./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 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/nest-if3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6ea3567a534d80cc2c4496700797b4364bacf8f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:45:27,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 02:45:27,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 02:45:27,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 02:45:27,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 02:45:27,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 02:45:27,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 02:45:27,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 02:45:27,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 02:45:27,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 02:45:27,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 02:45:27,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 02:45:27,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 02:45:27,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 02:45:27,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 02:45:27,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 02:45:27,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 02:45:27,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 02:45:27,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 02:45:27,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 02:45:27,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 02:45:27,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 02:45:27,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 02:45:27,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 02:45:27,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 02:45:27,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 02:45:27,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 02:45:27,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 02:45:27,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 02:45:27,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 02:45:27,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 02:45:27,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 02:45:27,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 02:45:27,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 02:45:27,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 02:45:27,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 02:45:27,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 02:45:27,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 02:45:27,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 02:45:27,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 02:45:27,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 02:45:27,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-31 02:45:27,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 02:45:27,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 02:45:27,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 02:45:27,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 02:45:27,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 02:45:27,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 02:45:27,763 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 02:45:27,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 02:45:27,763 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 02:45:27,764 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 02:45:27,764 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 02:45:27,765 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 02:45:27,765 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 02:45:27,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 02:45:27,765 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-31 02:45:27,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 02:45:27,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 02:45:27,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-31 02:45:27,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 02:45:27,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 02:45:27,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 02:45:27,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 02:45:27,772 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-31 02:45:27,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 02:45:27,772 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 02:45:27,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 02:45:27,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 02:45:27,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 02:45:27,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 02:45:27,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 02:45:27,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 02:45:27,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 02:45:27,775 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 02:45:27,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6ea3567a534d80cc2c4496700797b4364bacf8f [2021-08-31 02:45:28,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 02:45:28,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 02:45:28,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 02:45:28,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 02:45:28,111 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 02:45:28,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nest-if3.i [2021-08-31 02:45:28,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9881cbf97/d28ccdba9000446389513056086bfca5/FLAGef186dc62 [2021-08-31 02:45:28,694 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 02:45:28,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i [2021-08-31 02:45:28,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9881cbf97/d28ccdba9000446389513056086bfca5/FLAGef186dc62 [2021-08-31 02:45:29,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9881cbf97/d28ccdba9000446389513056086bfca5 [2021-08-31 02:45:29,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 02:45:29,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 02:45:29,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 02:45:29,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 02:45:29,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 02:45:29,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfb410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29, skipping insertion in model container [2021-08-31 02:45:29,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 02:45:29,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 02:45:29,315 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/nest-if3.i[893,906] [2021-08-31 02:45:29,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 02:45:29,338 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 02:45:29,351 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/nest-if3.i[893,906] [2021-08-31 02:45:29,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 02:45:29,394 INFO L208 MainTranslator]: Completed translation [2021-08-31 02:45:29,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29 WrapperNode [2021-08-31 02:45:29,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 02:45:29,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 02:45:29,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 02:45:29,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 02:45:29,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 02:45:29,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 02:45:29,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 02:45:29,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 02:45:29,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 02:45:29,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 02:45:29,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 02:45:29,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 02:45:29,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (1/1) ... [2021-08-31 02:45:29,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:29,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:29,522 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 02:45:29,548 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 02:45:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-31 02:45:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-31 02:45:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 02:45:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 02:45:29,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 02:45:29,720 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-31 02:45:29,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:45:29 BoogieIcfgContainer [2021-08-31 02:45:29,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 02:45:29,723 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 02:45:29,723 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 02:45:29,726 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 02:45:29,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:45:29,727 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 02:45:29" (1/3) ... [2021-08-31 02:45:29,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@173d3df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 02:45:29, skipping insertion in model container [2021-08-31 02:45:29,729 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:45:29,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:45:29" (2/3) ... [2021-08-31 02:45:29,729 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@173d3df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 02:45:29, skipping insertion in model container [2021-08-31 02:45:29,729 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:45:29,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:45:29" (3/3) ... [2021-08-31 02:45:29,731 INFO L389 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2021-08-31 02:45:29,784 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 02:45:29,785 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 02:45:29,785 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 02:45:29,785 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 02:45:29,785 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 02:45:29,785 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 02:45:29,786 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 02:45:29,786 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 02:45:29,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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 02:45:29,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-08-31 02:45:29,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:29,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:29,829 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-31 02:45:29,830 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 02:45:29,830 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 02:45:29,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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 02:45:29,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-08-31 02:45:29,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:29,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:29,834 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-31 02:45:29,834 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 02:45:29,848 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); 7#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 13#L28true assume !!(main_~l~0 > 0); 6#L29true assume !!(main_~l~0 < 1000000); 5#L30true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 8#L31-3true [2021-08-31 02:45:29,848 INFO L793 eck$LassoCheckResult]: Loop: 8#L31-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 9#L32-2true assume !true; 12#L32-3true assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 14#L31-2true main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 8#L31-3true [2021-08-31 02:45:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2021-08-31 02:45:29,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:29,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443412975] [2021-08-31 02:45:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:29,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:29,958 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:30,011 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:30,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1714106, now seen corresponding path program 1 times [2021-08-31 02:45:30,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:30,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523340680] [2021-08-31 02:45:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:30,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:30,079 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 02:45:30,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:30,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523340680] [2021-08-31 02:45:30,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523340680] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:45:30,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:45:30,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-31 02:45:30,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461199735] [2021-08-31 02:45:30,086 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 02:45:30,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-31 02:45:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-31 02:45:30,128 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:30,196 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2021-08-31 02:45:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-31 02:45:30,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2021-08-31 02:45:30,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-08-31 02:45:30,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 13 transitions. [2021-08-31 02:45:30,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-08-31 02:45:30,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-08-31 02:45:30,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2021-08-31 02:45:30,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 02:45:30,216 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-08-31 02:45:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2021-08-31 02:45:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-31 02:45:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 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 02:45:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-08-31 02:45:30,250 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-08-31 02:45:30,250 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-08-31 02:45:30,250 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 02:45:30,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2021-08-31 02:45:30,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-08-31 02:45:30,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:30,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:30,254 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-31 02:45:30,254 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 02:45:30,254 INFO L791 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 43#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 47#L28 assume !!(main_~l~0 > 0); 48#L29 assume !!(main_~l~0 < 1000000); 44#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 45#L31-3 [2021-08-31 02:45:30,255 INFO L793 eck$LassoCheckResult]: Loop: 45#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 38#L32-2 assume !(main_~i~0 < main_~n~0); 40#L32-3 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 46#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 45#L31-3 [2021-08-31 02:45:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2021-08-31 02:45:30,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:30,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252824131] [2021-08-31 02:45:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:30,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:30,282 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:30,304 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:30,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1699691, now seen corresponding path program 1 times [2021-08-31 02:45:30,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:30,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279963454] [2021-08-31 02:45:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:30,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:30,311 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:30,317 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:30,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1271724179, now seen corresponding path program 1 times [2021-08-31 02:45:30,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:30,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617247456] [2021-08-31 02:45:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:30,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:30,330 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:30,344 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:30,400 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:30,401 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:30,401 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:30,402 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:30,402 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:30,402 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:30,402 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:30,402 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:30,402 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2021-08-31 02:45:30,402 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:30,403 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:30,417 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 02:45:30,422 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 02:45:30,426 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 02:45:30,483 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:30,483 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:30,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:30,489 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 02:45:30,504 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 02:45:30,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:30,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:30,526 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:30,526 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:30,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:30,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:30,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:30,556 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 02:45:30,560 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 02:45:30,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:30,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:30,574 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:30,575 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet7=-1} Honda state: {ULTIMATE.start_main_#t~nondet7=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:45:30,593 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 02:45:30,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:30,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:30,598 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 02:45:30,603 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 02:45:30,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:30,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:30,634 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 02:45:30,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:30,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:30,636 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 02:45:30,649 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 02:45:30,649 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:30,649 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:30,886 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:30,892 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 02:45:30,892 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:30,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:30,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:30,893 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:30,893 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:30,893 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:30,893 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:30,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:30,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2021-08-31 02:45:30,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:30,893 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:30,895 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 02:45:30,897 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 02:45:30,913 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 02:45:30,980 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:30,984 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:30,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:30,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:30,986 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 02:45:30,995 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 02:45:31,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:31,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:31,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:31,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:31,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:31,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:31,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:31,008 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 02:45:31,025 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:31,050 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 02:45:31,051 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,053 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 02:45:31,064 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 02:45:31,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:31,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:31,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:31,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:31,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:31,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:31,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:31,089 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 02:45:31,100 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:31,105 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:31,105 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:31,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,108 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 02:45:31,113 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:31,113 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:31,113 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:31,114 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2021-08-31 02:45:31,113 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 02:45:31,138 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 02:45:31,140 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:31,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:31,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:31,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:31,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:31,290 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 02:45:31,293 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 02:45:31,294 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:31,355 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 24 transitions. Complement of second has 4 states. [2021-08-31 02:45:31,356 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 02:45:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-08-31 02:45:31,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2021-08-31 02:45:31,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:31,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2021-08-31 02:45:31,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:31,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2021-08-31 02:45:31,361 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:31,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2021-08-31 02:45:31,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 02:45:31,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 16 states and 20 transitions. [2021-08-31 02:45:31,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-08-31 02:45:31,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-08-31 02:45:31,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2021-08-31 02:45:31,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:31,363 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-08-31 02:45:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2021-08-31 02:45:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-08-31 02:45:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 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 02:45:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-08-31 02:45:31,367 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-08-31 02:45:31,367 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-08-31 02:45:31,367 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 02:45:31,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2021-08-31 02:45:31,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 02:45:31,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:31,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:31,369 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-31 02:45:31,369 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 02:45:31,370 INFO L791 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 122#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 126#L28 assume !!(main_~l~0 > 0); 127#L29 assume !!(main_~l~0 < 1000000); 123#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 124#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 114#L32-2 [2021-08-31 02:45:31,370 INFO L793 eck$LassoCheckResult]: Loop: 114#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 115#L18 assume !(0 == __VERIFIER_assert_~cond); 119#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 114#L32-2 [2021-08-31 02:45:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2021-08-31 02:45:31,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:31,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961575057] [2021-08-31 02:45:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:31,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:31,385 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:31,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash 62788, now seen corresponding path program 1 times [2021-08-31 02:45:31,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:31,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790109819] [2021-08-31 02:45:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:31,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:31,406 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:31,412 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1271725781, now seen corresponding path program 1 times [2021-08-31 02:45:31,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:31,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312166763] [2021-08-31 02:45:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:31,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:31,445 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:31,453 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 02:45:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:31,476 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:31,556 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:31,556 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:31,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:31,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:31,556 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:31,557 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:31,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:31,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2021-08-31 02:45:31,557 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:31,557 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:31,559 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 02:45:31,562 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 02:45:31,571 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 02:45:31,618 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:31,618 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:31,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,621 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 02:45:31,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:31,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:31,644 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 02:45:31,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:31,655 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 02:45:31,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:31,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,684 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 02:45:31,690 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 02:45:31,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:31,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:31,717 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 02:45:31,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,722 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 02:45:31,725 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 02:45:31,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:31,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:31,789 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:31,792 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 02:45:31,792 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:31,792 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:31,792 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:31,792 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:31,793 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:31,793 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,793 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:31,793 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:31,793 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2021-08-31 02:45:31,793 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:31,793 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:31,794 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 02:45:31,799 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 02:45:31,806 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 02:45:31,841 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:31,842 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:31,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,844 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 02:45:31,856 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 02:45:31,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:31,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:31,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:31,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:31,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:31,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:31,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:31,869 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 02:45:31,880 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:31,908 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 02:45:31,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,910 