./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5fbdf5bf 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/nested9.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 b0874b2316aff3266709463f0d72702527bf3a82 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-31 02:45:35,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 02:45:35,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 02:45:35,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 02:45:35,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 02:45:35,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 02:45:35,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 02:45:35,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 02:45:35,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 02:45:35,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 02:45:35,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 02:45:35,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 02:45:35,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 02:45:35,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 02:45:35,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 02:45:35,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 02:45:35,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 02:45:35,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 02:45:35,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 02:45:35,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 02:45:35,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 02:45:35,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 02:45:35,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 02:45:35,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 02:45:35,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 02:45:35,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 02:45:35,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 02:45:35,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 02:45:35,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 02:45:35,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 02:45:35,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 02:45:35,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 02:45:35,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 02:45:35,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 02:45:35,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 02:45:35,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 02:45:35,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 02:45:35,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 02:45:35,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 02:45:35,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 02:45:35,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 02:45:35,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-31 02:45:35,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 02:45:35,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 02:45:35,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 02:45:35,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 02:45:35,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 02:45:35,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 02:45:35,853 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 02:45:35,853 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 02:45:35,854 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 02:45:35,854 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 02:45:35,855 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 02:45:35,855 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 02:45:35,855 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 02:45:35,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 02:45:35,855 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-31 02:45:35,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 02:45:35,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 02:45:35,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-31 02:45:35,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 02:45:35,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 02:45:35,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 02:45:35,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 02:45:35,857 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-31 02:45:35,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 02:45:35,857 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 02:45:35,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 02:45:35,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 02:45:35,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 02:45:35,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 02:45:35,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 02:45:35,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 02:45:35,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 02:45:35,860 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 02:45:35,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0874b2316aff3266709463f0d72702527bf3a82 [2021-08-31 02:45:36,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 02:45:36,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 02:45:36,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 02:45:36,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 02:45:36,202 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 02:45:36,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nested9.i [2021-08-31 02:45:36,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a7771983/1d7688a8f58545d9a29e307729c58c2b/FLAG935b38c70 [2021-08-31 02:45:36,767 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 02:45:36,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nested9.i [2021-08-31 02:45:36,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a7771983/1d7688a8f58545d9a29e307729c58c2b/FLAG935b38c70 [2021-08-31 02:45:37,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a7771983/1d7688a8f58545d9a29e307729c58c2b [2021-08-31 02:45:37,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 02:45:37,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 02:45:37,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 02:45:37,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 02:45:37,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 02:45:37,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cdff74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37, skipping insertion in model container [2021-08-31 02:45:37,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 02:45:37,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 02:45:37,326 WARN L228 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/nested9.i[893,906] [2021-08-31 02:45:37,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 02:45:37,357 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 02:45:37,369 WARN L228 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/nested9.i[893,906] [2021-08-31 02:45:37,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 02:45:37,401 INFO L208 MainTranslator]: Completed translation [2021-08-31 02:45:37,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37 WrapperNode [2021-08-31 02:45:37,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 02:45:37,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 02:45:37,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 02:45:37,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 02:45:37,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 02:45:37,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 02:45:37,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 02:45:37,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 02:45:37,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 02:45:37,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 02:45:37,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 02:45:37,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 02:45:37,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (1/1) ... [2021-08-31 02:45:37,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:37,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:37,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:37,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-31 02:45:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-31 02:45:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-31 02:45:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 02:45:37,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 02:45:37,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 02:45:37,685 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-31 02:45:37,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:45:37 BoogieIcfgContainer [2021-08-31 02:45:37,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 02:45:37,688 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 02:45:37,688 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 02:45:37,691 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 02:45:37,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:45:37,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 02:45:37" (1/3) ... [2021-08-31 02:45:37,693 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e83ffc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 02:45:37, skipping insertion in model container [2021-08-31 02:45:37,693 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:45:37,693 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:37" (2/3) ... [2021-08-31 02:45:37,693 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e83ffc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 02:45:37, skipping insertion in model container [2021-08-31 02:45:37,693 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:45:37,693 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:45:37" (3/3) ... [2021-08-31 02:45:37,695 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-08-31 02:45:37,731 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 02:45:37,732 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 02:45:37,732 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 02:45:37,732 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 02:45:37,732 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 02:45:37,732 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 02:45:37,733 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 02:45:37,733 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 02:45:37,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:37,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-31 02:45:37,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:37,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:37,764 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:37,765 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 02:45:37,765 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 02:45:37,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:37,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-31 02:45:37,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:37,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:37,767 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:37,767 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 02:45:37,775 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L30true assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 7#L33true assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 6#L33-1true main_~i~0 := 0; 21#L34-3true [2021-08-31 02:45:37,776 INFO L793 eck$LassoCheckResult]: Loop: 21#L34-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 12#L35-3true assume !true; 11#L34-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 21#L34-3true [2021-08-31 02:45:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:37,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-08-31 02:45:37,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:37,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036825995] [2021-08-31 02:45:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:37,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:37,876 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:37,908 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash 62625, now seen corresponding path program 1 times [2021-08-31 02:45:37,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:37,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998217267] [2021-08-31 02:45:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:37,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:37,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:37,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998217267] [2021-08-31 02:45:37,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998217267] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:45:37,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:45:37,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-31 02:45:37,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995029750] [2021-08-31 02:45:37,973 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 02:45:37,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-31 02:45:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-31 02:45:38,011 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:38,081 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-08-31 02:45:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-31 02:45:38,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2021-08-31 02:45:38,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-08-31 02:45:38,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2021-08-31 02:45:38,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-08-31 02:45:38,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-08-31 02:45:38,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-08-31 02:45:38,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 02:45:38,094 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-31 02:45:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-08-31 02:45:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-08-31 02:45:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-08-31 02:45:38,117 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-31 02:45:38,117 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-31 02:45:38,117 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 02:45:38,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-08-31 02:45:38,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-08-31 02:45:38,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:38,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:38,119 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:38,119 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 02:45:38,119 INFO L791 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 47#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 48#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 49#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 53#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 52#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 50#L33-1 main_~i~0 := 0; 51#L34-3 [2021-08-31 02:45:38,119 INFO L793 eck$LassoCheckResult]: Loop: 51#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 55#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 54#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 51#L34-3 [2021-08-31 02:45:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:38,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-08-31 02:45:38,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:38,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910677100] [2021-08-31 02:45:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:38,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:38,148 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:38,176 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:38,177 INFO L82 PathProgramCache]: Analyzing trace with hash 61788, now seen corresponding path program 1 times [2021-08-31 02:45:38,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:38,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083577630] [2021-08-31 02:45:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:38,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:38,196 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:38,202 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:38,203 INFO L82 PathProgramCache]: Analyzing trace with hash 763900016, now seen corresponding path program 1 times [2021-08-31 02:45:38,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:38,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845737406] [2021-08-31 02:45:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:38,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:38,226 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:38,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:38,343 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:38,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:38,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:38,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:38,344 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:38,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,344 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:38,344 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:38,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-08-31 02:45:38,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:38,345 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:38,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:38,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:38,421 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:38,422 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:38,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:38,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:38,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:38,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:38,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-31 