./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/c.08.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 e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:12:30,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:12:30,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:12:30,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:12:30,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:12:30,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:12:30,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:12:30,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:12:30,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:12:30,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:12:30,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:12:30,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:12:30,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:12:30,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:12:30,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:12:30,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:12:30,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:12:30,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:12:30,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:12:30,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:12:30,875 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:12:30,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:12:30,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:12:30,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:12:30,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:12:30,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:12:30,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:12:30,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:12:30,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:12:30,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:12:30,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:12:30,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:12:30,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:12:30,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:12:30,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:12:30,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:12:30,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:12:30,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:12:30,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:12:30,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:12:30,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:12:30,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:12:30,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:12:30,923 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:12:30,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:12:30,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:12:30,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:12:30,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:12:30,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:12:30,926 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:12:30,926 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:12:30,926 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:12:30,927 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:12:30,927 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:12:30,927 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:12:30,927 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:12:30,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:12:30,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:12:30,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:12:30,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:12:30,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:12:30,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:12:30,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:12:30,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:12:30,930 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:12:30,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:12:30,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:12:30,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:12:30,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:12:30,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:12:30,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:12:30,932 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:12:30,932 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 [2022-07-13 03:12:31,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:12:31,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:12:31,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:12:31,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:12:31,175 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:12:31,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/c.08.c [2022-07-13 03:12:31,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dcd267b/a8364d1954034947b0a9b56c6c74e5a2/FLAG9042143b7 [2022-07-13 03:12:31,679 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:12:31,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/c.08.c [2022-07-13 03:12:31,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dcd267b/a8364d1954034947b0a9b56c6c74e5a2/FLAG9042143b7 [2022-07-13 03:12:32,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dcd267b/a8364d1954034947b0a9b56c6c74e5a2 [2022-07-13 03:12:32,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:12:32,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:12:32,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:12:32,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:12:32,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:12:32,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5619aa85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32, skipping insertion in model container [2022-07-13 03:12:32,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:12:32,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:12:32,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:12:32,270 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:12:32,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:12:32,291 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:12:32,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32 WrapperNode [2022-07-13 03:12:32,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:12:32,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:12:32,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:12:32,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:12:32,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,320 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2022-07-13 03:12:32,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:12:32,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:12:32,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:12:32,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:12:32,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:12:32,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:12:32,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:12:32,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:12:32,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (1/1) ... [2022-07-13 03:12:32,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:32,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:32,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:32,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-13 03:12:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:12:32,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:12:32,436 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:12:32,437 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:12:32,487 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:12:32,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:12:32,492 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 03:12:32,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:12:32 BoogieIcfgContainer [2022-07-13 03:12:32,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:12:32,494 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:12:32,494 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:12:32,501 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:12:32,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:12:32,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:12:32" (1/3) ... [2022-07-13 03:12:32,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23da5fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:12:32, skipping insertion in model container [2022-07-13 03:12:32,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:12:32,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:12:32" (2/3) ... [2022-07-13 03:12:32,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23da5fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:12:32, skipping insertion in model container [2022-07-13 03:12:32,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:12:32,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:12:32" (3/3) ... [2022-07-13 03:12:32,504 INFO L354 chiAutomizerObserver]: Analyzing ICFG c.08.c [2022-07-13 03:12:32,544 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:12:32,544 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:12:32,544 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:12:32,544 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:12:32,544 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:12:32,544 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:12:32,544 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:12:32,544 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:12:32,547 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:32,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:32,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:32,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:32,563 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:12:32,563 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:12:32,563 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:12:32,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:32,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:12:32,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:32,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:32,565 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:12:32,565 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:12:32,568 INFO L752 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 4#L10-2true [2022-07-13 03:12:32,569 INFO L754 eck$LassoCheckResult]: Loop: 4#L10-2true assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 2#L12-2true assume !(main_~j~0#1 <= main_~i~0#1 - 1); 7#L12-3true main_~i~0#1 := main_~i~0#1 - 1; 4#L10-2true [2022-07-13 03:12:32,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:32,573 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:12:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947019711] [2022-07-13 03:12:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:32,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:32,629 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:32,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-07-13 03:12:32,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:32,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223850812] [2022-07-13 03:12:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:32,656 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:32,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-07-13 03:12:32,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:32,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768513440] [2022-07-13 03:12:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:32,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:32,671 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:32,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:32,743 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:32,744 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:32,744 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:32,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:32,744 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:12:32,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:32,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:32,745 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:32,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2022-07-13 03:12:32,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:32,745 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:32,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:32,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:32,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:32,858 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:32,859 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:12:32,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:32,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:32,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:32,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:32,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-13 03:12:32,911 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:32,911 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:12:32,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:32,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:32,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:32,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:32,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-13 03:12:32,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:32,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:32,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:32,954 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:12:32,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:32,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:32,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:32,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:32,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-13 