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 02:45:31,912 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 02:45:31,914 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 02:45:31,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:31,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:31,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:31,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:31,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:31,925 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:31,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:31,927 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:31,949 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:31,949 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:31,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:31,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:31,950 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 02:45:31,951 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 02:45:31,952 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:31,952 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:31,952 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:31,952 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-31 02:45:31,969 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 02:45:31,970 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:32,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:32,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:32,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:32,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:32,078 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 02:45:32,079 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 02:45:32,079 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:32,127 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 02:45:32,143 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 41 transitions. Complement of second has 7 states. [2021-08-31 02:45:32,144 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 02:45:32,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:45:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-08-31 02:45:32,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 3 letters. [2021-08-31 02:45:32,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:32,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2021-08-31 02:45:32,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:32,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 6 letters. [2021-08-31 02:45:32,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:32,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 41 transitions. [2021-08-31 02:45:32,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 02:45:32,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 21 states and 27 transitions. [2021-08-31 02:45:32,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-08-31 02:45:32,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-08-31 02:45:32,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2021-08-31 02:45:32,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:45:32,150 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-08-31 02:45:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2021-08-31 02:45:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-08-31 02:45:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 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 02:45:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-08-31 02:45:32,152 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-08-31 02:45:32,152 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-08-31 02:45:32,152 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 02:45:32,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2021-08-31 02:45:32,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 02:45:32,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:45:32,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:45:32,153 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:45:32,153 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 02:45:32,154 INFO L791 eck$LassoCheckResult]: Stem: 219#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 220#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 224#L28 assume !!(main_~l~0 > 0); 225#L29 assume !!(main_~l~0 < 1000000); 221#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 222#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 214#L32-2 assume !(main_~i~0 < main_~n~0); 216#L32-3 assume !(0 != main_#t~nondet7);havoc main_#t~nondet7; 223#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 226#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 212#L32-2 [2021-08-31 02:45:32,154 INFO L793 eck$LassoCheckResult]: Loop: 212#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 213#L18 assume !(0 == __VERIFIER_assert_~cond); 217#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 212#L32-2 [2021-08-31 02:45:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:32,154 INFO L82 PathProgramCache]: Analyzing trace with hash 768745832, now seen corresponding path program 1 times [2021-08-31 02:45:32,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:32,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778483565] [2021-08-31 02:45:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:32,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:32,164 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:32,175 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:32,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:32,176 INFO L82 PathProgramCache]: Analyzing trace with hash 62788, now seen corresponding path program 2 times [2021-08-31 02:45:32,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:32,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19951498] [2021-08-31 02:45:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:32,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:32,180 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:45:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:45:32,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:45:32,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:32,187 INFO L82 PathProgramCache]: Analyzing trace with hash 941491837, now seen corresponding path program 1 times [2021-08-31 02:45:32,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:45:32,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283847862] [2021-08-31 02:45:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:32,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:45:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:32,228 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 02:45:32,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:45:32,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283847862] [2021-08-31 02:45:32,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283847862] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 02:45:32,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119774685] [2021-08-31 02:45:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:45:32,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 02:45:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:32,231 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 02:45:32,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-31 02:45:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:32,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:32,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:32,339 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 02:45:32,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 02:45:32,384 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 02:45:32,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119774685] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 02:45:32,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 02:45:32,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-08-31 02:45:32,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241159529] [2021-08-31 02:45:32,424 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:32,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:32,424 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:32,424 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:32,425 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:45:32,425 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,426 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:32,426 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:32,427 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2021-08-31 02:45:32,429 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:32,429 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:32,431 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 02:45:32,434 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 02:45:32,439 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 02:45:32,469 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:32,469 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:45:32,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:32,473 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 02:45:32,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:32,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:32,497 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 02:45:32,511 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:45:32,511 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 02:45:32,538 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 02:45:32,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:32,541 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 02:45:32,542 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 02:45:32,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:45:32,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:32,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-08-31 02:45:32,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:32,585 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 02:45:32,586 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 02:45:32,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:45:32,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:45:32,655 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:45:32,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-08-31 02:45:32,659 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:45:32,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:45:32,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:45:32,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:45:32,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:45:32,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:45:32,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:45:32,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2021-08-31 02:45:32,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:45:32,660 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:45:32,661 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 02:45:32,663 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 02:45:32,670 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 02:45:32,708 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:45:32,708 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:45:32,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:32,710 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 02:45:32,711 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 02:45:32,712 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 02:45:32,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:32,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:32,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:32,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:32,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:32,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:32,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:32,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:45:32,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:32,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:32,763 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 02:45:32,770 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 02:45:32,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:45:32,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:45:32,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:45:32,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:45:32,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:45:32,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:45:32,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:45:32,782 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 02:45:32,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:45:32,793 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:45:32,793 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:45:32,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:45:32,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:45:32,795 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 02:45:32,796 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 02:45:32,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:45:32,797 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:45:32,797 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:45:32,797 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 02:45:32,818 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 02:45:32,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:45:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:32,860 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 02:45:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:32,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:32,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:32,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:32,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:32,919 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 02:45:32,921 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 02:45:32,922 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:45:32,955 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 26 states and 33 transitions. Complement of second has 7 states. [2021-08-31 02:45:32,956 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 02:45:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:45:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-08-31 02:45:32,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-31 02:45:32,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:32,959 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:32,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:32,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:33,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:33,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:33,025 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 02:45:33,026 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 02:45:33,026 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:45:33,057 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 26 states and 33 transitions. Complement of second has 7 states. [2021-08-31 02:45:33,057 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 02:45:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:45:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-08-31 02:45:33,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-31 02:45:33,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:33,061 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 02:45:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:45:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:33,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:45:33,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:45:33,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:45:33,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:45:33,130 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 02:45:33,131 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 02:45:33,132 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:45:33,168 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 23 states and 28 transitions. Complement of second has 6 states. [2021-08-31 02:45:33,169 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 02:45:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:45:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-08-31 02:45:33,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-31 02:45:33,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:33,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 3 letters. [2021-08-31 02:45:33,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:33,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 6 letters. [2021-08-31 02:45:33,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:45:33,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2021-08-31 02:45:33,172 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 02:45:33,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2021-08-31 02:45:33,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 02:45:33,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 02:45:33,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 02:45:33,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 02:45:33,173 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:33,173 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:33,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:45:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-31 02:45:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-31 02:45:33,174 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 02:45:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:45:33,174 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-31 02:45:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-31 02:45:33,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-31 02:45:33,175 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 02:45:33,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-31 02:45:33,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 02:45:33,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 02:45:33,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 02:45:33,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 02:45:33,176 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:33,176 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:33,176 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 02:45:33,176 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-31 02:45:33,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-31 02:45:33,176 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 02:45:33,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-31 02:45:33,179 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 02:45:33,183 INFO L158 Benchmark]: Toolchain (without parser) took 4011.81ms. Allocated memory was 48.2MB in the beginning and 71.3MB in the end (delta: 23.1MB). Free memory was 25.7MB in the beginning and 30.6MB in the end (delta: -4.9MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2021-08-31 02:45:33,183 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 02:45:33,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.83ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 25.5MB in the beginning and 43.3MB in the end (delta: -17.7MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-08-31 02:45:33,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.77ms. Allocated memory is still 58.7MB. Free memory was 43.1MB in the beginning and 41.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-31 02:45:33,184 INFO L158 Benchmark]: Boogie Preprocessor took 29.43ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.6MB in the end (delta: 950.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 02:45:33,185 INFO L158 Benchmark]: RCFGBuilder took 243.57ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 32.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 02:45:33,185 INFO L158 Benchmark]: BuchiAutomizer took 3458.51ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.3MB in the beginning and 30.6MB in the end (delta: 1.7MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2021-08-31 02:45:33,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.83ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 25.5MB in the beginning and 43.3MB in the end (delta: -17.7MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.77ms. Allocated memory is still 58.7MB. Free memory was 43.1MB in the beginning and 41.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.43ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.6MB in the end (delta: 950.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.57ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 32.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3458.51ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.3MB in the beginning and 30.6MB in the end (delta: 1.7MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * i and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 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 02:45:33,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-31 02:45:33,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...