02:45:38,449 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:38,449 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:38,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-08-31 02:45:38,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:38,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:38,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-31 02:45:38,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:38,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:38,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:38,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:38,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:38,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-31 02:45:38,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:38,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:38,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:38,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:38,685 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:38,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:38,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:38,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:38,685 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:38,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:38,686 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:38,686 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-08-31 02:45:38,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:38,686 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:38,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:38,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:38,727 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:38,731 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:38,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:38,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:38,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-31 02:45:38,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:38,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:38,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:38,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:38,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:38,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:38,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:38,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:38,761 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:38,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:38,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:38,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:38,807 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:38,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-31 02:45:38,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:38,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:38,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:38,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:38,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:38,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:38,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:38,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:38,836 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:38,837 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:38,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:38,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:38,844 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:38,844 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:38,844 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:38,845 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-08-31 02:45:38,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-31 02:45:38,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:38,868 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:38,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:38,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:38,961 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-31 02:45:38,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:39,062 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 02:45:39,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-08-31 02:45:39,198 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 36 states and 46 transitions. Complement of second has 8 states. [2021-08-31 02:45:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-08-31 02:45:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-08-31 02:45:39,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-31 02:45:39,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:39,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-31 02:45:39,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:39,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2021-08-31 02:45:39,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:39,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-08-31 02:45:39,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 02:45:39,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 44 transitions. [2021-08-31 02:45:39,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-08-31 02:45:39,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-08-31 02:45:39,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 44 transitions. [2021-08-31 02:45:39,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:39,213 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-08-31 02:45:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 44 transitions. [2021-08-31 02:45:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2021-08-31 02:45:39,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-08-31 02:45:39,226 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-08-31 02:45:39,226 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-08-31 02:45:39,226 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 02:45:39,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2021-08-31 02:45:39,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-31 02:45:39,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:39,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:39,230 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:39,230 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-31 02:45:39,230 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 155#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 156#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 157#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 161#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 160#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 158#L33-1 main_~i~0 := 0; 159#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-08-31 02:45:39,231 INFO L793 eck$LassoCheckResult]: Loop: 166#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 167#L36-2 assume !(main_~k~0 < main_~j~0); 171#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 176#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 162#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 163#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-08-31 02:45:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-08-31 02:45:39,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:39,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337528284] [2021-08-31 02:45:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:39,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:39,248 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:39,270 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 1 times [2021-08-31 02:45:39,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:39,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731003844] [2021-08-31 02:45:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:39,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:39,289 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:39,300 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash -696682915, now seen corresponding path program 1 times [2021-08-31 02:45:39,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:39,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493600213] [2021-08-31 02:45:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:39,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:39,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:39,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493600213] [2021-08-31 02:45:39,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493600213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:45:39,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:45:39,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-31 02:45:39,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494935627] [2021-08-31 02:45:39,437 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:39,437 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:39,437 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:39,437 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:39,437 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:39,438 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:39,438 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:39,438 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:39,438 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-08-31 02:45:39,438 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:39,438 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:39,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:39,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:39,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:39,510 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:39,510 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:39,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:39,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:39,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:39,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-31 02:45:39,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:39,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:39,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:39,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:39,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:39,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:39,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-31 02:45:39,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:39,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:39,769 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:39,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-08-31 02:45:39,775 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:39,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:39,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:39,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:39,775 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:39,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:39,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:39,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:39,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-08-31 02:45:39,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:39,775 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:39,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:39,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:39,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:39,851 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:39,851 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:39,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:39,853 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:39,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:39,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:39,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:39,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:39,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:39,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:39,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:39,873 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:39,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-31 02:45:39,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:39,898 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-31 02:45:39,898 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 02:45:39,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:39,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:39,900 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:39,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-31 02:45:39,902 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:39,902 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:39,902 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:39,903 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-31 02:45:39,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:39,926 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:39,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:39,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:39,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:39,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:40,033 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 02:45:40,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:40,111 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 02:45:40,112 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 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) [2021-08-31 02:45:40,270 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9. 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) Result 118 states and 151 transitions. Complement of second has 13 states. [2021-08-31 02:45:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2021-08-31 02:45:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2021-08-31 02:45:40,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 6 letters. [2021-08-31 02:45:40,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:40,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 14 letters. Loop has 6 letters. [2021-08-31 02:45:40,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:40,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 12 letters. [2021-08-31 02:45:40,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:40,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 151 transitions. [2021-08-31 02:45:40,288 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2021-08-31 02:45:40,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 99 states and 129 transitions. [2021-08-31 02:45:40,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-08-31 02:45:40,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-08-31 02:45:40,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 129 transitions. [2021-08-31 02:45:40,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:40,298 INFO L681 BuchiCegarLoop]: Abstraction has 99 states and 129 transitions. [2021-08-31 02:45:40,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 129 transitions. [2021-08-31 02:45:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2021-08-31 02:45:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 71 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2021-08-31 02:45:40,310 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2021-08-31 02:45:40,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-31 02:45:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-31 02:45:40,314 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-08-31 02:45:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:40,345 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-08-31 02:45:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-31 02:45:40,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2021-08-31 02:45:40,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-31 02:45:40,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 34 transitions. [2021-08-31 02:45:40,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-08-31 02:45:40,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-08-31 02:45:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 34 transitions. [2021-08-31 02:45:40,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:40,351 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-08-31 02:45:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 34 transitions. [2021-08-31 02:45:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-08-31 02:45:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-08-31 02:45:40,356 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-08-31 02:45:40,356 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-08-31 02:45:40,357 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 02:45:40,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2021-08-31 02:45:40,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-31 02:45:40,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:40,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:40,359 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:40,359 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-31 02:45:40,360 INFO L791 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 482#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 483#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 484#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 488#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 487#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 485#L33-1 main_~i~0 := 0; 486#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 495#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 496#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 507#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-08-31 02:45:40,360 INFO L793 eck$LassoCheckResult]: Loop: 493#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 494#L36-2 assume !(main_~k~0 < main_~j~0); 498#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 504#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 489#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 490#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-08-31 02:45:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:40,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 2 times [2021-08-31 02:45:40,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:40,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348609132] [2021-08-31 02:45:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:40,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:40,392 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:40,418 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:40,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:40,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 2 times [2021-08-31 02:45:40,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:40,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010798270] [2021-08-31 02:45:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:40,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:40,438 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:40,443 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:40,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:40,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1743510022, now seen corresponding path program 2 times [2021-08-31 02:45:40,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:40,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109977754] [2021-08-31 02:45:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:40,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 02:45:40,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:40,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109977754] [2021-08-31 02:45:40,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109977754] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:45:40,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:45:40,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-31 02:45:40,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931393427] [2021-08-31 02:45:40,539 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:40,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:40,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:40,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:40,539 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:40,540 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:40,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:40,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:40,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-08-31 02:45:40,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:40,540 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:40,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:40,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:40,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:40,604 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:40,604 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:40,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:40,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:40,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:40,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:40,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:40,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-31 02:45:40,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:40,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:40,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:40,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:40,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-31 02:45:40,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:40,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:40,884 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:40,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-08-31 02:45:40,888 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:40,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:40,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:40,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:40,888 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:40,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:40,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:40,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:40,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-08-31 02:45:40,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:40,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:40,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:40,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:40,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:40,959 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:40,959 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:40,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:40,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:40,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:40,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:40,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:40,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:40,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:40,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:40,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:40,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:40,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:40,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-31 02:45:41,000 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:41,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:41,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:41,028 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:41,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-31 02:45:41,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:41,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:41,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:41,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:41,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:41,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:41,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:41,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:41,043 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:41,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:41,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:41,065 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:41,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-31 02:45:41,068 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:41,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:41,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:41,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:41,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:41,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:41,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:41,078 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:41,092 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:41,096 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-31 02:45:41,096 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 02:45:41,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:41,101 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:41,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-31 02:45:41,118 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:41,118 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:41,118 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:41,118 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-08-31 02:45:41,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:41,140 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:41,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:41,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:41,234 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 02:45:41,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:41,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:41,338 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-08-31 02:45:41,338 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:41,510 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 97 states and 129 transitions. Complement of second has 16 states. [2021-08-31 02:45:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 35 transitions. [2021-08-31 02:45:41,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-31 02:45:41,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:41,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 17 letters. Loop has 6 letters. [2021-08-31 02:45:41,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:41,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 12 letters. [2021-08-31 02:45:41,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:41,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-08-31 02:45:41,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-08-31 02:45:41,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 93 states and 125 transitions. [2021-08-31 02:45:41,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-08-31 02:45:41,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-08-31 02:45:41,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 125 transitions. [2021-08-31 02:45:41,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:41,524 INFO L681 BuchiCegarLoop]: Abstraction has 93 states and 125 transitions. [2021-08-31 02:45:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states and 125 transitions. [2021-08-31 02:45:41,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-08-31 02:45:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 62 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2021-08-31 02:45:41,531 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 86 transitions. [2021-08-31 02:45:41,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-31 02:45:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-31 02:45:41,535 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:41,566 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-08-31 02:45:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-31 02:45:41,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 63 transitions. [2021-08-31 02:45:41,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-08-31 02:45:41,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 29 states and 35 transitions. [2021-08-31 02:45:41,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-08-31 02:45:41,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-31 02:45:41,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2021-08-31 02:45:41,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:41,569 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-31 02:45:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2021-08-31 02:45:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-31 02:45:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-08-31 02:45:41,571 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-31 02:45:41,571 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-31 02:45:41,571 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-31 02:45:41,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-08-31 02:45:41,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-08-31 02:45:41,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:41,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:41,573 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:41,573 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:41,573 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 822#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 819#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 820#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 826#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 825#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 823#L33-1 main_~i~0 := 0; 824#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 833#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 834#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 847#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-08-31 02:45:41,573 INFO L793 eck$LassoCheckResult]: Loop: 831#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 832#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 835#L18 assume !(0 == __VERIFIER_assert_~cond); 838#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 840#L36-2 assume !(main_~k~0 < main_~j~0); 842#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 843#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 827#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 828#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-08-31 02:45:41,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:41,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 3 times [2021-08-31 02:45:41,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:41,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330770807] [2021-08-31 02:45:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:41,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:41,582 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:41,592 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:41,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1576881701, now seen corresponding path program 1 times [2021-08-31 02:45:41,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:41,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12208921] [2021-08-31 02:45:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:41,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:41,608 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:41,614 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:41,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:41,615 INFO L82 PathProgramCache]: Analyzing trace with hash -604215978, now seen corresponding path program 1 times [2021-08-31 02:45:41,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:41,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534043099] [2021-08-31 02:45:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:41,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:41,625 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:41,638 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:41,734 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:41,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:41,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:41,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:41,734 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:41,734 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,734 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:41,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:41,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-08-31 02:45:41,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:41,735 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:41,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:41,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:41,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:41,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:41,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:41,831 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:41,831 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:41,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:41,833 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:41,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:41,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:41,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-31 02:45:41,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:41,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:41,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:41,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:41,877 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:41,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-31 02:45:41,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:41,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:41,896 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:41,896 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:41,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-08-31 02:45:41,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:41,916 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:41,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-31 02:45:41,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:41,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:41,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:41,926 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:41,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:41,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:41,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:41,945 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:41,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-31 02:45:41,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:41,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:42,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:42,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:42,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:42,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:42,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:42,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:42,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-31 02:45:42,293 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:42,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:42,298 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:42,298 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:42,298 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:42,298 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:42,298 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:42,298 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:42,298 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:42,298 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:42,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-08-31 02:45:42,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:42,299 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:42,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:42,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:42,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:42,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:42,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:42,425 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:42,425 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:42,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:42,427 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:42,439 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:42,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:42,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:42,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:42,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:42,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:42,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:42,453 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:42,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-31 02:45:42,464 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:42,469 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:42,469 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:42,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:42,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:42,470 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:42,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-31 02:45:42,474 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:42,474 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:42,474 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:42,474 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2021-08-31 02:45:42,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:42,504 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:42,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:42,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:42,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 02:45:42,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:42,698 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-08-31 02:45:42,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-08-31 02:45:42,854 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) Result 117 states and 146 transitions. Complement of second has 18 states. [2021-08-31 02:45:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2021-08-31 02:45:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2021-08-31 02:45:42,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 9 letters. [2021-08-31 02:45:42,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:42,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 20 letters. Loop has 9 letters. [2021-08-31 02:45:42,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:42,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 18 letters. [2021-08-31 02:45:42,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:42,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 146 transitions. [2021-08-31 02:45:42,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-08-31 02:45:42,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 115 states and 144 transitions. [2021-08-31 02:45:42,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-08-31 02:45:42,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-08-31 02:45:42,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2021-08-31 02:45:42,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:42,859 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2021-08-31 02:45:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2021-08-31 02:45:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2021-08-31 02:45:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 72 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2021-08-31 02:45:42,864 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-08-31 02:45:42,864 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-08-31 02:45:42,864 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-31 02:45:42,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 94 transitions. [2021-08-31 02:45:42,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-08-31 02:45:42,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:42,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:42,865 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:42,866 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-31 02:45:42,866 INFO L791 eck$LassoCheckResult]: Stem: 1075#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1076#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1077#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1078#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1082#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1081#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1079#L33-1 main_~i~0 := 0; 1080#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1115#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1127#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1129#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1103#L35-3 [2021-08-31 02:45:42,866 INFO L793 eck$LassoCheckResult]: Loop: 1103#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1091#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1092#L18 assume !(0 == __VERIFIER_assert_~cond); 1110#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1109#L36-2 assume !(main_~k~0 < main_~j~0); 1102#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1103#L35-3 [2021-08-31 02:45:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:42,866 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 4 times [2021-08-31 02:45:42,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:42,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485023921] [2021-08-31 02:45:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:42,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:42,898 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:42,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:42,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2078695422, now seen corresponding path program 1 times [2021-08-31 02:45:42,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:42,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735965157] [2021-08-31 02:45:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:42,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:42,914 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:42,919 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:42,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1741881747, now seen corresponding path program 2 times [2021-08-31 02:45:42,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:42,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397660289] [2021-08-31 02:45:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:42,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:42,928 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:42,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:42,948 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:43,010 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:43,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:43,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:43,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:43,010 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:43,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:43,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:43,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:43,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-08-31 02:45:43,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:43,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:43,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,079 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:43,080 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:43,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:43,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:43,086 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:43,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-31 02:45:43,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:43,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:43,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:43,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:43,141 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:43,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-31 02:45:43,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:43,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:43,593 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:43,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-08-31 02:45:43,598 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:43,598 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:43,598 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:43,598 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:43,598 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:43,598 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:43,598 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:43,598 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:43,599 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-08-31 02:45:43,599 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:43,599 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:43,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:43,660 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:43,661 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:43,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:43,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:43,662 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:43,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-31 02:45:43,664 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:43,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:43,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:43,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:43,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:43,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:43,672 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:43,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:43,681 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:43,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:43,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:43,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:43,709 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:43,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-31 02:45:43,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:43,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:43,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:43,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:43,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:43,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:43,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:43,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:43,752 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:43,757 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-31 02:45:43,757 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 02:45:43,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:43,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:43,761 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:43,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-31 02:45:43,763 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:43,763 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:43,763 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:43,764 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 5*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-31 02:45:43,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:43,792 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:43,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:43,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:43,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:43,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-31 02:45:43,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:43,919 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 02:45:43,919 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:43,946 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 77 states and 98 transitions. Complement of second has 5 states. [2021-08-31 02:45:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-08-31 02:45:43,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-31 02:45:43,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:43,949 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:43,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:43,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:44,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-31 02:45:44,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:44,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:44,093 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 02:45:44,094 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:44,112 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 77 states and 98 transitions. Complement of second has 5 states. [2021-08-31 02:45:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-08-31 02:45:44,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-31 02:45:44,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:44,115 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:44,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:44,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-31 02:45:44,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:44,227 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 4 loop predicates [2021-08-31 02:45:44,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:44,294 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 156 states and 196 transitions. Complement of second has 10 states. [2021-08-31 02:45:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-08-31 02:45:44,296 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-31 02:45:44,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:44,296 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 17 letters. Loop has 6 letters. [2021-08-31 02:45:44,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:44,296 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 12 letters. [2021-08-31 02:45:44,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:44,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2021-08-31 02:45:44,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-08-31 02:45:44,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 142 states and 180 transitions. [2021-08-31 02:45:44,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-08-31 02:45:44,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-08-31 02:45:44,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 180 transitions. [2021-08-31 02:45:44,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:44,300 INFO L681 BuchiCegarLoop]: Abstraction has 142 states and 180 transitions. [2021-08-31 02:45:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 180 transitions. [2021-08-31 02:45:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2021-08-31 02:45:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2021-08-31 02:45:44,306 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-08-31 02:45:44,306 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-08-31 02:45:44,306 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-31 02:45:44,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2021-08-31 02:45:44,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-08-31 02:45:44,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:44,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:44,308 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:44,308 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:44,308 INFO L791 eck$LassoCheckResult]: Stem: 1659#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1660#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1661#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1662#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1666#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1665#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1663#L33-1 main_~i~0 := 0; 1664#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1689#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1713#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1714#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-08-31 02:45:44,308 INFO L793 eck$LassoCheckResult]: Loop: 1695#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1692#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1696#L18 assume !(0 == __VERIFIER_assert_~cond); 1682#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1676#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1677#L18 assume !(0 == __VERIFIER_assert_~cond); 1679#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1693#L36-2 assume !(main_~k~0 < main_~j~0); 1685#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1686#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1667#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1668#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-08-31 02:45:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:44,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 5 times [2021-08-31 02:45:44,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:44,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455082925] [2021-08-31 02:45:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:44,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:44,315 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:44,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:44,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash -206190261, now seen corresponding path program 2 times [2021-08-31 02:45:44,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:44,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862957222] [2021-08-31 02:45:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:44,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:44,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:44,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862957222] [2021-08-31 02:45:44,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862957222] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 02:45:44,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546132101] [2021-08-31 02:45:44,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-31 02:45:44,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 02:45:44,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:44,397 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 02:45:44,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-31 02:45:44,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-31 02:45:44,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 02:45:44,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-31 02:45:44,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:44,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 02:45:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:44,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546132101] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 02:45:44,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 02:45:44,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-08-31 02:45:44,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199689429] [2021-08-31 02:45:44,712 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 02:45:44,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-31 02:45:44,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-31 02:45:44,713 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 38 Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:45,219 INFO L93 Difference]: Finished difference Result 358 states and 448 transitions. [2021-08-31 02:45:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-31 02:45:45,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 358 states and 448 transitions. [2021-08-31 02:45:45,222 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 85 [2021-08-31 02:45:45,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 358 states to 358 states and 448 transitions. [2021-08-31 02:45:45,225 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-08-31 02:45:45,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2021-08-31 02:45:45,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 358 states and 448 transitions. [2021-08-31 02:45:45,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:45,226 INFO L681 BuchiCegarLoop]: Abstraction has 358 states and 448 transitions. [2021-08-31 02:45:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states and 448 transitions. [2021-08-31 02:45:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 190. [2021-08-31 02:45:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 190 states have (on average 1.263157894736842) internal successors, (240), 189 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 240 transitions. [2021-08-31 02:45:45,234 INFO L704 BuchiCegarLoop]: Abstraction has 190 states and 240 transitions. [2021-08-31 02:45:45,234 INFO L587 BuchiCegarLoop]: Abstraction has 190 states and 240 transitions. [2021-08-31 02:45:45,234 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-08-31 02:45:45,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 190 states and 240 transitions. [2021-08-31 02:45:45,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-08-31 02:45:45,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:45,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:45,236 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:45,236 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:45,236 INFO L791 eck$LassoCheckResult]: Stem: 2252#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 2253#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 2254#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2255#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2259#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2258#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2256#L33-1 main_~i~0 := 0; 2257#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2279#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2287#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2288#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2286#L35-3 [2021-08-31 02:45:45,236 INFO L793 eck$LassoCheckResult]: Loop: 2286#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 2265#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2268#L18 assume !(0 == __VERIFIER_assert_~cond); 2364#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2343#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2344#L18 assume !(0 == __VERIFIER_assert_~cond); 2336#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2337#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2359#L18 assume !(0 == __VERIFIER_assert_~cond); 2357#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2345#L36-2 assume !(main_~k~0 < main_~j~0); 2283#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 2282#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2260#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2261#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2286#L35-3 [2021-08-31 02:45:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:45,237 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 6 times [2021-08-31 02:45:45,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:45,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540647729] [2021-08-31 02:45:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:45,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:45,243 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:45,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:45,250 INFO L82 PathProgramCache]: Analyzing trace with hash 452506725, now seen corresponding path program 3 times [2021-08-31 02:45:45,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:45,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79880040] [2021-08-31 02:45:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:45,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:45,256 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:45,262 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1390681386, now seen corresponding path program 3 times [2021-08-31 02:45:45,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:45,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847858242] [2021-08-31 02:45:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:45,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-31 02:45:45,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:45,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847858242] [2021-08-31 02:45:45,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847858242] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 02:45:45,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757061153] [2021-08-31 02:45:45,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-31 02:45:45,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 02:45:45,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:45,302 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 02:45:45,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-31 02:45:45,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-31 02:45:45,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 02:45:45,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-31 02:45:45,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:45,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 02:45:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:45,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757061153] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 02:45:45,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 02:45:45,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2021-08-31 02:45:45,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043908970] [2021-08-31 02:45:45,714 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:45,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:45,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:45,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:45,715 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:45,715 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:45,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:45,715 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:45,715 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-08-31 02:45:45,715 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:45,715 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:45,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:45,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:45,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:45,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:45,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:45,804 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:45,805 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:45,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:45,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:45,813 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:45,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-08-31 02:45:45,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:45,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:45,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:45,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:45,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:45,868 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:45,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-08-31 02:45:45,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:45,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:46,098 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:46,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-08-31 02:45:46,103 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:46,103 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:46,103 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:46,103 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:46,103 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:46,103 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:46,103 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:46,103 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:46,103 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-08-31 02:45:46,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:46,103 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:46,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:46,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:46,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:46,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:46,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:46,199 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:46,199 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:46,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:46,200 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:46,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-08-31 02:45:46,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:46,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:46,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:46,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:46,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:46,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:46,211 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:46,211 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:46,222 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:46,242 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:46,242 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:46,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:46,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:46,244 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:46,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-08-31 02:45:46,246 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:46,246 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:46,246 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:46,246 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2021-08-31 02:45:46,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:46,267 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:46,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:46,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:46,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-31 02:45:46,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:46,490 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-08-31 02:45:46,490 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 190 states and 240 transitions. cyclomatic complexity: 54 Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:46,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:46,822 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 190 states and 240 transitions. cyclomatic complexity: 54. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 728 states and 912 transitions. Complement of second has 32 states. [2021-08-31 02:45:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 1 stem states 15 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 62 transitions. [2021-08-31 02:45:46,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 15 letters. [2021-08-31 02:45:46,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:46,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 26 letters. Loop has 15 letters. [2021-08-31 02:45:46,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:46,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 30 letters. [2021-08-31 02:45:46,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:46,826 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 728 states and 912 transitions. [2021-08-31 02:45:46,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 86 [2021-08-31 02:45:46,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 728 states to 546 states and 683 transitions. [2021-08-31 02:45:46,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-08-31 02:45:46,836 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55 [2021-08-31 02:45:46,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 546 states and 683 transitions. [2021-08-31 02:45:46,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:46,840 INFO L681 BuchiCegarLoop]: Abstraction has 546 states and 683 transitions. [2021-08-31 02:45:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states and 683 transitions. [2021-08-31 02:45:46,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 286. [2021-08-31 02:45:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 286 states have (on average 1.2762237762237763) internal successors, (365), 285 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 365 transitions. [2021-08-31 02:45:46,856 INFO L704 BuchiCegarLoop]: Abstraction has 286 states and 365 transitions. [2021-08-31 02:45:46,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-31 02:45:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-08-31 02:45:46,858 INFO L87 Difference]: Start difference. First operand 286 states and 365 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:47,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:47,100 INFO L93 Difference]: Finished difference Result 738 states and 916 transitions. [2021-08-31 02:45:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-31 02:45:47,101 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 738 states and 916 transitions. [2021-08-31 02:45:47,106 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 63 [2021-08-31 02:45:47,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 738 states to 680 states and 846 transitions. [2021-08-31 02:45:47,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-08-31 02:45:47,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2021-08-31 02:45:47,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 680 states and 846 transitions. [2021-08-31 02:45:47,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:47,111 INFO L681 BuchiCegarLoop]: Abstraction has 680 states and 846 transitions. [2021-08-31 02:45:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states and 846 transitions. [2021-08-31 02:45:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 405. [2021-08-31 02:45:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 405 states have (on average 1.2617283950617284) internal successors, (511), 404 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 511 transitions. [2021-08-31 02:45:47,119 INFO L704 BuchiCegarLoop]: Abstraction has 405 states and 511 transitions. [2021-08-31 02:45:47,119 INFO L587 BuchiCegarLoop]: Abstraction has 405 states and 511 transitions. [2021-08-31 02:45:47,119 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-08-31 02:45:47,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 405 states and 511 transitions. [2021-08-31 02:45:47,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-08-31 02:45:47,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:47,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:47,123 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:47,123 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1] [2021-08-31 02:45:47,123 INFO L791 eck$LassoCheckResult]: Stem: 4541#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 4542#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 4543#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 4544#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 4548#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 4547#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 4545#L33-1 main_~i~0 := 0; 4546#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4626#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 4625#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 4623#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4621#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4607#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4618#L18 assume !(0 == __VERIFIER_assert_~cond); 4616#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 4613#L36-2 assume !(main_~k~0 < main_~j~0); 4611#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 4606#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 4603#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 4599#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4596#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4595#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4656#L18 assume !(0 == __VERIFIER_assert_~cond); 4655#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 4638#L36-2 assume !(main_~k~0 < main_~j~0); 4630#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 4627#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4558#L36-2 [2021-08-31 02:45:47,123 INFO L793 eck$LassoCheckResult]: Loop: 4558#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4559#L18 assume !(0 == __VERIFIER_assert_~cond); 4589#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 4588#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4587#L18 assume !(0 == __VERIFIER_assert_~cond); 4586#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 4585#L36-2 assume !(main_~k~0 < main_~j~0); 4568#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 4569#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 4558#L36-2 [2021-08-31 02:45:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:47,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1172406517, now seen corresponding path program 4 times [2021-08-31 02:45:47,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:47,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311604061] [2021-08-31 02:45:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:47,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-31 02:45:47,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:47,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311604061] [2021-08-31 02:45:47,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311604061] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 02:45:47,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890442719] [2021-08-31 02:45:47,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-31 02:45:47,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 02:45:47,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:47,197 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 02:45:47,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-08-31 02:45:47,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-31 02:45:47,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 02:45:47,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-31 02:45:47,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-31 02:45:47,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 02:45:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-31 02:45:47,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890442719] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 02:45:47,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 02:45:47,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-08-31 02:45:47,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860649810] [2021-08-31 02:45:47,435 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 02:45:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:47,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1734754794, now seen corresponding path program 2 times [2021-08-31 02:45:47,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:47,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834833278] [2021-08-31 02:45:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:47,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:47,444 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:47,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:47,550 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:47,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:47,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:47,551 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:47,551 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:47,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:47,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:47,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:47,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-08-31 02:45:47,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:47,551 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:47,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:47,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:47,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:47,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:47,607 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:47,608 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:47,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:47,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:47,609 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:47,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-08-31 02:45:47,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:47,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:47,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:47,624 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:47,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-08-31 02:45:47,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:47,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:47,644 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:47,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-08-31 02:45:47,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:47,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:47,653 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:47,653 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:47,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-08-31 02:45:47,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:47,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:47,673 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:47,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-08-31 02:45:47,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:47,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:47,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:47,691 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:47,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:47,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:47,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:47,710 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:47,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-08-31 02:45:47,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:47,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:47,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-08-31 02:45:47,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:47,745 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:47,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-08-31 02:45:47,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:47,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:48,113 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:48,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-08-31 02:45:48,118 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:48,119 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:48,119 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:48,119 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:48,119 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:48,119 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:48,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:48,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:48,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-08-31 02:45:48,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:48,119 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:48,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:48,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:48,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:48,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:48,190 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:48,190 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:48,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:48,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:48,192 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:48,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-08-31 02:45:48,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:48,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:48,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:48,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:48,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:48,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:48,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:48,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:48,216 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:48,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:48,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:48,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:48,241 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:48,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-08-31 02:45:48,243 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:48,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:48,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:48,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:48,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:48,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:48,253 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:48,253 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:48,264 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:48,267 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:48,267 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:48,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:48,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:48,269 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:48,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-08-31 02:45:48,271 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:48,271 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:48,271 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:48,272 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 3*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-31 02:45:48,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:48,291 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:48,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:48,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:48,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:48,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:48,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-31 02:45:48,429 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 02:45:48,429 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 405 states and 511 transitions. cyclomatic complexity: 118 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-31 02:45:48,464 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 405 states and 511 transitions. cyclomatic complexity: 118. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) Result 417 states and 523 transitions. Complement of second has 7 states. [2021-08-31 02:45:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-31 02:45:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-31 02:45:48,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 27 letters. Loop has 9 letters. [2021-08-31 02:45:48,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:48,466 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:48,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:48,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:48,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:48,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:48,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-31 02:45:48,610 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 02:45:48,610 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 405 states and 511 transitions. cyclomatic complexity: 118 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-31 02:45:48,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:48,661 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 405 states and 511 transitions. cyclomatic complexity: 118. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) Result 417 states and 523 transitions. Complement of second has 7 states. [2021-08-31 02:45:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-31 02:45:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-31 02:45:48,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 27 letters. Loop has 9 letters. [2021-08-31 02:45:48,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:48,663 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:48,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:48,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:48,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:48,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-31 02:45:48,780 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 02:45:48,780 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 405 states and 511 transitions. cyclomatic complexity: 118 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-31 02:45:48,814 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 405 states and 511 transitions. cyclomatic complexity: 118. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) Result 728 states and 883 transitions. Complement of second has 6 states. [2021-08-31 02:45:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-08-31 02:45:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-08-31 02:45:48,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 27 letters. Loop has 9 letters. [2021-08-31 02:45:48,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:48,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 36 letters. Loop has 9 letters. [2021-08-31 02:45:48,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:48,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 27 letters. Loop has 18 letters. [2021-08-31 02:45:48,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:48,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 728 states and 883 transitions. [2021-08-31 02:45:48,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2021-08-31 02:45:48,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 728 states to 540 states and 659 transitions. [2021-08-31 02:45:48,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-08-31 02:45:48,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-08-31 02:45:48,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 540 states and 659 transitions. [2021-08-31 02:45:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:48,824 INFO L681 BuchiCegarLoop]: Abstraction has 540 states and 659 transitions. [2021-08-31 02:45:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states and 659 transitions. [2021-08-31 02:45:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 461. [2021-08-31 02:45:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 461 states have (on average 1.2125813449023861) internal successors, (559), 460 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 559 transitions. [2021-08-31 02:45:48,832 INFO L704 BuchiCegarLoop]: Abstraction has 461 states and 559 transitions. [2021-08-31 02:45:48,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-31 02:45:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-31 02:45:48,833 INFO L87 Difference]: Start difference. First operand 461 states and 559 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:48,960 INFO L93 Difference]: Finished difference Result 475 states and 552 transitions. [2021-08-31 02:45:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-31 02:45:48,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 475 states and 552 transitions. [2021-08-31 02:45:48,964 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-08-31 02:45:48,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 475 states to 216 states and 246 transitions. [2021-08-31 02:45:48,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-08-31 02:45:48,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-08-31 02:45:48,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 216 states and 246 transitions. [2021-08-31 02:45:48,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:48,965 INFO L681 BuchiCegarLoop]: Abstraction has 216 states and 246 transitions. [2021-08-31 02:45:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states and 246 transitions. [2021-08-31 02:45:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 204. [2021-08-31 02:45:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 204 states have (on average 1.1470588235294117) internal successors, (234), 203 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 234 transitions. [2021-08-31 02:45:48,968 INFO L704 BuchiCegarLoop]: Abstraction has 204 states and 234 transitions. [2021-08-31 02:45:48,968 INFO L587 BuchiCegarLoop]: Abstraction has 204 states and 234 transitions. [2021-08-31 02:45:48,969 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-08-31 02:45:48,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 204 states and 234 transitions. [2021-08-31 02:45:48,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2021-08-31 02:45:48,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:48,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:48,970 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:48,970 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:48,970 INFO L791 eck$LassoCheckResult]: Stem: 7983#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 7984#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 7985#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 7986#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 7990#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 7989#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 7987#L33-1 main_~i~0 := 0; 7988#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8012#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8069#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8064#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8061#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8057#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8055#L18 assume !