03:12:32,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:32,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:33,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-13 03:12:33,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:12:33,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:33,066 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:12:33,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,071 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:33,071 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:33,071 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:33,071 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:33,071 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:12:33,071 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,071 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:33,071 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:33,071 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2022-07-13 03:12:33,071 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:33,071 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:33,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:33,148 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:12:33,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-13 03:12:33,155 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:12:33,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:33,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:33,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:33,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:33,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:12:33,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:12:33,197 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:12:33,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-13 03:12:33,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:12:33,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:33,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:12:33,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:33,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:33,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:33,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:12:33,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:12:33,244 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:12:33,247 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:12:33,247 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:12:33,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,249 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-13 03:12:33,255 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:12:33,255 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:12:33,256 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:12:33,256 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-07-13 03:12:33,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,284 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:12:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:33,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:12:33,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:33,348 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:12:33,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:33,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:12:33,445 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 [2022-07-13 03:12:33,447 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:33,483 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2022-07-13 03:12:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-13 03:12:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-07-13 03:12:33,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-13 03:12:33,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:33,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-13 03:12:33,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:33,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-13 03:12:33,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:33,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2022-07-13 03:12:33,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:12:33,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-13 03:12:33,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-07-13 03:12:33,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-13 03:12:33,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-13 03:12:33,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:12:33,497 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-13 03:12:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-13 03:12:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-07-13 03:12:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2022-07-13 03:12:33,512 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-07-13 03:12:33,512 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-07-13 03:12:33,512 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:12:33,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2022-07-13 03:12:33,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:12:33,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:33,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:33,513 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 03:12:33,513 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:12:33,514 INFO L752 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 78#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 75#L12-2 [2022-07-13 03:12:33,514 INFO L754 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 75#L12-2 [2022-07-13 03:12:33,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-13 03:12:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:33,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816446044] [2022-07-13 03:12:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:33,519 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:33,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-07-13 03:12:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:33,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940888475] [2022-07-13 03:12:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:33,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:33,526 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:33,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:33,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-07-13 03:12:33,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:33,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948551757] [2022-07-13 03:12:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:33,535 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:33,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:33,555 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:33,555 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:33,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:33,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:33,556 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:12:33,556 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,556 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:33,556 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:33,560 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2022-07-13 03:12:33,560 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:33,560 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:33,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,596 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:33,596 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:12:33,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-13 03:12:33,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:33,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:33,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:33,615 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: [] [2022-07-13 03:12:33,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,632 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-13 03:12:33,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:33,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:33,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-13 03:12:33,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:12:33,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:33,768 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:12:33,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,772 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:33,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:33,772 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:33,772 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:33,772 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:12:33,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:33,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:33,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2022-07-13 03:12:33,773 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:33,773 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:33,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:33,815 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:33,815 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:12:33,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-13 03:12:33,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:12:33,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:33,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:33,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:33,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:33,838 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:12:33,838 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:12:33,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:12:33,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,882 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:12:33,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:33,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:12:33,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:33,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:33,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:33,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:12:33,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:12:33,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-13 03:12:33,894 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:12:33,897 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-13 03:12:33,897 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:12:33,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:33,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:33,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:33,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-13 03:12:33,900 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:12:33,900 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:12:33,900 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:12:33,900 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-07-13 03:12:33,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:33,919 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:12:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:33,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:12:33,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:33,954 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:12:33,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:12:33,958 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 [2022-07-13 03:12:33,958 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:33,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2022-07-13 03:12:33,976 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 [2022-07-13 03:12:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-13 03:12:33,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2022-07-13 03:12:33,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:33,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-13 03:12:33,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:33,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-13 03:12:33,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:33,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-07-13 03:12:33,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:12:33,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2022-07-13 03:12:33,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-07-13 03:12:33,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-07-13 03:12:33,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2022-07-13 03:12:33,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:12:33,982 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 14 transitions. [2022-07-13 03:12:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2022-07-13 03:12:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-07-13 03:12:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-07-13 03:12:33,985 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-13 03:12:33,986 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-13 03:12:33,989 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:12:33,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-07-13 03:12:33,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:12:33,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:12:33,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:12:33,991 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-07-13 03:12:33,991 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:12:33,991 INFO L752 eck$LassoCheckResult]: Stem: 133#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 134#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 131#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 129#L12-2 assume !(main_~j~0#1 <= main_~i~0#1 - 1); 130#L12-3 main_~i~0#1 := main_~i~0#1 - 1; 132#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 128#L12-2 [2022-07-13 03:12:33,991 INFO L754 eck$LassoCheckResult]: Loop: 128#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 128#L12-2 [2022-07-13 03:12:33,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2022-07-13 03:12:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:33,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134704570] [2022-07-13 03:12:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:12:34,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:12:34,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134704570] [2022-07-13 03:12:34,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134704570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:12:34,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:12:34,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 03:12:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614195531] [2022-07-13 03:12:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:12:34,034 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:12:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-07-13 03:12:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:12:34,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475303580] [2022-07-13 03:12:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:12:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:12:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:34,039 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:12:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:12:34,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:12:34,051 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:34,052 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:34,052 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:34,052 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:34,052 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:12:34,052 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:34,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:34,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:34,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2022-07-13 03:12:34,053 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:34,053 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:34,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:34,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:34,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:34,087 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:34,087 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:12:34,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:34,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:34,089 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:34,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:34,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:34,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-13 03:12:34,115 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:12:34,116 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: [] [2022-07-13 03:12:34,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:34,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:34,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:34,143 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:34,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:12:34,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:34,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-13 03:12:34,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:34,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:34,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:34,197 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:34,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-13 03:12:34,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:12:34,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:12:34,306 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:12:34,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:34,312 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:12:34,312 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:12:34,312 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:12:34,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:12:34,312 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:12:34,312 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:34,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:12:34,312 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:12:34,312 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2022-07-13 03:12:34,312 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:12:34,313 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:12:34,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:34,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:34,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:12:34,368 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:12:34,368 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:12:34,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:34,370 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:34,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-13 03:12:34,373 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:12:34,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:12:34,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:12:34,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:12:34,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:12:34,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:12:34,383 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:12:34,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:12:34,402 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:12:34,405 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:12:34,405 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:12:34,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:12:34,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:12:34,448 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:12:34,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-13 03:12:34,450 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:12:34,451 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:12:34,451 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:12:34,451 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-07-13 03:12:34,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-13 03:12:34,469 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:12:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:34,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:12:34,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:34,509 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:12:34,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:12:34,511 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 [2022-07-13 03:12:34,511 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:34,525 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2022-07-13 03:12:34,526 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 [2022-07-13 03:12:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-13 03:12:34,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2022-07-13 03:12:34,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:34,528 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:12:34,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:34,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:12:34,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:34,557 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:12:34,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:12:34,558 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-13 03:12:34,558 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:34,567 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2022-07-13 03:12:34,568 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 [2022-07-13 03:12:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-13 03:12:34,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2022-07-13 03:12:34,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:34,569 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:12:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:12:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:34,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:12:34,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:12:34,601 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:12:34,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:12:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:12:34,602 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-13 03:12:34,602 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:34,635 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 4 states. [2022-07-13 03:12:34,636 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 [2022-07-13 03:12:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-07-13 03:12:34,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2022-07-13 03:12:34,637 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:34,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-13 03:12:34,637 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:34,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-13 03:12:34,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:12:34,638 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2022-07-13 03:12:34,639 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:12:34,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2022-07-13 03:12:34,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:12:34,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:12:34,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:12:34,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:12:34,639 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:34,639 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:12:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 03:12:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 03:12:34,643 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:12:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:12:34,645 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-13 03:12:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 03:12:34,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-13 03:12:34,646 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:12:34,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 03:12:34,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:12:34,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:12:34,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:12:34,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:12:34,647 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:34,647 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:34,647 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:12:34,647 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:12:34,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 03:12:34,647 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:12:34,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 03:12:34,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:12:34 BoogieIcfgContainer [2022-07-13 03:12:34,654 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:12:34,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:12:34,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:12:34,654 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:12:34,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:12:32" (3/4) ... [2022-07-13 03:12:34,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 03:12:34,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:12:34,660 INFO L158 Benchmark]: Toolchain (without parser) took 2548.13ms. Allocated memory is still 119.5MB. Free memory was 83.2MB in the beginning and 90.9MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:34,660 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 119.5MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:34,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.48ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 96.1MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:12:34,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.87ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:34,661 INFO L158 Benchmark]: Boogie Preprocessor took 21.04ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 93.6MB in the end (delta: 913.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:12:34,662 INFO L158 Benchmark]: RCFGBuilder took 150.02ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 85.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:12:34,662 INFO L158 Benchmark]: BuchiAutomizer took 2159.22ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 91.8MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:34,663 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 119.5MB. Free memory was 91.8MB in the beginning and 90.9MB in the end (delta: 899.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:12:34,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2022-07-13 03:12:34,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 119.5MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.48ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 96.1MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.87ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.04ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 93.6MB in the end (delta: 913.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 150.02ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 85.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2159.22ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 91.8MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 119.5MB. Free memory was 91.8MB in the beginning and 90.9MB in the end (delta: 899.4kB). There was no memory consumed. Max. memory is 16.1GB. * 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 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function -1 * j + i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 20 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax187 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf93 smp96 dnf100 smp100 tf110 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating [2022-07-13 03:12:34,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 RESULT: Ultimate proved your program to be correct! [2022-07-13 03:12:34,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE