./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/afterrec-1.c --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/recursive-simple/afterrec-1.c -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 20d5e20d9a05badce6014033a9e9f921320cf457 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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 04:16:22,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 04:16:22,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 04:16:22,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 04:16:22,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 04:16:22,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 04:16:22,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 04:16:22,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 04:16:22,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 04:16:22,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 04:16:22,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 04:16:22,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 04:16:22,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 04:16:22,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 04:16:22,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 04:16:22,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 04:16:22,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 04:16:22,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 04:16:22,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 04:16:22,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 04:16:22,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 04:16:22,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 04:16:22,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 04:16:22,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 04:16:22,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 04:16:22,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 04:16:22,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 04:16:22,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 04:16:22,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 04:16:22,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 04:16:22,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 04:16:22,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 04:16:22,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 04:16:22,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 04:16:22,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 04:16:22,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 04:16:22,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 04:16:22,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 04:16:22,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 04:16:22,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 04:16:22,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 04:16:22,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-31 04:16:22,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 04:16:22,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 04:16:22,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 04:16:22,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 04:16:22,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 04:16:22,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 04:16:22,116 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 04:16:22,117 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 04:16:22,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-31 04:16:22,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 04:16:22,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 04:16:22,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 04:16:22,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 04:16:22,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 04:16:22,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 04:16:22,119 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 04:16:22,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d5e20d9a05badce6014033a9e9f921320cf457 [2021-08-31 04:16:22,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 04:16:22,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 04:16:22,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 04:16:22,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 04:16:22,338 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 04:16:22,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec-1.c [2021-08-31 04:16:22,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b065bbbe2/da74e9e116bd48ceb849117494581c5b/FLAG481a6c03b [2021-08-31 04:16:22,912 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 04:16:22,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec-1.c [2021-08-31 04:16:22,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b065bbbe2/da74e9e116bd48ceb849117494581c5b/FLAG481a6c03b [2021-08-31 04:16:23,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b065bbbe2/da74e9e116bd48ceb849117494581c5b [2021-08-31 04:16:23,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 04:16:23,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 04:16:23,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 04:16:23,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 04:16:23,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 04:16:23,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a068687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23, skipping insertion in model container [2021-08-31 04:16:23,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 04:16:23,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 04:16:23,434 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/recursive-simple/afterrec-1.c[318,331] [2021-08-31 04:16:23,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 04:16:23,440 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 04:16:23,447 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/recursive-simple/afterrec-1.c[318,331] [2021-08-31 04:16:23,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 04:16:23,464 INFO L208 MainTranslator]: Completed translation [2021-08-31 04:16:23,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23 WrapperNode [2021-08-31 04:16:23,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 04:16:23,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 04:16:23,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 04:16:23,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 04:16:23,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 04:16:23,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 04:16:23,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 04:16:23,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 04:16:23,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 04:16:23,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 04:16:23,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 04:16:23,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 04:16:23,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (1/1) ... [2021-08-31 04:16:23,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:23,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:23,526 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 04:16:23,545 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 04:16:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-31 04:16:23,554 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-31 04:16:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 04:16:23,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 04:16:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-31 04:16:23,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-31 04:16:23,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 04:16:23,654 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-31 04:16:23,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:16:23 BoogieIcfgContainer [2021-08-31 04:16:23,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 04:16:23,657 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 04:16:23,657 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 04:16:23,659 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 04:16:23,659 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 04:16:23,659 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 04:16:23" (1/3) ... [2021-08-31 04:16:23,661 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c5a24f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 04:16:23, skipping insertion in model container [2021-08-31 04:16:23,661 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 04:16:23,661 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:23" (2/3) ... [2021-08-31 04:16:23,661 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c5a24f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 04:16:23, skipping insertion in model container [2021-08-31 04:16:23,661 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 04:16:23,662 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:16:23" (3/3) ... [2021-08-31 04:16:23,662 INFO L389 chiAutomizerObserver]: Analyzing ICFG afterrec-1.c [2021-08-31 04:16:23,695 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 04:16:23,695 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 04:16:23,695 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 04:16:23,695 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 04:16:23,695 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 04:16:23,695 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 04:16:23,696 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 04:16:23,696 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 04:16:23,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-31 04:16:23,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 04:16:23,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 04:16:23,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 04:16:23,728 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-31 04:16:23,728 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 04:16:23,729 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 04:16:23,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-31 04:16:23,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 04:16:23,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 04:16:23,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 04:16:23,731 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-31 04:16:23,732 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 04:16:23,743 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res; 8#L13true call f(4);< 12#fENTRYtrue [2021-08-31 04:16:23,743 INFO L793 eck$LassoCheckResult]: Loop: 12#fENTRYtrue ~n := #in~n; 9#L6true assume !(~n < 3);#t~post7 := ~n;~n := #t~post7 - 1;havoc #t~post7; 13#L8true call f(~n);< 12#fENTRYtrue [2021-08-31 04:16:23,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:23,752 INFO L82 PathProgramCache]: Analyzing trace with hash 38799, now seen corresponding path program 1 times [2021-08-31 04:16:23,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:23,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320803042] [2021-08-31 04:16:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:23,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:23,827 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:23,858 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:23,861 INFO L82 PathProgramCache]: Analyzing trace with hash 29931, now seen corresponding path program 1 times [2021-08-31 04:16:23,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:23,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336451572] [2021-08-31 04:16:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:23,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:23,870 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:23,882 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:23,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1155861149, now seen corresponding path program 1 times [2021-08-31 04:16:23,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:23,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284706864] [2021-08-31 04:16:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:23,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:23,899 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:23,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:24,030 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:24,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:24,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:24,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:24,036 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 04:16:24,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:24,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:24,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2021-08-31 04:16:24,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:24,037 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:24,045 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 04:16:24,061 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 04:16:24,066 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 04:16:24,107 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:24,112 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 04:16:24,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:24,129 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 04:16:24,165 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 04:16:24,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 04:16:24,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:24,188 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 04:16:24,189 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f_#t~post7=0} Honda state: {f_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 04:16:24,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-08-31 04:16:24,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:24,219 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 04:16:24,220 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 04:16:24,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 04:16:24,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:24,266 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 04:16:24,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:24,268 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 04:16:24,269 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 04:16:24,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 04:16:24,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:24,313 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 04:16:24,337 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 04:16:24,337 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:24,337 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:24,337 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:24,337 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:24,337 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 04:16:24,337 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:24,337 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:24,337 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2021-08-31 04:16:24,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:24,338 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:24,338 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 04:16:24,343 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 04:16:24,346 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 04:16:24,377 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:24,380 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 04:16:24,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:24,383 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 04:16:24,383 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 04:16:24,385 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 04:16:24,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:24,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:24,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:24,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:24,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:24,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:24,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:24,411 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 04:16:24,448 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 04:16:24,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:24,449 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 04:16:24,451 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 04:16:24,452 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 04:16:24,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:24,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:24,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:24,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:24,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:24,460 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:24,460 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:24,478 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 04:16:24,496 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 04:16:24,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:24,497 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 04:16:24,515 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 04:16:24,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:24,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:24,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:24,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:24,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:24,523 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:24,523 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:24,528 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 04:16:24,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 04:16:24,540 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 04:16:24,540 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 04:16:24,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:24,551 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 04:16:24,552 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 04:16:24,553 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 04:16:24,553 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 04:16:24,553 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 04:16:24,554 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2021-08-31 04:16:24,570 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 04:16:24,572 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 04:16:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:24,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 04:16:24,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:24,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 04:16:24,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:24,705 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 04:16:24,731 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 04:16:24,732 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:24,807 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 37 states and 39 transitions. Complement of second has 19 states. [2021-08-31 04:16:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 04:16:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2021-08-31 04:16:24,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 3 letters. Loop has 3 letters. [2021-08-31 04:16:24,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:24,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2021-08-31 04:16:24,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:24,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 3 letters. Loop has 6 letters. [2021-08-31 04:16:24,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:24,814 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 39 transitions. [2021-08-31 04:16:24,816 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 04:16:24,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 0 states and 0 transitions. [2021-08-31 04:16:24,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 04:16:24,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 04:16:24,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 04:16:24,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 04:16:24,818 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 04:16:24,818 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 04:16:24,819 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 04:16:24,819 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 04:16:24,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-31 04:16:24,819 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 04:16:24,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-31 04:16:24,821 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 04:16:24,823 INFO L158 Benchmark]: Toolchain (without parser) took 1498.96ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 40.0MB in the beginning and 42.4MB in the end (delta: -2.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-08-31 04:16:24,823 INFO L158 Benchmark]: CDTParser took 11.73ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 04:16:24,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 139.89ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 45.6MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-31 04:16:24,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.97ms. Allocated memory is still 60.8MB. Free memory was 45.4MB in the beginning and 44.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-31 04:16:24,824 INFO L158 Benchmark]: Boogie Preprocessor took 12.05ms. Allocated memory is still 60.8MB. Free memory was 44.0MB in the beginning and 43.2MB in the end (delta: 823.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 04:16:24,825 INFO L158 Benchmark]: RCFGBuilder took 151.89ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 35.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 04:16:24,825 INFO L158 Benchmark]: BuchiAutomizer took 1164.94ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 35.2MB in the beginning and 42.4MB in the end (delta: -7.2MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-08-31 04:16:24,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 11.73ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 42.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 139.89ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 45.6MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.97ms. Allocated memory is still 60.8MB. Free memory was 45.4MB in the beginning and 44.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.05ms. Allocated memory is still 60.8MB. Free memory was 44.0MB in the beginning and 43.2MB in the end (delta: 823.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 151.89ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 35.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1164.94ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 35.2MB in the beginning and 42.4MB in the end (delta: -7.2MB). Peak memory consumption was 14.5MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and 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 04:16:24,848 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 04:16:25,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...