(0 == __VERIFIER_assert_~cond); 8053#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8051#L36-2 assume !(main_~k~0 < main_~j~0); 8047#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8048#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8049#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8033#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8030#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 7998#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 7999#L18 assume !(0 == __VERIFIER_assert_~cond); 8182#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8181#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8180#L18 assume !(0 == __VERIFIER_assert_~cond); 8179#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8032#L36-2 assume !(main_~k~0 < main_~j~0); 8031#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8029#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8025#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8002#L18 [2021-08-31 02:45:48,971 INFO L793 eck$LassoCheckResult]: Loop: 8002#L18 assume !(0 == __VERIFIER_assert_~cond); 8003#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8006#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8024#L18 assume !(0 == __VERIFIER_assert_~cond); 8023#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8022#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8021#L18 assume !(0 == __VERIFIER_assert_~cond); 8020#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8019#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8018#L18 assume !(0 == __VERIFIER_assert_~cond); 8017#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8016#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8014#L18 assume !(0 == __VERIFIER_assert_~cond); 8015#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8013#L36-2 assume !(main_~k~0 < main_~j~0); 8008#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8009#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 7991#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 7992#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8028#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8027#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8002#L18 [2021-08-31 02:45:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:48,971 INFO L82 PathProgramCache]: Analyzing trace with hash -471512789, now seen corresponding path program 5 times [2021-08-31 02:45:48,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:48,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404948377] [2021-08-31 02:45:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:48,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:48,980 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:48,990 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:48,990 INFO L82 PathProgramCache]: Analyzing trace with hash -526412235, now seen corresponding path program 4 times [2021-08-31 02:45:48,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:48,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788792019] [2021-08-31 02:45:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:48,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:48,997 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:49,004 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash 33721163, now seen corresponding path program 6 times [2021-08-31 02:45:49,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:49,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099038926] [2021-08-31 02:45:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:49,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 73 proven. 73 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-31 02:45:49,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:49,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099038926] [2021-08-31 02:45:49,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099038926] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 02:45:49,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091281808] [2021-08-31 02:45:49,084 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-31 02:45:49,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 02:45:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:49,089 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 02:45:49,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-08-31 02:45:49,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-31 02:45:49,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 02:45:49,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-31 02:45:49,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 80 proven. 61 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-31 02:45:49,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 02:45:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 80 proven. 61 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-31 02:45:49,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091281808] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 02:45:49,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 02:45:49,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 17 [2021-08-31 02:45:49,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474085064] [2021-08-31 02:45:49,674 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:49,674 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:49,674 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:49,674 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:49,674 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:49,674 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:49,674 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:49,674 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:49,674 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-08-31 02:45:49,674 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:49,674 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:49,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:49,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:49,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:49,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:49,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:49,773 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:49,774 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:49,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:49,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:49,775 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:49,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-08-31 02:45:49,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:49,777 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:49,785 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:49,785 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:49,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:49,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:49,804 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:49,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-08-31 02:45:49,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:49,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:49,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:49,822 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:49,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:49,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:49,840 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:49,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-08-31 02:45:49,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:49,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:49,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:49,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:49,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:49,869 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:49,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-08-31 02:45:49,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:49,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:50,358 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:50,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-08-31 02:45:50,364 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:50,364 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:50,364 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:50,364 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:50,364 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:50,364 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:50,364 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:50,364 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:50,364 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-08-31 02:45:50,364 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:50,365 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:50,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:50,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:50,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:50,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:50,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:50,456 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:50,456 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:50,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:50,457 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:50,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-08-31 02:45:50,459 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:50,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:50,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:50,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:50,465 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-31 02:45:50,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:50,467 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-31 02:45:50,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:50,469 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:50,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-08-31 02:45:50,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:50,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:50,487 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:50,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-08-31 02:45:50,489 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:50,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:50,496 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:50,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:50,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:50,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:50,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:50,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:50,500 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:50,503 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-31 02:45:50,503 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 02:45:50,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:50,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:50,505 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:50,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-08-31 02:45:50,508 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:50,508 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:50,509 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:50,509 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-08-31 02:45:50,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:50,526 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:50,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:50,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:50,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-31 02:45:50,750 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 02:45:50,750 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 204 states and 234 transitions. cyclomatic complexity: 38 Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:50,782 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 204 states and 234 transitions. cyclomatic complexity: 38. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 438 states and 501 transitions. Complement of second has 6 states. [2021-08-31 02:45:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2021-08-31 02:45:50,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 21 letters. [2021-08-31 02:45:50,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:50,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 52 letters. Loop has 21 letters. [2021-08-31 02:45:50,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:50,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 42 letters. [2021-08-31 02:45:50,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:50,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 438 states and 501 transitions. [2021-08-31 02:45:50,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 02:45:50,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 438 states to 285 states and 328 transitions. [2021-08-31 02:45:50,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-08-31 02:45:50,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-08-31 02:45:50,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 328 transitions. [2021-08-31 02:45:50,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:50,789 INFO L681 BuchiCegarLoop]: Abstraction has 285 states and 328 transitions. [2021-08-31 02:45:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 328 transitions. [2021-08-31 02:45:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 262. [2021-08-31 02:45:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 262 states have (on average 1.1488549618320612) internal successors, (301), 261 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 301 transitions. [2021-08-31 02:45:50,793 INFO L704 BuchiCegarLoop]: Abstraction has 262 states and 301 transitions. [2021-08-31 02:45:50,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:50,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-31 02:45:50,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-08-31 02:45:50,794 INFO L87 Difference]: Start difference. First operand 262 states and 301 transitions. Second operand has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:51,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:51,192 INFO L93 Difference]: Finished difference Result 418 states and 466 transitions. [2021-08-31 02:45:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-31 02:45:51,195 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 418 states and 466 transitions. [2021-08-31 02:45:51,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 02:45:51,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 418 states to 321 states and 361 transitions. [2021-08-31 02:45:51,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-08-31 02:45:51,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-08-31 02:45:51,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 321 states and 361 transitions. [2021-08-31 02:45:51,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:51,200 INFO L681 BuchiCegarLoop]: Abstraction has 321 states and 361 transitions. [2021-08-31 02:45:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states and 361 transitions. [2021-08-31 02:45:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 291. [2021-08-31 02:45:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 291 states have (on average 1.1374570446735395) internal successors, (331), 290 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 331 transitions. [2021-08-31 02:45:51,205 INFO L704 BuchiCegarLoop]: Abstraction has 291 states and 331 transitions. [2021-08-31 02:45:51,206 INFO L587 BuchiCegarLoop]: Abstraction has 291 states and 331 transitions. [2021-08-31 02:45:51,206 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-08-31 02:45:51,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 291 states and 331 transitions. [2021-08-31 02:45:51,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 02:45:51,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:51,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:51,208 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:51,208 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 02:45:51,209 INFO L791 eck$LassoCheckResult]: Stem: 9840#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 9841#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 9842#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 9843#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 9847#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 9846#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 9844#L33-1 main_~i~0 := 0; 9845#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9865#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 9920#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 9886#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9888#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 10029#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 10028#L18 assume !(0 == __VERIFIER_assert_~cond); 10027#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 10006#L36-2 assume !(main_~k~0 < main_~j~0); 10007#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 10096#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 10095#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 10094#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9852#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 9853#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 10127#L18 assume !(0 == __VERIFIER_assert_~cond); 10126#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 10120#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 10119#L18 assume !(0 == __VERIFIER_assert_~cond); 10117#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 10115#L36-2 assume !(main_~k~0 < main_~j~0); 9863#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 9864#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 10083#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 10082#L18 assume !(0 == __VERIFIER_assert_~cond); 10081#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 10080#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 10079#L18 assume !(0 == __VERIFIER_assert_~cond); 10078#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 10077#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 10076#L18 assume !(0 == __VERIFIER_assert_~cond); 10075#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 9900#L36-2 assume !(main_~k~0 < main_~j~0); 9896#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 9889#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 9890#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 9873#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 9870#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 9868#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 9855#L18 [2021-08-31 02:45:51,209 INFO L793 eck$LassoCheckResult]: Loop: 9855#L18 assume !(0 == __VERIFIER_assert_~cond); 9858#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 9854#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 9855#L18 [2021-08-31 02:45:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:51,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1181148043, now seen corresponding path program 7 times [2021-08-31 02:45:51,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:51,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017661917] [2021-08-31 02:45:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:51,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:51,222 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:51,237 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:51,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:51,238 INFO L82 PathProgramCache]: Analyzing trace with hash 84523, now seen corresponding path program 1 times [2021-08-31 02:45:51,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:51,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93189355] [2021-08-31 02:45:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:51,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:51,241 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:51,244 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:51,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1085652383, now seen corresponding path program 8 times [2021-08-31 02:45:51,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:51,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423278584] [2021-08-31 02:45:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:51,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:51,256 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:51,272 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:51,304 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:51,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:51,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:51,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:51,304 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:51,304 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:51,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:51,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:51,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-08-31 02:45:51,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:51,305 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:51,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:51,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:51,477 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:51,478 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:51,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:51,481 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:51,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-08-31 02:45:51,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:51,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:51,493 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:51,493 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:51,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-08-31 02:45:51,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:51,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:51,513 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:51,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-08-31 02:45:51,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:51,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:51,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:51,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:51,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:51,554 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:51,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-08-31 02:45:51,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:51,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:52,597 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:52,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-08-31 02:45:52,603 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:52,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:52,603 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:52,603 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:52,603 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:52,603 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:52,603 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:52,603 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:52,603 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-08-31 02:45:52,603 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:52,604 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:52,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:52,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:45:52,796 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:52,796 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:52,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:52,798 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:52,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-08-31 02:45:52,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:52,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:52,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:52,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:52,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:52,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:52,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:52,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:52,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:52,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-08-31 02:45:52,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:52,829 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:52,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-08-31 02:45:52,831 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:45:52,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:52,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:52,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:52,838 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-08-31 02:45:52,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:52,842 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-08-31 02:45:52,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:52,848 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:52,856 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:52,856 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:52,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:52,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:52,857 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:45:52,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-08-31 02:45:52,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:52,859 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:52,859 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:52,859 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-31 02:45:52,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:52,885 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:52,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:52,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:52,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:52,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:53,002 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 02:45:53,003 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 291 states and 331 transitions. cyclomatic complexity: 53 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-08-31 02:45:53,032 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 291 states and 331 transitions. cyclomatic complexity: 53. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) Result 338 states and 380 transitions. Complement of second has 7 states. [2021-08-31 02:45:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-08-31 02:45:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-31 02:45:53,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 3 letters. [2021-08-31 02:45:53,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:53,033 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:53,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:53,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:53,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:53,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:53,182 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 02:45:53,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 291 states and 331 transitions. cyclomatic complexity: 53 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-08-31 02:45:53,210 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 291 states and 331 transitions. cyclomatic complexity: 53. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) Result 338 states and 380 transitions. Complement of second has 7 states. [2021-08-31 02:45:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-08-31 02:45:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-31 02:45:53,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 3 letters. [2021-08-31 02:45:53,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:53,211 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:53,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:53,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:53,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:53,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:45:53,343 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 02:45:53,343 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 291 states and 331 transitions. cyclomatic complexity: 53 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-08-31 02:45:53,390 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 291 states and 331 transitions. cyclomatic complexity: 53. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) Result 483 states and 530 transitions. Complement of second has 6 states. [2021-08-31 02:45:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:45:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-08-31 02:45:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2021-08-31 02:45:53,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 46 letters. Loop has 3 letters. [2021-08-31 02:45:53,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:53,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 49 letters. Loop has 3 letters. [2021-08-31 02:45:53,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:53,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 46 letters. Loop has 6 letters. [2021-08-31 02:45:53,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:53,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 483 states and 530 transitions. [2021-08-31 02:45:53,396 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 02:45:53,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 483 states to 0 states and 0 transitions. [2021-08-31 02:45:53,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 02:45:53,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 02:45:53,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 02:45:53,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 02:45:53,397 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:53,397 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:53,397 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:53,397 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-08-31 02:45:53,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-31 02:45:53,397 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 02:45:53,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-31 02:45:53,400 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) at de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData.toString(StatisticsData.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerTimingBenchmark.toString(BuchiAutomizerTimingBenchmark.java:44) at de.uni_freiburg.informatik.ultimate.core.lib.results.StatisticsResult.getLongDescription(StatisticsResult.java:58) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.reportResult(BuchiAutomizerObserver.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-31 02:45:53,406 INFO L158 Benchmark]: Toolchain (without parser) took 16239.79ms. Allocated memory was 56.6MB in the beginning and 125.8MB in the end (delta: 69.2MB). Free memory was 35.4MB in the beginning and 45.5MB in the end (delta: -10.1MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2021-08-31 02:45:53,406 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 02:45:53,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.47ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 25.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-31 02:45:53,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.30ms. Allocated memory is still 56.6MB. Free memory was 25.4MB in the beginning and 23.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-31 02:45:53,407 INFO L158 Benchmark]: Boogie Preprocessor took 46.16ms. Allocated memory is still 56.6MB. Free memory was 23.9MB in the beginning and 40.6MB in the end (delta: -16.7MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-08-31 02:45:53,409 INFO L158 Benchmark]: RCFGBuilder took 201.00ms. Allocated memory is still 56.6MB. Free memory was 40.6MB in the beginning and 32.1MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 02:45:53,410 INFO L158 Benchmark]: BuchiAutomizer took 15716.68ms. Allocated memory was 56.6MB in the beginning and 125.8MB in the end (delta: 69.2MB). Free memory was 31.9MB in the beginning and 45.5MB in the end (delta: -13.5MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2021-08-31 02:45:53,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.47ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 25.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.30ms. Allocated memory is still 56.6MB. Free memory was 25.4MB in the beginning and 23.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.16ms. Allocated memory is still 56.6MB. Free memory was 23.9MB in the beginning and 40.6MB in the end (delta: -16.7MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 201.00ms. Allocated memory is still 56.6MB. Free memory was 40.6MB in the beginning and 32.1MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 15716.68ms. Allocated memory was 56.6MB in the beginning and 125.8MB in the end (delta: 69.2MB). Free memory was 31.9MB in the beginning and 45.5MB in the end (delta: -13.5MB). Peak memory consumption was 55.3MB. 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 16 terminating modules (7 trivial, 6 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function n + -1 * j and consists of 7 locations. One deterministic module has affine ranking function n + -2 * i and consists of 9 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 10 locations. One deterministic module has affine ranking function -2 * i + 5 and consists of 17 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function 5 * i + -2 * j and consists of 6 locations. One nondeterministic module has affine ranking function 3 * i + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 18 locations. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6): de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-31 02:45:53,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:53,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-08-31 02:45:53,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:54,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:54,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-08-31 02:45:54,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...