./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 35987657 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/loop-invgen/nest-if3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 02:20:36,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 02:20:36,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 02:20:36,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 02:20:36,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 02:20:36,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 02:20:36,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 02:20:36,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 02:20:36,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 02:20:36,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 02:20:36,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 02:20:36,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 02:20:36,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 02:20:36,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 02:20:36,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 02:20:36,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 02:20:36,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 02:20:36,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 02:20:36,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 02:20:36,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 02:20:36,957 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 02:20:36,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 02:20:36,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 02:20:36,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 02:20:36,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 02:20:36,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 02:20:36,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 02:20:36,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 02:20:36,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 02:20:36,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 02:20:36,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 02:20:36,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 02:20:36,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 02:20:36,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 02:20:36,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 02:20:36,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 02:20:36,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 02:20:36,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 02:20:36,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 02:20:36,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 02:20:36,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 02:20:36,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 02:20:36,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-22 02:20:37,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 02:20:37,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 02:20:37,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 02:20:37,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 02:20:37,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 02:20:37,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 02:20:37,026 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 02:20:37,026 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 02:20:37,026 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 02:20:37,027 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 02:20:37,028 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 02:20:37,028 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 02:20:37,028 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 02:20:37,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 02:20:37,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 02:20:37,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 02:20:37,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 02:20:37,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 02:20:37,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 02:20:37,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 02:20:37,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 02:20:37,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 02:20:37,030 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 02:20:37,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 02:20:37,030 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 02:20:37,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 02:20:37,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 02:20:37,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 02:20:37,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 02:20:37,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 02:20:37,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 02:20:37,034 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 02:20:37,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 [2022-07-22 02:20:37,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 02:20:37,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 02:20:37,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 02:20:37,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 02:20:37,354 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 02:20:37,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nest-if3.i [2022-07-22 02:20:37,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f471e83/484118a72d634653b3b6a30e6b1f77ff/FLAGa75182a5e [2022-07-22 02:20:37,918 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 02:20:37,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i [2022-07-22 02:20:37,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f471e83/484118a72d634653b3b6a30e6b1f77ff/FLAGa75182a5e [2022-07-22 02:20:38,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f471e83/484118a72d634653b3b6a30e6b1f77ff [2022-07-22 02:20:38,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 02:20:38,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 02:20:38,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 02:20:38,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 02:20:38,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 02:20:38,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2b0df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38, skipping insertion in model container [2022-07-22 02:20:38,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 02:20:38,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 02:20:38,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i[893,906] [2022-07-22 02:20:38,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 02:20:38,602 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 02:20:38,642 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i[893,906] [2022-07-22 02:20:38,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 02:20:38,664 INFO L208 MainTranslator]: Completed translation [2022-07-22 02:20:38,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38 WrapperNode [2022-07-22 02:20:38,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 02:20:38,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 02:20:38,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 02:20:38,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 02:20:38,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,696 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-07-22 02:20:38,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 02:20:38,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 02:20:38,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 02:20:38,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 02:20:38,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 02:20:38,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 02:20:38,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 02:20:38,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 02:20:38,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (1/1) ... [2022-07-22 02:20:38,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:38,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:38,769 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) [2022-07-22 02:20:38,781 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 [2022-07-22 02:20:38,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 02:20:38,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 02:20:38,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 02:20:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 02:20:38,872 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 02:20:38,874 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 02:20:39,002 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 02:20:39,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 02:20:39,009 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 02:20:39,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:20:39 BoogieIcfgContainer [2022-07-22 02:20:39,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 02:20:39,012 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 02:20:39,012 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 02:20:39,014 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 02:20:39,015 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 02:20:39,015 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 02:20:38" (1/3) ... [2022-07-22 02:20:39,016 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b7081e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 02:20:39, skipping insertion in model container [2022-07-22 02:20:39,017 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 