./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/TerminatorRec02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-numeric/TerminatorRec02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8c9656c5ef8dceb7982043d8db455c38d2f23147 .................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:09:18,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:09:18,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:09:18,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:09:18,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:09:18,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:09:18,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:09:18,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:09:18,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:09:18,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:09:18,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:09:18,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:09:18,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:09:18,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:09:18,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:09:18,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:09:18,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:09:18,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:09:18,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:09:18,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:09:18,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:09:18,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:09:18,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:09:18,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:09:18,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:09:18,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:09:18,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:09:18,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:09:18,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:09:18,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:09:18,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:09:18,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:09:18,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:09:18,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:09:18,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:09:18,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:09:18,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:09:18,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:09:18,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:09:18,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:09:18,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:09:18,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:09:18,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:09:18,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:09:18,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:09:18,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:09:18,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:09:18,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:09:18,109 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:09:18,109 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:09:18,109 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:09:18,109 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:09:18,110 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:09:18,110 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:09:18,110 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:09:18,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:09:18,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:09:18,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:09:18,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:09:18,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:09:18,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:09:18,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:09:18,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:09:18,115 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:09:18,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:09:18,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:09:18,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:09:18,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:09:18,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:09:18,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:09:18,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:09:18,117 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:09:18,118 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9656c5ef8dceb7982043d8db455c38d2f23147 [2021-08-27 14:09:18,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:09:18,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:09:18,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:09:18,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:09:18,350 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:09:18,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2021-08-27 14:09:18,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8608c32/61e72ef6e12143ab8118bcc2d583fb9b/FLAG970a46b85 [2021-08-27 14:09:18,744 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:09:18,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2021-08-27 14:09:18,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8608c32/61e72ef6e12143ab8118bcc2d583fb9b/FLAG970a46b85 [2021-08-27 14:09:18,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8608c32/61e72ef6e12143ab8118bcc2d583fb9b [2021-08-27 14:09:18,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:09:18,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:09:18,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:09:18,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:09:18,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:09:18,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734ddf4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18, skipping insertion in model container [2021-08-27 14:09:18,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:09:18,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:09:18,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:09:18,878 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:09:18,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:09:18,900 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:09:18,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18 WrapperNode [2021-08-27 14:09:18,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:09:18,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:09:18,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:09:18,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:09:18,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:09:18,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:09:18,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:09:18,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:09:18,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:09:18,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:09:18,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:09:18,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:09:18,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (1/1) ... [2021-08-27 14:09:18,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:18,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:18,957 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) [2021-08-27 14:09:18,982 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 [2021-08-27 14:09:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2021-08-27 14:09:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2021-08-27 14:09:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:09:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:09:19,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:09:19,121 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 14:09:19,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:09:19 BoogieIcfgContainer [2021-08-27 14:09:19,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:09:19,123 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:09:19,123 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:09:19,125 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:09:19,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:09:19,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:09:18" (1/3) ... [2021-08-27 14:09:19,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57bea108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:09:19, skipping insertion in model container [2021-08-27 14:09:19,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:09:19,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:18" (2/3) ... [2021-08-27 14:09:19,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57bea108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:09:19, skipping insertion in model container [2021-08-27 14:09:19,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:09:19,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:09:19" (3/3) ... [2021-08-27 14:09:19,128 INFO L389 chiAutomizerObserver]: Analyzing ICFG TerminatorRec02.c [2021-08-27 14:09:19,182 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:09:19,182 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:09:19,182 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:09:19,182 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:09:19,183 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:09:19,183 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:09:19,183 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:09:19,183 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:09:19,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-08-27 14:09:19,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:09:19,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:09:19,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:09:19,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:09:19,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:09:19,210 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:09:19,211 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-08-27 14:09:19,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:09:19,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:09:19,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:09:19,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:09:19,213 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:09:19,217 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~x~0, main_~y~1, main_~z~0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L27true assume !(main_~x~0 < 0);main_~y~1 := main_#t~nondet2;havoc main_#t~nondet2; 6#L30true assume !(main_~y~1 < 0);main_~z~0 := main_#t~nondet3;havoc main_#t~nondet3; 13#L33true call main_#t~ret4 := fact(main_~x~0);< 9#factENTRYtrue [2021-08-27 14:09:19,218 INFO L793 eck$LassoCheckResult]: Loop: 9#factENTRYtrue ~x := #in~x; 15#L18true assume ~x > 1; 10#L19true call #t~ret0 := fact(~x - 1);< 9#factENTRYtrue [2021-08-27 14:09:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:09:19,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 1 times [2021-08-27 14:09:19,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:09:19,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218601803] [2021-08-27 14:09:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:09:19,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:09:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:09:19,281 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:09:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:09:19,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:09:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:09:19,304 INFO L82 PathProgramCache]: Analyzing trace with hash 29909, now seen corresponding path program 1 times [2021-08-27 14:09:19,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:09:19,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344554986] [2021-08-27 14:09:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:09:19,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:09:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:09:19,316 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:09:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:09:19,328 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:09:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:09:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1559568360, now seen corresponding path program 1 times [2021-08-27 14:09:19,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:09:19,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091486760] [2021-08-27 14:09:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:09:19,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:09:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:09:19,344 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:09:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:09:19,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:09:19,464 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:09:19,465 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:09:19,465 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:09:19,465 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:09:19,465 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:09:19,470 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,471 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:09:19,471 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:09:19,471 INFO L133 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2021-08-27 14:09:19,471 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:09:19,471 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:09:19,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:09:19,528 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:09:19,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:19,531 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) [2021-08-27 14:09:19,532 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 [2021-08-27 14:09:19,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:09:19,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:09:19,559 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:09:19,559 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_~y~0=0} Honda state: {fact_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:09:19,581 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 [2021-08-27 14:09:19,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:19,582 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) [2021-08-27 14:09:19,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:09:19,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:09:19,603 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 [2021-08-27 14:09:19,634 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 [2021-08-27 14:09:19,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:19,641 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) [2021-08-27 14:09:19,656 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 [2021-08-27 14:09:19,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:09:19,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:09:19,713 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:09:19,720 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 [2021-08-27 14:09:19,720 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:09:19,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:09:19,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:09:19,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:09:19,721 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:09:19,721 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:09:19,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:09:19,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2021-08-27 14:09:19,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:09:19,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:09:19,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:09:19,789 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:09:19,792 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:09:19,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:19,797 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) [2021-08-27 14:09:19,807 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:09:19,814 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 [2021-08-27 14:09:19,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:09:19,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:09:19,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:09:19,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:09:19,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:09:19,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:09:19,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:09:19,828 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:09:19,844 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 [2021-08-27 14:09:19,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:19,845 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) [2021-08-27 14:09:19,846 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 [2021-08-27 14:09:19,848 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 [2021-08-27 14:09:19,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:09:19,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:09:19,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:09:19,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:09:19,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:09:19,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:09:19,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:09:19,860 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:09:19,877 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 [2021-08-27 14:09:19,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:19,883 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) [2021-08-27 14:09:19,884 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 [2021-08-27 14:09:19,888 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 [2021-08-27 14:09:19,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:09:19,895 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:09:19,895 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:09:19,895 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:09:19,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:09:19,896 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:09:19,897 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:09:19,912 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:09:19,918 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 14:09:19,919 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:09:19,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:09:19,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:09:19,920 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) [2021-08-27 14:09:19,921 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 [2021-08-27 14:09:19,922 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:09:19,922 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:09:19,922 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:09:19,922 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~x) = 1*fact_#in~x Supporting invariants [] [2021-08-27 14:09:19,938 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 [2021-08-27 14:09:19,939 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:09:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:09:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:09:19,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:09:19,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:09:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:09:19,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 14:09:19,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:09:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:09:20,064 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 [2021-08-27 14:09:20,073 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 14:09:20,077 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 [2021-08-27 14:09:20,174 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 32 states and 37 transitions. Complement of second has 12 states. [2021-08-27 14:09:20,175 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 [2021-08-27 14:09:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 14:09:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-08-27 14:09:20,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-27 14:09:20,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:09:20,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 14:09:20,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:09:20,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2021-08-27 14:09:20,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:09:20,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 37 transitions. [2021-08-27 14:09:20,181 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:09:20,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2021-08-27 14:09:20,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:09:20,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:09:20,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:09:20,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:09:20,183 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:09:20,183 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:09:20,184 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:09:20,184 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:09:20,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:09:20,184 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:09:20,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:09:20,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:09:20 BoogieIcfgContainer [2021-08-27 14:09:20,200 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:09:20,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:09:20,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:09:20,201 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:09:20,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:09:19" (3/4) ... [2021-08-27 14:09:20,203 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:09:20,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:09:20,205 INFO L168 Benchmark]: Toolchain (without parser) took 1442.64 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 38.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-08-27 14:09:20,205 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:09:20,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.93 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 38.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-08-27 14:09:20,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.82 ms. Allocated memory is still 54.5 MB. Free memory was 38.6 MB in the beginning and 37.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:09:20,206 INFO L168 Benchmark]: Boogie Preprocessor took 9.93 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 36.4 MB in the end (delta: 889.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:09:20,207 INFO L168 Benchmark]: RCFGBuilder took 190.47 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 27.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:09:20,207 INFO L168 Benchmark]: BuchiAutomizer took 1077.29 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.9 MB in the beginning and 38.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:09:20,207 INFO L168 Benchmark]: Witness Printer took 2.64 ms. Allocated memory is still 67.1 MB. Free memory is still 38.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:09:20,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 138.93 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 38.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.82 ms. Allocated memory is still 54.5 MB. Free memory was 38.6 MB in the beginning and 37.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 9.93 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 36.4 MB in the end (delta: 889.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 190.47 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 27.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1077.29 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.9 MB in the beginning and 38.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 2.64 ms. Allocated memory is still 67.1 MB. Free memory is still 38.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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(x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 2 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 14:09:20,236 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...