 6 letters. [2020-07-29 01:29:00,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 6 letters. Loop has 6 letters. [2020-07-29 01:29:00,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:29:00,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:29:00,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 4 letters. Loop has 4 letters. [2020-07-29 01:29:00,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:29:00,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:29:00,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:29:00,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 18 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,083 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 01:29:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-29 01:29:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-29 01:29:00,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2020-07-29 01:29:00,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-29 01:29:00,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-29 01:29:00,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 01:29:00,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. cyclomatic complexity: 4 [2020-07-29 01:29:00,092 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:29:00,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-07-29 01:29:00,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 01:29:00,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 01:29:00,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 01:29:00,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 01:29:00,098 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:29:00,099 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:29:00,099 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 01:29:00,099 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 01:29:00,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 01:29:00,100 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 01:29:00,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 01:29:00,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 01:29:00 BoogieIcfgContainer [2020-07-29 01:29:00,107 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 01:29:00,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:29:00,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:29:00,108 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:29:00,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:28:58" (3/4) ... [2020-07-29 01:29:00,113 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 01:29:00,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:29:00,116 INFO L168 Benchmark]: Toolchain (without parser) took 1946.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 956.2 MB in the beginning and 1.0 GB in the end (delta: -63.2 MB). Peak memory consumption was 77.3 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:00,117 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:29:00,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.32 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:00,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.09 ms. Allocated memory is still 1.0 GB. Free memory is still 945.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:29:00,119 INFO L168 Benchmark]: Boogie Preprocessor took 75.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:00,120 INFO L168 Benchmark]: RCFGBuilder took 250.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:00,121 INFO L168 Benchmark]: BuchiAutomizer took 1322.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.9 MB). Peak memory consumption was 99.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:29:00,122 INFO L168 Benchmark]: Witness Printer took 5.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:29:00,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.32 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 945.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.09 ms. Allocated memory is still 1.0 GB. Free memory is still 945.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 250.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1322.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.9 MB). Peak memory consumption was 99.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 5 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...