02:20:39,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:20:38" (2/3) ... [2022-07-22 02:20:39,017 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b7081e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 02:20:39, skipping insertion in model container [2022-07-22 02:20:39,017 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 02:20:39,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:20:39" (3/3) ... [2022-07-22 02:20:39,019 INFO L354 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2022-07-22 02:20:39,066 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 02:20:39,066 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 02:20:39,066 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 02:20:39,066 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 02:20:39,067 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 02:20:39,067 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 02:20:39,067 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 02:20:39,067 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 02:20:39,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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) [2022-07-22 02:20:39,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-22 02:20:39,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 02:20:39,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 02:20:39,091 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 02:20:39,092 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-22 02:20:39,092 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 02:20:39,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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) [2022-07-22 02:20:39,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-22 02:20:39,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 02:20:39,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 02:20:39,095 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 02:20:39,095 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-22 02:20:39,101 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 12#L28true assume !!(main_~l~0#1 > 0); 5#L29true assume !!(main_~l~0#1 < 1000000); 4#L30true assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 7#L31-3true [2022-07-22 02:20:39,102 INFO L754 eck$LassoCheckResult]: Loop: 7#L31-3true assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 11#L32-3true assume !true; 16#L32-4true assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~l~0#1 := 1 + main_~l~0#1; 13#L31-2true main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 7#L31-3true [2022-07-22 02:20:39,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2022-07-22 02:20:39,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:39,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810561988] [2022-07-22 02:20:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:39,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,196 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1715099, now seen corresponding path program 1 times [2022-07-22 02:20:39,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:39,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789548898] [2022-07-22 02:20:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:39,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:39,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 02:20:39,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789548898] [2022-07-22 02:20:39,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789548898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 02:20:39,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 02:20:39,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 02:20:39,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096024988] [2022-07-22 02:20:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 02:20:39,264 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-22 02:20:39,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 02:20:39,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 02:20:39,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 02:20:39,295 INFO L87 Difference]: Start difference. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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 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) [2022-07-22 02:20:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 02:20:39,301 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2022-07-22 02:20:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 02:20:39,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2022-07-22 02:20:39,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-07-22 02:20:39,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 14 transitions. [2022-07-22 02:20:39,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-07-22 02:20:39,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-07-22 02:20:39,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2022-07-22 02:20:39,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 02:20:39,313 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-22 02:20:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2022-07-22 02:20:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 02:20:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-07-22 02:20:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-07-22 02:20:39,336 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-22 02:20:39,336 INFO L374 stractBuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-22 02:20:39,336 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 02:20:39,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2022-07-22 02:20:39,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-07-22 02:20:39,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 02:20:39,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 02:20:39,338 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 02:20:39,338 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-22 02:20:39,338 INFO L752 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 45#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 49#L28 assume !!(main_~l~0#1 > 0); 50#L29 assume !!(main_~l~0#1 < 1000000); 46#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 47#L31-3 [2022-07-22 02:20:39,339 INFO L754 eck$LassoCheckResult]: Loop: 47#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 41#L32-3 assume !(main_~i~0#1 < main_~n~0#1); 48#L32-4 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~l~0#1 := 1 + main_~l~0#1; 51#L31-2 main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 47#L31-3 [2022-07-22 02:20:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2022-07-22 02:20:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:39,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900964231] [2022-07-22 02:20:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:39,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1699723, now seen corresponding path program 1 times [2022-07-22 02:20:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:39,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229590653] [2022-07-22 02:20:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,380 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1271724211, now seen corresponding path program 1 times [2022-07-22 02:20:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:39,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328813808] [2022-07-22 02:20:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,423 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:39,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:39,564 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 02:20:39,565 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 02:20:39,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 02:20:39,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 02:20:39,566 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 02:20:39,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:39,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 02:20:39,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 02:20:39,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2022-07-22 02:20:39,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 02:20:39,567 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 02:20:39,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:39,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:39,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:39,699 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 02:20:39,699 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 02:20:39,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:39,707 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) [2022-07-22 02:20:39,712 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 [2022-07-22 02:20:39,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:39,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:39,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 02:20:39,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 02:20:39,765 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 [2022-07-22 02:20:39,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:39,780 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) [2022-07-22 02:20:39,783 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 [2022-07-22 02:20:39,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:39,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:39,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 02:20:39,816 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=4} Honda state: {ULTIMATE.start_main_#t~nondet5#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 02:20:39,843 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 [2022-07-22 02:20:39,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:39,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:39,845 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) [2022-07-22 02:20:39,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:39,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:39,870 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 [2022-07-22 02:20:39,910 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 [2022-07-22 02:20:39,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:39,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:39,913 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) [2022-07-22 02:20:39,914 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 [2022-07-22 02:20:39,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 02:20:39,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:40,222 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 02:20:40,227 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 [2022-07-22 02:20:40,228 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 02:20:40,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 02:20:40,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 02:20:40,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 02:20:40,228 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 02:20:40,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 02:20:40,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 02:20:40,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2022-07-22 02:20:40,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 02:20:40,229 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 02:20:40,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:40,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:40,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:40,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 02:20:40,306 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 02:20:40,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:40,312 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) [2022-07-22 02:20:40,314 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 [2022-07-22 02:20:40,316 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 [2022-07-22 02:20:40,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:40,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:40,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:40,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 02:20:40,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:40,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 02:20:40,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:40,345 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 02:20:40,376 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 [2022-07-22 02:20:40,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:40,380 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) [2022-07-22 02:20:40,385 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 [2022-07-22 02:20:40,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:40,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:40,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:40,395 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-22 02:20:40,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:40,395 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 [2022-07-22 02:20:40,397 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-22 02:20:40,397 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:40,419 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 02:20:40,439 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 [2022-07-22 02:20:40,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:40,441 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) [2022-07-22 02:20:40,443 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 [2022-07-22 02:20:40,446 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 [2022-07-22 02:20:40,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:40,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:40,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:40,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 02:20:40,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:40,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 02:20:40,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:40,471 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 02:20:40,475 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 02:20:40,475 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 02:20:40,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:40,478 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) [2022-07-22 02:20:40,479 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 [2022-07-22 02:20:40,482 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 02:20:40,482 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 02:20:40,483 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 02:20:40,483 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-07-22 02:20:40,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-07-22 02:20:40,505 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 02:20:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:40,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 02:20:40,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:40,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 02:20:40,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:40,603 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 [2022-07-22 02:20:40,604 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-22 02:20:40,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Result 20 states and 26 transitions. Complement of second has 4 states. [2022-07-22 02:20:40,641 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 [2022-07-22 02:20:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-22 02:20:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2022-07-22 02:20:40,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-22 02:20:40,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:40,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-22 02:20:40,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:40,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 8 letters. [2022-07-22 02:20:40,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:40,647 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2022-07-22 02:20:40,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 02:20:40,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 22 transitions. [2022-07-22 02:20:40,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-07-22 02:20:40,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-22 02:20:40,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2022-07-22 02:20:40,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 02:20:40,658 INFO L369 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-07-22 02:20:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2022-07-22 02:20:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-07-22 02:20:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-07-22 02:20:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-07-22 02:20:40,662 INFO L392 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-07-22 02:20:40,663 INFO L374 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-07-22 02:20:40,663 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-22 02:20:40,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2022-07-22 02:20:40,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 02:20:40,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 02:20:40,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 02:20:40,666 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-07-22 02:20:40,666 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-22 02:20:40,667 INFO L752 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 130#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 132#L28 assume !!(main_~l~0#1 > 0); 133#L29 assume !!(main_~l~0#1 < 1000000); 127#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 128#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 120#L32-3 [2022-07-22 02:20:40,667 INFO L754 eck$LassoCheckResult]: Loop: 120#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 123#L18 assume !(0 == __VERIFIER_assert_~cond#1); 124#L18-2 assume { :end_inline___VERIFIER_assert } true; 119#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 120#L32-3 [2022-07-22 02:20:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2022-07-22 02:20:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:40,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627377136] [2022-07-22 02:20:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:40,707 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:40,717 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 [2022-07-22 02:20:40,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1946442, now seen corresponding path program 1 times [2022-07-22 02:20:40,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:40,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451388976] [2022-07-22 02:20:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:40,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:40,741 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:40,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:40,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash 768793561, now seen corresponding path program 1 times [2022-07-22 02:20:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:40,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163486262] [2022-07-22 02:20:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:40,762 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:40,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:40,857 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 02:20:40,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 02:20:40,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 02:20:40,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 02:20:40,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 02:20:40,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 02:20:40,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 02:20:40,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2022-07-22 02:20:40,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 02:20:40,858 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 02:20:40,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:40,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:40,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:40,911 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 02:20:40,911 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 02:20:40,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:40,913 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) [2022-07-22 02:20:40,915 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 [2022-07-22 02:20:40,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:40,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:40,939 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 02:20:40,939 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 02:20:40,967 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 [2022-07-22 02:20:40,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:40,969 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) [2022-07-22 02:20:40,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:40,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:40,986 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 [2022-07-22 02:20:40,999 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 02:20:41,000 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 02:20:41,024 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 [2022-07-22 02:20:41,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,027 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) [2022-07-22 02:20:41,028 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 [2022-07-22 02:20:41,031 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:41,031 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:41,082 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 [2022-07-22 02:20:41,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,084 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) [2022-07-22 02:20:41,089 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 [2022-07-22 02:20:41,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 02:20:41,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:41,224 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 02:20:41,295 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 [2022-07-22 02:20:41,296 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 02:20:41,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 02:20:41,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 02:20:41,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 02:20:41,296 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 02:20:41,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 02:20:41,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 02:20:41,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2022-07-22 02:20:41,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 02:20:41,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 02:20:41,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:41,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:41,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:41,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 02:20:41,352 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 02:20:41,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,353 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) [2022-07-22 02:20:41,355 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 [2022-07-22 02:20:41,356 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 [2022-07-22 02:20:41,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:41,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:41,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:41,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 02:20:41,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:41,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 02:20:41,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:41,379 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 02:20:41,404 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 [2022-07-22 02:20:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,406 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) [2022-07-22 02:20:41,408 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 [2022-07-22 02:20:41,409 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 [2022-07-22 02:20:41,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:41,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:41,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:41,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 02:20:41,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:41,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 02:20:41,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:41,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 02:20:41,456 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 [2022-07-22 02:20:41,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,458 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) [2022-07-22 02:20:41,460 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 [2022-07-22 02:20:41,461 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 [2022-07-22 02:20:41,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:41,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:41,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:41,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 02:20:41,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:41,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 02:20:41,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:41,491 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 02:20:41,495 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 02:20:41,495 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 02:20:41,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,500 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) [2022-07-22 02:20:41,505 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 02:20:41,505 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 02:20:41,505 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 02:20:41,505 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-07-22 02:20:41,523 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 [2022-07-22 02:20:41,532 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 [2022-07-22 02:20:41,533 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 02:20:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:41,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 02:20:41,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:41,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 02:20:41,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-07-22 02:20:41,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:41,627 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 [2022-07-22 02:20:41,627 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-07-22 02:20:41,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) Result 38 states and 47 transitions. Complement of second has 7 states. [2022-07-22 02:20:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 02:20:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-07-22 02:20:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-07-22 02:20:41,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2022-07-22 02:20:41,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:41,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-07-22 02:20:41,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:41,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2022-07-22 02:20:41,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:41,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 47 transitions. [2022-07-22 02:20:41,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 02:20:41,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 24 states and 30 transitions. [2022-07-22 02:20:41,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-07-22 02:20:41,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-22 02:20:41,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-07-22 02:20:41,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 02:20:41,646 INFO L369 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-07-22 02:20:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-07-22 02:20:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2022-07-22 02:20:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-07-22 02:20:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-07-22 02:20:41,649 INFO L392 hiAutomatonCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-07-22 02:20:41,649 INFO L374 stractBuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-07-22 02:20:41,649 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-22 02:20:41,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2022-07-22 02:20:41,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 02:20:41,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 02:20:41,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 02:20:41,650 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 02:20:41,650 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-22 02:20:41,651 INFO L752 eck$LassoCheckResult]: Stem: 236#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 237#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post4#1, main_#t~nondet5#1, main_#t~post3#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 241#L28 assume !!(main_~l~0#1 > 0); 242#L29 assume !!(main_~l~0#1 < 1000000); 238#L30 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 239#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 231#L32-3 assume !(main_~i~0#1 < main_~n~0#1); 240#L32-4 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1; 243#L31-2 main_#t~post3#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 244#L31-3 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 229#L32-3 [2022-07-22 02:20:41,651 INFO L754 eck$LassoCheckResult]: Loop: 229#L32-3 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 232#L18 assume !(0 == __VERIFIER_assert_~cond#1); 233#L18-2 assume { :end_inline___VERIFIER_assert } true; 228#L32-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 229#L32-3 [2022-07-22 02:20:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash 768746824, now seen corresponding path program 1 times [2022-07-22 02:20:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:41,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664945225] [2022-07-22 02:20:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:41,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:41,660 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:41,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1946442, now seen corresponding path program 2 times [2022-07-22 02:20:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:41,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878983085] [2022-07-22 02:20:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:41,673 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 02:20:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 02:20:41,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 02:20:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 37608721, now seen corresponding path program 1 times [2022-07-22 02:20:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 02:20:41,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008285354] [2022-07-22 02:20:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:41,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 02:20:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:41,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 02:20:41,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008285354] [2022-07-22 02:20:41,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008285354] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 02:20:41,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577039117] [2022-07-22 02:20:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 02:20:41,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 02:20:41,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,732 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 02:20:41,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 02:20:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:41,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 02:20:41,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:41,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 02:20:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:41,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577039117] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 02:20:41,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 02:20:41,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-07-22 02:20:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162346582] [2022-07-22 02:20:41,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 02:20:41,895 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 02:20:41,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 02:20:41,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 02:20:41,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 02:20:41,896 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 02:20:41,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 02:20:41,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 02:20:41,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2022-07-22 02:20:41,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 02:20:41,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 02:20:41,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:41,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:41,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:41,943 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 02:20:41,943 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 02:20:41,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,945 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) [2022-07-22 02:20:41,948 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 [2022-07-22 02:20:41,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:41,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:41,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 02:20:41,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 02:20:41,990 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 [2022-07-22 02:20:41,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:41,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:41,991 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 02:20:41,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-22 02:20:41,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 02:20:41,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:42,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-22 02:20:42,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:42,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:42,059 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 02:20:42,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 02:20:42,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 02:20:42,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-22 02:20:42,119 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 02:20:42,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-22 02:20:42,123 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 02:20:42,123 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 02:20:42,123 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 02:20:42,123 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 02:20:42,123 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 02:20:42,123 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:42,123 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 02:20:42,123 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 02:20:42,123 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2022-07-22 02:20:42,123 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 02:20:42,124 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 02:20:42,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:42,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:42,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 02:20:42,189 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 02:20:42,190 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 02:20:42,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:42,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:42,196 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 02:20:42,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-22 02:20:42,200 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 [2022-07-22 02:20:42,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:42,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:42,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:42,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 02:20:42,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:42,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 02:20:42,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:42,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 02:20:42,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-22 02:20:42,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:42,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:42,248 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 02:20:42,252 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 [2022-07-22 02:20:42,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 02:20:42,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 02:20:42,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 02:20:42,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 02:20:42,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 02:20:42,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 02:20:42,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 02:20:42,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-22 02:20:42,275 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 02:20:42,278 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 02:20:42,278 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 02:20:42,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 02:20:42,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 02:20:42,280 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 02:20:42,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-22 02:20:42,281 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 02:20:42,281 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 02:20:42,281 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 02:20:42,281 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-07-22 02:20:42,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-07-22 02:20:42,299 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 02:20:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:42,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 02:20:42,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:42,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 02:20:42,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:42,374 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 [2022-07-22 02:20:42,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-22 02:20:42,396 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 30 states and 37 transitions. Complement of second has 7 states. [2022-07-22 02:20:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 02:20:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-22 02:20:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-07-22 02:20:42,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-07-22 02:20:42,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:42,398 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 02:20:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:42,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 02:20:42,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:42,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 02:20:42,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:42,469 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 02:20:42,469 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-22 02:20:42,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 30 states and 37 transitions. Complement of second has 7 states. [2022-07-22 02:20:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 02:20:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-22 02:20:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-07-22 02:20:42,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-07-22 02:20:42,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:42,481 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 02:20:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 02:20:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:42,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 02:20:42,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 02:20:42,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 02:20:42,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 02:20:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 02:20:42,531 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 02:20:42,531 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-22 02:20:42,542 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 27 states and 32 transitions. Complement of second has 6 states. [2022-07-22 02:20:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 02:20:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-22 02:20:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-07-22 02:20:42,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2022-07-22 02:20:42,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:42,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 14 letters. Loop has 4 letters. [2022-07-22 02:20:42,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:42,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 10 letters. Loop has 8 letters. [2022-07-22 02:20:42,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 02:20:42,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2022-07-22 02:20:42,545 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 02:20:42,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2022-07-22 02:20:42,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 02:20:42,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 02:20:42,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 02:20:42,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 02:20:42,545 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 02:20:42,545 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 02:20:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 02:20:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 02:20:42,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 02:20:42,546 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-07-22 02:20:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 02:20:42,546 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-22 02:20:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 02:20:42,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-22 02:20:42,547 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 02:20:42,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 02:20:42,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 02:20:42,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 02:20:42,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 02:20:42,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 02:20:42,547 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 02:20:42,548 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 02:20:42,548 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 02:20:42,548 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-22 02:20:42,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-22 02:20:42,548 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 02:20:42,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-22 02:20:42,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 02:20:42 BoogieIcfgContainer [2022-07-22 02:20:42,557 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 02:20:42,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 02:20:42,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 02:20:42,558 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 02:20:42,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:20:39" (3/4) ... [2022-07-22 02:20:42,561 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 02:20:42,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 02:20:42,561 INFO L158 Benchmark]: Toolchain (without parser) took 4158.76ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 30.0MB in the beginning and 26.7MB in the end (delta: 3.3MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-07-22 02:20:42,562 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 02:20:42,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.64ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.8MB in the beginning and 55.3MB in the end (delta: -25.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-22 02:20:42,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.90ms. Allocated memory is still 71.3MB. Free memory was 55.3MB in the beginning and 53.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 02:20:42,563 INFO L158 Benchmark]: Boogie Preprocessor took 35.79ms. Allocated memory is still 71.3MB. Free memory was 53.7MB in the beginning and 52.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 02:20:42,563 INFO L158 Benchmark]: RCFGBuilder took 276.47ms. Allocated memory is still 71.3MB. Free memory was 52.6MB in the beginning and 43.8MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 02:20:42,563 INFO L158 Benchmark]: BuchiAutomizer took 3545.41ms. Allocated memory is still 71.3MB. Free memory was 43.5MB in the beginning and 27.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-22 02:20:42,564 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 71.3MB. Free memory was 27.3MB in the beginning and 26.7MB in the end (delta: 551.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 02:20:42,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.64ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.8MB in the beginning and 55.3MB in the end (delta: -25.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.90ms. Allocated memory is still 71.3MB. Free memory was 55.3MB in the beginning and 53.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.79ms. Allocated memory is still 71.3MB. Free memory was 53.7MB in the beginning and 52.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 276.47ms. Allocated memory is still 71.3MB. Free memory was 52.6MB in the beginning and 43.8MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3545.41ms. Allocated memory is still 71.3MB. Free memory was 43.5MB in the beginning and 27.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 71.3MB. Free memory was 27.3MB in the beginning and 26.7MB in the end (delta: 551.2kB). Peak memory consumption was 2.1MB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 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, 81 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 83 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp100 dnf100 smp100 tf109 neg99 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-22 02:20:42,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-07-22 02:20:42,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 02:20:43,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE